How many, and what type of solutions do the follow
quadratic equations have?
2x2 – 3x – 7 = 36

Answers

Answer 1

Answer:

2 real solutions

Step-by-step explanation:

Determinant of a quadratic equation: [tex]b^2-4ac=(-3)^2-4\times2\times(-7-36)=353.[/tex]

Since the determinant is larger than 0, it has 2 real solutions.


Related Questions

Write rational numbers between 0 and 1
-----------------------------------------------------------------------------------------
please also say how did you solve it
this question has 20 points
I will mark you as Brillant if you answer it

Answers

Step-by-step explanation:

0/1,1/1

Multiply it by any number

0/1×30=0/30

1/1×30=30/30

Now we have many choices

2/30,5/30,20/30,15/30.....so...on

to reflect point R(6, 10) over the y-axis. What are the coordinates for R’?

Answers

Answer:

-6, 10

Step-by-step explanation:

When you reflect of the y-axis the x will be negative if the original point was positive and the y will stay the same

Solve 7x- c = k for x

Answers

Answer:

D

Step-by-step explanation:

I know the answer is D because I set the equation to be equal to x.

First, I added c to both sides. The equation looked like: 7x=k+c

Then, I divided 7 on both sides, so x would be by itself. The equation looked like x=k+c/7

In conclusion, the answer is D. x=k+c/7

Solve the following equation:

l -4 l x 5= x

x =

Answers

X = 20 because the Absolute value of -four is 4×5 is 20

show how you got your answer

Answers

5,200
make km to m. km to m is 1,000
so 5.2 x 1,000

Find the missing angle in the triangle,

36°
111°

Answers

Answer:

33°

Step-by-step explanation:

you add the two numbers together and subtract from 180° to get your answer

PLEASE HELP BOTS HAVE BEEN COMMENTING ON MY POSTS ALL DAY I NEED AN REAL ANSWER PLEASE IM DEPERATE

Answers

Yep the same thing happens to me

Tara has 4 and 4 over 5 feet of rope.

Part A: How many 2 over 5 foot pieces can Tara cut from the 4 and 4 over 5 feet of rope? Show your work. (5 points)

Part B: Using the information in Part A, interpret the meaning of the quotient in terms of the two fractions given. (5 points)
I already got part a correct but I need help with part b, I don't understand it cause I'm d u m b pls help

Answers

9514 1404 393

Answer:

  A) 12 pieces

  B) the meaning of the quotient is that Tara got 12 pieces of length 2/5 ft from her 4 4/5 ft rope

Step-by-step explanation:

A) (4 4/5)/(2/5) = (24/5)/(2/5) = 24/2 = 12

  Tara can cut 12 pieces from the rope.

__

B) The quotient is the answer to the question. The meaning of it is that Tara can get 12 pieces from the rope, in answer to the question, "how many pieces can Tara cut?"

It doesn't matter whether the numbers are whole numbers, decimals, fractions, or even irrational numbers. The whole is the sum of the parts, so the number of parts is equal to the size of the whole divided by the size of a part.

_____

Comment on the question

This sort of question seems to appear a lot in modern "common core" math materials. They tell you "x means <such and such>", and then they ask you, "What is the meaning of x?" It seems to be a reading comprehension exercise. Of course, the meaning of x is <such and such>, just as the problem statement tells you.

A muralist is painting the side wall of a building. The wall is shaped like a rectangle that is 60
feet long and has a diagonal length of 68 feet. If a gallon of paint can cover 800 square feet,
how many gallons will the muralist use?

Answers

Answer:

2.4 gallons

Step-by-step explanation:

to answer this question :

we have to determine the width of the rectangle.

determine the area

determine the gallons needed

Pythagoras theorem would be used to determine the width of the wall

The Pythagoras theorem : a² + b² = c²

where a = length

b = base

c = hypotenuse

60² + b² = 68²

3600 + b² = 4624

b = ²4624 - 3600 = 1024

√b = 32

Area of a rectangle = length x width

32 x 60 = 1920

Gallons needed = 1920 / 800 = 2.4 gallons

01:09:23
What is the radius of this circle if the circumference is 18 cm?
0
3 cm
9 cm
18 cm
36 cm

Answers

Answer:

The formula for circumference of a circle is

2pi,R.

In which R= radius. Then we Insert 18 in for the circumstances.

so, 18=2πr

then solving for r

18=2

÷. ÷

2. 2

R = 9,,


PLEASE HELP !! ILL GIVE BRAINLIEST !!

