Can you guys help me with this math questions

Can You Guys Help Me With This Math Questions

Answers

Answer 1

Answer:

2)  $40 per shirt

3)  80/9 m = 8.9 m (nearest tenth)

Step-by-step explanation:

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Question 2

Given information:

Previous sales = 300 shirts at $20 eachFor every $1 increase in price, the number of sales diminishes by 5

Let [tex]x[/tex] = number of $1 increases

Let [tex]y[/tex] = total revenue (in dollars)

From the given information:

Price change of shirt:  [tex](20 + x)[/tex]Number of sales change:  [tex](300 - 5x)[/tex]

Therefore, we can create a quadratic equation with the given information:

[tex]\implies y = (20+x)(300-5x)[/tex]

As we need to find the maximum amount of revenue, we need to find the vertex of [tex]y[/tex].  As the equation is already factored, the quickest way to do this is to the find the mid-point of the zeros (since a quadratic curve is symmetrical).

[tex]\begin{aligned}y & =0\\\implies (20+x)(300-5x) & =0\\\implies (20+x) & =0 \implies x=-20\\\implies (300-5x) & = 0 \implies x=60\end{aligned}[/tex]

[tex]\textsf{Midpoint}=\dfrac{-20+60}{2}=20[/tex]

Therefore, Sammy should have 20 $1 increases to maximize the revenue, so the new price will be:

[tex]\implies \$20 + 20 \times \$1 = \$40\: \sf per\:shirt[/tex]

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Question 3

Given information:

Bridge is modeled as a parabolaWidth of bridge = 30 mMax height of bridge = 10 m high (in the middle)

As the bridge is modeled as a parabola, and we have been given the width and height, we can create a quadratic equation using the vertex form.

Vertex form:  [tex]y=a(x-h)^2+k[/tex]

where:

x is the horizontal distance of the bridgey is the height of the bridge(h, k) is the vertexa is some constant

Middle of the bridge = 30 m ÷ 2 = 15 m

Max height of the bridge = 10 m

Therefore, the vertex of the parabola is (15, 10)

[tex]\implies y=a(x-15)^2+10[/tex]

We know that when [tex]x = 0, y = 0[/tex].  Therefore, substitute these values into the equation and solve for a:

[tex]\implies 0=a(0-15)^2+10[/tex]

[tex]\implies 0=225a+10[/tex]

[tex]\implies 225a=-10[/tex]

[tex]\implies a=-\dfrac{10}{225}[/tex]

[tex]\implies a=-\dfrac{2}{45}[/tex]

Therefore, the equation of the parabola is:

[tex]\implies y=-\dfrac{2}{45}(x-15)^2+10 \quad \quad \textsf{for }0\leq x\leq 30[/tex]

The horizontal distance at 5 m right of the middle is:

[tex]\implies \dfrac{30}{2}+5=20\:\sf m[/tex]

Therefore, to find the height at this point, input [tex]x=20[/tex] into the equation and solve for y:

[tex]\implies -\dfrac{2}{45}(20-15)^2+10=\dfrac{80}{9}\:\sf m[/tex]

Therefore, the height of the bridge at 5 m to the right of the middle is:

[tex]\dfrac{80}{9}\:=8.9\: \sf m\:(nearest\:tenth)[/tex]


Related Questions

Q38: Rearrange g=2hm to make m
the subject

Answers

The expression g = 2hm can be written as in terms of g and h when m is the subject is m = g/2h.

What is an expression?

It is defined as the combination of constants and variables with mathematical operators.

We have an expression:

g  = 2hm

To make m as the subject and solve it:

Divide the above expression by 2h on both sides:

g/2h = m  or

m = g/2h

Thus, the expression g = 2hm can be written as in terms of g and h when m is the subject is m = g/2h.

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What is the volume, in cubic centimeters, of a right square pyramid
with base edges that are 64 cm long and a slant height of 40 cm

Answers

The volume of the right squared pyramid with the given base edges and slant height is 32768 cubic centimeters.

What is the volume of right square pyramid?

The volume of a square pyramid is expressed as;

V = (1/3)a²h

Where a is the base length and h is the height of the pyramid

Given that;

Base edges of the square base a = 64cmSlant height s = 40cmHeight of the pyramid h = ?Volume = ?

