Use the substitution method to solve the system of equations. Choose th correct ordered pair. y = 8x - 4 x = 4 A. (2. 12) OB. (4, 28) C. (4, 4) D. (2.4)
Answers
9514 1404 393
Answer:
B. (4, 28)
Step-by-step explanation:
Substitute the value of x into the first equation. This gives you the value of y.
y = 8x -4x = 4After substitution, we have ...
y = 8(4) -4
y = 28
Then the point is (x, y) = (4, 28).
Related Questions
Is there another way to convert fractions to decimals?
Answers
PLEASE HELP ME LIKE IM GOING TO CRY ILL give you brainliest if the answer is correct and 20/40 points..............Ben participated in a race. During the first half of the race, he walked 3 miles and ran at a rate of 5 miles per hour for x hours. During the second half of the race, he walked for 2 miles and ran at a rate of 5.5 miles per hour for x hours. What equation could you write to solve for the number of hours Ben ran during each half of the race? Let y represent the number of miles in half the race. Write two equations, one for the first half of the race and one for the second half. How could you transform these two equations to be the same as the original equation you wrote to solve for x? What do you think this means about solving for the variables in a situation represented by two equations?
Answers
Answer:
Answer are at the bottom!
Step-by-step explanation:
First equation: y=5x
Second equation: y=5.5x
Unit rate:
x/5.5
5.5/5.5
x/1
Hope this helps!
The volume of a right circular cone is 45 cubic centimeters, and the radius of
the base is 3 centimeters. What is the height of the cone in centimeters?
Answers
Answer:
5cm
Step-by-step explanation:
Given parameters:
Volume = 45cm³
Radius = 3cm
Unknown:
Height of the cone = ?
Solution:
Volume of cone is given as ;
V = [tex]\frac{1}{3} \pi[/tex] r² h
r is the radius
h is the height
45 = [tex]\frac{1}{3} \pi[/tex]x 3² x h
45 = 3π x h
h = [tex]\frac{45}{3 x3.142}[/tex] = 4.77cm
5cm is the closest answer choice
Here is the other question
Part A and B are done
A. Lesson
1. Describe the formula for slope in words and with an equation.
M=y^2-y^1/x^2-x^1
1. What is the slope of all horizontal lines? What is the slope of all vertical lines?
The slope of all horizontal lines is 0. The slope of all vertical lines is undefined.
B. Lesson Content
3. Copy and paste the 3-step procedure for finding the slope using the formula.
4. Use Example 3 as your model for the following: In the 2000 census, the population was 8000; in the 2010 census, the population was 7500. Find the rate of growth for the town. Show the 3-step procedure, as well as the final answer in words.
A(200(x1), 8000(y1)) and B(2010(x2), 7500(y2))
M=(y2-y1)(x1-x2)=7500-8000/2010-2000
M=-50=50 people per year decrease
C. Write the slope-intercept (y = mx + b) form of the equation from the information given. Show your steps as done in the lesson content to earn credit.
Answers
Answer:
Step-by-step explanation:
Slope is m
in this case slope is -50
b is the y-int,
in this case the y-int is 8000
so your equation: y = -50x + 8000
PLS ANSWER NO MESSING AROUND PLSSSSSS TWO PEOPLE ALREADY FAKED IT
Answers
Answer:
Step-by-step explanation:
1). 3
2). $23.63
3). 18.1 seconds
______ terms are also expressions. (please fill in the blank)
A. No
B. All
C. Some
Answers
Answer: The answer is some
I know this because I go to Harvard
Answer:
The answer is some
What is the slope of the line through (3,7) and (-1,4)
Answers
Answer:
[tex]m=\frac{3}{4}[/tex]
General Formulas and Concepts:
Pre-Alg
Order of Operations: BPEMDASAlg I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Step-by-step explanation:
Step 1: Define
Point (3, 7)
Point (-1, 4)
Step 2: Solve for slope m
Substitute: [tex]m=\frac{4-7}{-1-3}[/tex]Subtract: [tex]m=\frac{-3}{-4}[/tex]Simplify: [tex]m=\frac{3}{4}[/tex]Answer:
4/3
Step-by-step explanation:
Use the formula rise/run. But first, if you plot this on a graph, (-1,4) will come first because its x value is smaller. So, for this, let's look at (-1,4) first.
To get from -1 to 3, you must rise 4 units. To get from 4 to 7, you must run 3 units.
So, if you put this together, you will get 4/3!
Hope I helped!!!!
Can someone help me???
Answers
A car with a mass of 500 kg is accelerating at 10 m/s². What is the force being applied the car’s engine?
Answers
Answer:
M=500kg
a=10m/s^2
By formular:
F=ma
F=500*10
F=5000N
which of the following terminating decimals is equivalent to -1 3\4
Answers
Answer:
Step-by-step explanation:
-1 3/4 = -1.75.
Suppose 15% of x equals 20% of y. What percentage of x is y ?
Answers
Answer:
x = [tex]133\frac{1}{3}[/tex] of y
Step-by-step explanation:
Given:
15% of x equals 20% of y
So,
0.15x = 0.20y
so
x = 0.20 y / 0.15
x = 1.3333y
x = [tex]133\frac{1}{3}[/tex] of y
Answer:
Step-by-step explanation:
Estimate the product 0.62 x 104
Answers
Answer:
The estimated product is 52.
Step-by-step explanation:
0.62 is 0.38 away from one and 0.12 away from 0.5. Since it's closer to 0.5, we'll round it to that. 104 doesn't need to be rounded because it's a whole number. So, 1/2 of 104 is 52. The estimated product is 52
Hope this helps! :)
Give your answer in simplest form.