Answers

The answer is x=-6 and the angles are 56
-8x+8=-6x+20
-2x=12
x=-6

Last year Jacob’s total sales were $512,045. This year he increased his sales to $595,679. What is the increase in sales

Answers

Answer:

$83,634

Step-by-step explanation:

The computation of the increase in sales is shown below:

Given that

The total sales is $512,045

And, the increase his sales to $595,679

So based on the above information

The increase in sales is

= $595,679 - $512,045

= $83,634

Hence, the increase in sales is $83,634 that means the sales would be increased by $83,634

The same should be considered and relevant

how much does a bike with an acceleration of 2ms^-2 take to increase it's velocity from 10ms^-1 to 30ms^-1? help!! with explainations and show the work, if possible. thank you!​

Answers

Step-by-step explanation:

use the formula:

[tex]v = u + at[/tex]

v = 30 [final velocity]

u = 10 [initial velocity]

a = 2 [acceleration]

solve for t [time]

Can someone help me with this please ?

Answers

Answer:

x= 65

Step-by-step explanation:

x= 360- (130+75+90)

x= 360- 295

x= 65 degrees

Please help I will give brainliest!

Answers

Answer:

1.    74.6° = m∠C       65.4° = m∠A      a = 2.83

2.   Triangle does not exist

Step-by-step explanation:

1.   Use the law of sines to find m∠C

sin 40/2 = sin C/3

3sin 40/2 = sin C = .96418...

arcsin .96418... = 74.6° = m∠C

m∠A = 180 - 40 - 74.6 = 65.4°

a/sin 65.4 = 2/sin 40

a = 2 sin 65.4/sin 40 = 2.83

2.   sin 95/4 = sin C/5

5sin 95/4 = sin C =  1.2452...  which is impossible since the cosine of an angle is ≤ 1

Help I don’t know what to do

Answers

Answer:

x=8

Angle DBC=32

Step-by-step explanation:

-DBC= ABC-ABD= 55-23=32

-4x=DBC=32

x=32/4=8

..................................... help pls

Answers

Answer:

A

Step-by-step explanation:

A is the height since it shows the dotted line from top to bottom and B and C are slanted.

Answer:

Option A

Is correspond line

Use long division to find the quotient of 1,467 and 58. What is the remainder?

Answers

Answer:

1467 divided by 58 equals

25 with a remainder of 17

Step-by-step explanation:

Answer:

17

Step-by-step explanation:

A triangle has two sides with lengths 7 m and 12 m. Which of the following lengths could represent the length of the third side? *
1 point
4 m
19 m
17 m
2 m

Answers

Answer:

i think its 17

please rate and leave a like :-)

Which ordered pair represents a solution? *

A (0,2)
B (1,3)
C (3,1)
D (26)

Answers

I think it’s A hope that helped
A is the correct answer

Kayli made 4 cups of soup for dinner. She ate 14 cups and her sister ate 11 cups. How much soup was left?​

Answers

Answer:

-21 cups.

Step-by-step explanation:

4-14-11=-21

Which equation represents 3/8 less than 7/8 of a number?

A. 3/8 -7/8n

B. 3/8n - 7/8

C. 7/8n-3/8

D. (7/8-3/8)n

Answers

The answer is D
Am sure its D

A baker uses 5 cups of flour to make 75 cookies. Using this same ratio, how many cups of flour will be needed for 45 cookies? Use the ratio table given to solve the problem.

Answers

Answer:

Since, the baker use 5cups for 75cookies.Then for 30 cookies number of cups=

=75/5

=15.

Therefore no. 1cups for 15cookies.so,for 30 cookies=

=15*2

=30.

So, 2cups are needed for 30cookies

2) What is the area of the figure?

Answers

Answer:

9+7+4+5= 25

Step-by-step explanation:

add up everything then get ur answer

PLEASE HELP !! ILL GIVE BRAINLIEST !!

Answers

Answer:

ang(HIK) AND ang(GFD)

HIK GFD is the answer they are parallel

BRAINLIEST FOR CORRECT ANSWER ASAP

Answers

Answer:

● equivalent

Step-by-step explanation:

equivalent

Answer:

the base is the answer 4

[tex] {42}^{2} [/tex]

Step-by-step explanation:

42 is the base

album sells for 7 percent sales tax and 10 percent off what is the total price including tax

Answers

Answer:

Are you trying to find the price before the discount and tax?

Step-by-step explanation:

Also, what album are you buying? Lol

P.S. I'll change my answer when I understand.

Answer:

You didn’t give us the price of the album, but multiply it by 0.1 then subtract that form the original price then multiply that number you got by 0.07 and that on to the number you got from the number after the 10% discount

Step-by-step explanation:

Find the value of x in the triangle shown below.

a.164
b.2
c.6
d.80

Answers

Answer:

C. 6

Step-by-step explanation:

According to Pythagprean theorem 10^2 = x^2 +8^2

100 = x^2+ 64 subtract 64 from both sides

36 = x^2

6 = x

Help help help help help help

Answers

Answer:

More than for the first box and less than for the second.

Find the mean for the data set. 1600, 1800, 1205, 1360, 1205, 1135, 1895, 1400, 1955, 1710

Answers

Answer:

1526.5

Step-by-step explanation:

To find the mean...

Add all of the numbers and then divide by how many numbers there are.

1600+1800+1205+1360+1205+1135+1895+1400+1955+1710 = 15265

15265/10 = 1526.5

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