First, we determine the height of the pyramid using Pythagorean theorem.

c² = a² + b²

c = s = 40cma = half of the base length = a/2 = 64cm/2 = 32cmb = h

(40cm) = (32cm)² + h²

1600cm² = 1024cm² + h²

h² = 1600cm² - 1024cm²

h² = 576cm²

h = √576cm²

h = 24cm

Now, we calculate the volume of the right square pyramid;

V = (1/3)a²h

V = (1/3) × (64cm)² × 24cm

V = (1/3) × 409664cm² × 24cm

V = 32768cm³

Therefore, the volume of the right squared pyramid with the given base edges and slant height is 32768 cubic centimeters.

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Solve for x. Each figure is a trapezoid. # 18 has a midsegment.
13)

Answers

Question 13

[tex]{12x+2}=\frac{18+34}{2}\\\\12x+2=26\\\\12x=24\\\\x=\boxed{2}[/tex]

Question 14

Base angles of an isosceles trapezoid are congruent, so:

[tex]73x+1=74\\73x=73\\x=\boxed{1}[/tex]

Graph the function f(x)= 2x -4

Answers

The y intercept and -4 and going down 2 and 1 right u til you reach the end of the graph

What Fraction shows the product of 2×3/5

Answers

Answer:

Improper fraction

Step-by-step explanation:

2×3/5

=6/5 i.e Improper fraction

please help me find answer for this question

Answers

Answer:

The answer with 4 cubes 2x2

Step-by-step explanation:

D it has 5 cubs in all,if you see A,B,C,they do not have cuds

its so hard can you guys help

Answers

Answer:

1593 pandas 13 years ago.

Difference? ≈271 pandas

Keyword:

"Increase"

Step-by-step explanation:

Use the equation:

x + (x × P%) = y

x(1 + P%) = y

x = 1864/(1 + 17%)

x = 1864/(1 + 0.17(17%))

x = 1864/1.17

x = 1593.1624 ≈ 1593

Aleka earns her regular pay or $14 per hour for up to 40 hours of work per week. For each hour over 40 hours of work per week, Aleka earns 14 times her regular pay. How much does Aleka earn in a week in which she works 48 hours?

a. $576
b. $672
c. $728
d. $744
e. 1008

Answers

C. 728

14x40=560
14+7=21
21x8=168
560+168=728

If Aleka earns her regular pay or $14 per hour for up to 40 hours of work per week. For each hour over 40 hours of work per week, Aleka earns 14 times her regular pay. Then $728 she earns in a week in which she works 48 hours

What is equation?

Two or more expressions with an equal sign is called as Equation.

Given that Aleka earns her regular pay or $14 per hour for up to 40 hours of work per week.

14x40=560

For each hour over 40 hours of work per week, Aleka earns 14 times her regular pay.

Fourteen plus seven equal to twenty one

14+7=21

Twenty one times of eight is equal to one hundred sixty eight

21x8=168

Now let us add five hundred sixty and one hundred sixty eight

560+168=728

Hence she earns $728 in a week in which she works 48 hours.

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Which type of data would be best displayed in a dot plot. (Help fast)

Answers

The type of data that would be best displayed in a dot plot is the correspondent to the third option.

Which type of data would be best displayed in a dot plot?

A dot plot is a plot where in the horizontal axis different numbers or properties (discrete set, usually we want smaller ranges, just so the graph are easier to read.) are marked, and above these, we mark dots, that represents how many times these are repeated on the data set.

We don't want large ranges (like in the first option 725 to 2450) because it means that we need to mark 725 points, or we need to find a common factor so each point represents more than one unit.

So, we need to have discrete data and with ranges not to large. The only option that meets both conditions is the third one, where on the horizontal axis we would have each of the 15 school dental clinics, and the dots would represent the number of dentist volunteering on each of them.

Then the correct option is the third one.

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Answer:

3rd option

Step-by-step explanation:

which sequence of transformations could be used to move triangle RST so it completely covers triangle R”S”T?

Answers

Triangle RST is reflected across the x-axis and translated 5 units to the left to form triangle R"S"T"

What is transformation?

Transformation is the movement of a point from its initial location to a new location. Types of transformation are reflection, translation, rotation and dilation.