Answers
Answer:
The answer is -1
Step-by-step explanation:
PLEASE MARK BRAINLIEST IT WILL HELP SM
And if you are looking for more help go to math-way
Start to solve in the brackets first and then do the exponents and then do the rest
In short ur bedmas
Where
B means brackets
E means exponent
D division
M multiple
A addition
S subtract
Giving 100 points if someone can answer this correctly...
x³+y³+z³=42
What is x y and z multiplied by 9.08 * 10³
this question is dumb. you should be able to get it
Answers
Answer:
3813.6
Step-by-step explanation:
90.8 x 42 = 3813.6
Solve the following formula for
x
y=2mx+3b
Answers
Answer:
X=2m+3b/y. I th ink that the answer.
If there are 63 butterflies in 3 gardens, how many butterflies are in 2 gardens?
Answers
Answer:
42
Step-by-step explanation:
63 divided by 3 first because you need to break each group down into equal gardens with the same amount of butterflies.
now you have 21 you need to multiply with the number 2 because you need to know how many butterflies are in two gardens
and now you get 42
22. Determine the value of c so that the line
segment with endpoints B(2, 2) and C(9,6)
BC
is parallel to the line segment with endpoints
D(c, -7) and E(5, -3).
help is appreciated !!!
Answers
Answer:(
(-4,-3)
Step-by-step explanation:
You get the negative and subtract from y1 and y2 and then ad x1 with the result of the subtraciton. : ) hope this helps!
How would you graph the solution to 3x ≤ -15?
Answers
Answer:
I would put a shade over the region of x <= -5.
Step-by-step explanation:
The look of the graph would be a shaded rectangle over the line x = -5.
Hope this helped!
Answer:
Draw a closed circle on -5 and shade to the left
Step-by-step explanation:
Find the distance between -12 and 25
Answers
Answer:
37
Step-by-step explanation:
Answer:
37
Step-by-step explanation:
You can use absolute value to solve this. l-12l+l25l=12+25=37
Absolute value is the distance from 0.
Paul drank 18.2 ounces of water per day during soccer practice for a total of 54.6 ounces of water. Ryan drank 20.4 ounces of water each day after football practice for a total of 81.6 ounces of water. How many more days of practice did Ryan have than Paul?
A.
They both had the same number of days.
B.
1 day
C.
2 days
D.
3 days
Answers
Answer:
B
Step-by-step explanation:
Paul: 54.6/18.2= 3 days
Ryan: 81.6/20.4= 4 days
Answer:
B. 1 day
Step-by-step explanation:
First, we need to find how many days each person practiced for:
Paul- 54.6 ÷ 18.2 = 3
Ryan- 81.6 ÷ 20.4 = 4
4 - 3 = 1, so B is the answer.
I hope this helped, please mark Brainliest, thank you!
PLEASEEEE HELPPP!!
Which property is illustrated by the equation
3x – 6y = 3(x - 2y)?
1. associative
2.Commutative
3.distributive
4.closure
Answers
Answer:distributive
Step-by-step explanation:
which is the best estimate for this expression ?
a) 300
b) 40
c) 3
d)0.4
Answers
Answer:
A
Step-by-step explanation:
Which of these expressions shows unlike terms?
Your answer:
2x +7x
2x+2y
2(x+1)
3x+1x
Answers
Answer:
2x+2y
Step-by-step explanation:
x and y are unlike terms, and the only unlike terms in this list. you cannot add them together – therefore, 2x+2y is the answer you seek.
V = LWH solve for the variable w
Answers
Answer:
w=v/lh
Step-by-step explanation:
Circle W
Now divide LH from V
W=V/LH
That’s the answer!
Topic: Integrals
Subject: Calculus
If anyone could help I’d appreciate! I will certainly award points and give brainliest answer ASAP!! I promise :)
Answers
9514 1404 393
Answer:
11 7/16
Step-by-step explanation:
The integration resolves into finding the area of two triangles. The left has a height of (-3/8(-2/3)+2) = 2 1/4, and a width of (16/3-(-2/3)) = 6. Then its area is ...
A = (1/2)bh = (1/2)(6)(2 1/4) = 6 3/4
__
The right triangle has a height of |(-3/8)(31/3) +2| = |-31/8+16/8| = 15/8. Its width is (31/3) -(16/3) = 5, so its area is ...
A = (1/2)(5)(15/8) = 75/16 = 4 11/16
Then the total area, the value of the integral, is ...
6 3/4 +4 11/16 = 10 23/16 = 11 7/16 . . . the value of the integral
The x-axis is the ? Axis
The y-axis is the ? Axis
Another name for the point 0,0 is the ?
Answers
Answer:
The x-axis is the HORIZONTAL axis (left to right)
The y-axis the VERTICAL axis ( up and down)
Another name for the point (0 , 0) is the ORIGIN
the u axis is vertical
another name for the point is origin
I’ll give the Brainliest to who answers this question with a reasonable explanation.
Find the best buy between 6.2 oz. for $2.97 or 8 oz. for $3.47.
A) Buying 8 oz for $3.47 is the better buy.
B) Buying 6.2 oz for $2.97 is the better buy.
Thank you!
Answers
Not sure if its right-
0.7,7/9,7/8 order least to greatest
Answers
solve equation by factoring 8x^2-8x=0
Answers
Step by step:
Step 1: Factor left side of equation.
= 8x (x – 1) = 0
Step 2: Set factors equal to 0.
= 8x = 0 , x = -1 = 0
= x = 0 , x = –1
Five times the sum of a number and 27 is greater than or equal to six times the sum of that number and 26. What is the solution set of this problem?
a. (♾,-21)
b. (♾, -21)
c. (-21,♾)
d. (21,♾)
Answers
Answer:
c
Step-by-step explanation:
i honetsly think