Triangle RST is reflected across the x-axis and translated 5 units to the left to form triangle R"S"T"

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~30 PTS, BRAINLIEST, AND 5 STARS TO BEST ANSWER!~

1.) Find the coordinates of P so that P partitions segment AB in the part-to-whole ratio of 1 to 5 with A(-9, 3) and B(1, 8).

2.)Find point Z that partitions the directed line segment XY in the ratio of 2:1 where X(1, 2) and Y(7, 5).

(PLS PROVIDE A DETAILED RESPONSE, ALONG WITH AN EASY
STEP BY STEP PROCESS. TY!)

Answers

For both problems, we can use the section formula.

1) [tex]P=\left(\frac{(1)(1)+(5)(-9)}{6}, \frac{(1)(8)+(5)(3)}{6} \right)=\boxed{\left(-\frac{22}{3}, \frac{23}{6} \right)}[/tex]

2) [tex]Z=\left(\frac{(2)(7)+(1)(1)}{3}, \frac{((2)(5)+(1)(2)}{3} \right)=\boxed{(5, 4)}[/tex]

The rectangle is 93 m long and 70 m wide what is the area if you use 3.14 for pie

Answers

Answer:

i might just be mind numb right now but you don't use pie on rectangles for area

Area = 6510

Step-by-step explanation:

A = L x W

A = 93 x 70

A = 6510

When a die is rolled, what is the theoretical probability that number five will be rolled?

Answers

Answer: 1/6

Step-by-step explanation: there is 6 faces on a standard die, one of them is 5.

Find the area of each triangle. Round to the nearest tenth.

Answers

Answer:

A ≈ 9.6 units²

Step-by-step explanation:

the area (A) of the triangle is calculated as

A = product of 2 sides × sin (angle between them ) , that is

A = 3 × 5 × sin40° = 15 × sin40° ≈ 9.6 units² ( to the nearest tenth )

work out the value of T using the formula T=3x^{2]p-2p when p= -1?

Answers

The solution of the equation when p = -1 is [tex]T=3x^{-2}[/tex]

How to determine the value of the equation?

The equation is given as:

[tex]T=3x^{2p}[/tex]

The value of p is -1.

So, we have:

[tex]T=3x^{2*-1}[/tex]

Evaluate the product

[tex]T=3x^{-2}[/tex]

Hence, the solution of the equation when p = -1 is [tex]T=3x^{-2}[/tex]

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Brian usually brushes his teeth in the morning, but 10% of the time he forgets. What is the probability that he will forget to brush his teeth three days in a row (Assume that forgetting one day does not influence any other day.)

Answers

Using it's concept, it is found that there is a 0.001 = 0.1% probability that he will forget to brush his teeth three days in a row.

What is a probability?

A probability is given by the number of desired outcomes divided by the number of total outcomes.

In this problem, for each day, there is a 0.1 probability that he forgers to brush his teeth, and days are independent, hence for 3 consecutive days the probability is given by:

p = (0.1)³ = 0.001.

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the product of two numbers is 16/9. if one of the numbers is 5/2, find the other number

Answers

Answer:

[tex] \frac{32}{45} [/tex]

Step-by-step explanation:

if the multiplication of two numbers is 16)9, and one of the numbers is 5/2. then the other number can be found by dividing the number from the product to get the other number.

Find the range.
3 -9 7 -1 5 -4 2

Answers

Answer:

16

Step-by-step explanation:

The range is the distance between the largest number and the smallest number. To find the range, you take the smallest number and subtract it from the largest number. In this case, the smallest number is -9 and the largest number is 7. 7 minus -9 is a double negative, so you can also do 7+9=16. 16 is the range.

The inverse of a quadratic parent function with a limited domain is a
function.
A. negative
B. cubed
C. square root
D. hyperbolic

Answers

The inverse of a quadratic parent function with a limited domain is given by the square root function, hence option C is correct.

How to find the inverse of a function?

Supposing we have a function y = f(x), to find the inverse, we exchange x and y, and isolate y.

The quadratic function is:

[tex]y = x²[/tex]

Exchanging and isolating y:

[tex]x = y^2[/tex]

[tex]y^2 = x[/tex]

[tex]y = \sqrt{x}[/tex]

[tex]f^{-1}(x) = \sqrt{x}[/tex]

Hence option C is correct.

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A patch of farmland is currently worth $78,125. The expected increase in its market value can be modeled by the function below, where t is the time in years. How many years will it take for the farmland's market value to reach $125,000?

Answers

The number of the years to take for the farmland's market value to reach $125,000 will be 19 years.

The missing function will be given below.

[tex]\rm p(t) = 78,125\ e^{0.025t}[/tex]

What is an exponent?

Let a is the base and x is the power of the exponent function and b is the y-intercept. The exponent is given as

y = aˣ

A patch of farmland is currently worth $78,125. The expected increase in its market value can be modeled by the function below.

[tex]\rm p(t) = 78,125\ e^{0.025t}[/tex]

Then the number of the years to take for the farmland's market value to reach $125,000 will be

[tex]\rm 78,125 \ e^{0.025t} = 125,000\\\\e^{0.025t} = 1.6[/tex]

Then take log on both sides, then we have

0.025t lne = ln 1.6

     0.025t = 0.47

               t = 18.8

               t = 19 years

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What is the value of x?

Answers

Answer:

46 degrees

Step-by-step explanation:

Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).

The shaded region in the graph represents the solutions of this system of linear inequalities:

y ___

4x + ___

y ≤ ___

x + ___


Note: Use the symbols <, >, <=, and >= for inequality signs.

Answers

Based on the calculations, the solutions of this system of linear inequalities are equal to:

y < 4x + 5y ≤ 2x + 3

What is an inequality?

An inequality simply refers to a mathematical relation that's used to compare two (2) or more integers (variables) in an equation based on any of the following:

Greater than (>).Less than (<).Greater than or equal to (≥).Less than or equal to (≤).

In order to determine the solutions of this system of linear inequalities, we would find the slope of each line.

For line A, we have:

Slope, m = (11 - 3)/(4 - 0) = 8/4

Slope, m = 2.

Mathematically, the standard equation of a line is given by y = mx + b.

y = 2x + 3

y ≤ 2x + 3.

For line B, the slope is equal to 4. Also, the y-intercept from the graph is equal to 5.

Therefore, the standard equation of a line is given by:

y = 4x + 5

y < 4x + 5

In conclusion, the solutions of this system of linear inequalities are equal to:

y < 4x + 5y ≤ 2x + 3

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Find the inverse equations for f and g.f(x)=3x+5g(x)=x2−6Explain your process. Then write about the relationship between the functions and their inverses. Does the domain and range of all functions and inverses follow a pattern?View keyboard shortcuts

Answers

[tex]g = \frac{x}{5} - \frac{6}{5x} - \frac{3}{5} [/tex]

Step-by-step explanation:

[tex]3 + 5g = \frac{ {x}^{2} - 6 }{x} \\ 5g = x - \frac{6}{x} - 3 \\ g = x - \frac{ \frac{6}{x} - 3}{5} \\ g = \frac{x}{5} - \frac{ \frac{6}{x} }{5} - \frac{3}{5} [/tex]

Solve for x. Round to nearest tenth

SOMEONE PLEASE HELP ME WITH THIS ILL GIVE YOU BRAINLIST ANSWER
Image above

Answers

Answer: the answer to your question is 42.2

Step-by-step explanation:25 x 25 + 34 X 34 = c^2

Answer:

20

Step-by-step explanation:

34 + 90 = 124

180-124 = 56 degrees

c = 56 degrees

to find x we need to use sin

sin = SOH (Sin = opposite/hypotenuse

sin 56 = x/25

sin 56 x 25 = x

x = 20.72593931

x = 20 (rounded to the nearest 10th)

hope this helped :)

Consider the equation -5\cdot e^{10t}=-30−5⋅e
10t
=−30minus, 5, dot, e, start superscript, 10, t, end superscript, equals, minus, 30.
Solve the equation for ttt. Express the solution as a logarithm in base-eee.
t=
Approximate the value of ttt. Round your answer to the nearest thousandth.
t=

Answers

The approximate equation is n = (ln 6)/10 and approximate value is n = 0.179.

What is Exponential equation?

In mathematics, an exponential function is a function of form f (x) = aˣ, where “x” is a variable and “a” is a constant which is called the base of the function and it should be greater than 0.

Here, given equation; (we are using n in place of t)

          -5.e¹⁰ⁿ = -30

      On dividing -5 both sides, we get

           -5.e¹⁰ⁿ/-5 = -30/-5

                e¹⁰ⁿ  = 6

 Taking 'ln' on both side, we get

             10n = ln 6

              n = (ln 6)/10

              n = 1.791759/10

              n = 0.179

Thus, the approximate equation is n = (ln 6)/10 and approximate value is n = 0.179.

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Simplify
x² - 7x - 30
x² + 5x + 6

Answers

Answer:

(X+3)(x-10)

(X+3)(X+2)

can you help me figure of the value of y?and possible x (I think I got it)​

Answers

The values of x and y from the figure are 22.5 and 10 respectively

Vertical angles

The angles that meet at a point X are equal and vertically opposite

From the diagram shown

6x - 5 = 8x - 50

6x - 8x = -50 +  5

-2x = -45

x = 22.5

Similarly

2y + 30 = 3y + 20

2y - 3y = 20 - 30

-y = -10

y = 10

Hence the values of x and y from the figure are 22.5 and 10 respectively

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[tex] {\qquad\qquad\huge\underline{{\sf Answer}}} [/tex]

Let's solve ~

Since the two lines intersects each other we can conclude that :

6x - 5 = 8x - 50

and

2y + 30 = 3y + 20

[ That's because they form vertical opposite angle pair ]

So, let's solve for x and y ~

[tex]\qquad \sf  \dashrightarrow \:6x - 5 = 8x - 50[/tex]

[tex]\qquad \sf  \dashrightarrow \:8x - 6x = - 5 + 50[/tex]

[tex]\qquad \sf  \dashrightarrow \:2x = 45[/tex]

[tex]\qquad \sf  \dashrightarrow \:x = \dfrac{45}{2} [/tex]

[tex]\qquad \sf  \dashrightarrow \:x = 22.5[/tex]

And

[tex]\qquad \sf  \dashrightarrow \:2y + 30 = 3y + 20[/tex]

[tex]\qquad \sf  \dashrightarrow \:3y - 2y = 30 - 20[/tex]

[tex]\qquad \sf  \dashrightarrow \:y = 10[/tex]

I hope the steps are clear ~ let me know if you have doubts ~

Solve: log8 (x - 4) = 2

Answers

Answer:

x = 68

Explanation:

⇒ log₈(x - 4) = 2

apply log rules: logₐN = x then N = aˣ

⇒ (x - 4) = 8²

simplify

⇒ x - 4 = 64

add 4 on both sides

⇒ x = 64 + 4

add the integers

⇒ x = 68

Answer:

x = 68

Step-by-step explanation:

Given equation:

[tex] \rm log_{8}(x - 4) = 2[/tex]

To Find:

Value of x

Solution:

Rewrite the equation in exponential form which is equivalent to b^y = x.

[tex] \implies {8}^{2} = x - 4[/tex]

Now find the value of x.

[tex] \implies \:64 = x - 4[/tex]

Transpose 4 from RHS to LHS, make sure to change its sign from (-) to (+) .

[tex] \implies \: 64 + 4 = x[/tex]

Overturn the equation

[tex] \implies \: x = 68[/tex]

Thus, value of x is 68.

Find the quotient.

48a3bc2 ÷ 3abc

16 ac2
16 a2c
18 a2c
16 a4b2c 3

Answers

The quotient when 48a³bc²is divided by 3abc will be 16a²c.

How to explain the quotient?

The information given is that we should find the quotient of 48a³bc² ÷ 3abc.

This can be expressed as:

48a³bc² ÷ 3abc = (3 × 16 × a³ × b × c²) / (3 × a × b × c)

= 16a²c

In this case, the quotient when 48a³bc²is divided by 3abc will be 16a²c.

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What is the factored form of 4x2 23x – 72? (4x 8)(x – 9) (4x – 8)(x 9) (4x 9)(x – 8) (4x – 9)(x 8)

Answers

Answer:

(x+8)(4x-9)

Step-by-step explanation:

Rewrite expression 4x^2 + 32x - 9x - 72

Factor out 4x  4x(x+8) - 9x - 72

Factor out x+8  4x(x+8) - 9(x+8)

Simplify (x+8)(4x-9)

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