Fiona is trying to prove that a pair of expressions are equivalent by using substitution. Which pair of expressions has the same value if she substitutes y = 3?
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Missing Part of the Question
3 (4 - y) -7 ; 5 + 3y 9 + y + 4y - 2 - 3y; -2y + 7 5 + y - 2 - 6y + y; 8y + 3 2y + 7 + y - 2 + y; 4y + 5Answer:
2y + 7 + y - 2 + y; 4y + 5Step-by-step explanation:
Given
y = 3
Required
Which pair of expression are equal
To get the pair of expression that are equal; we simply substitute 3 for y in each of the expressions
3 (4 - y) -7 and 5 + 3y
Substitute 3 for y in 3 (4 - y) -7
This gives 3(4 - 3) -7
= 3(1) - 7
= 3 - 7
= -4
Then Substitute 3 for y in 5 + 3y
This gives 5 + 3(3)
= 5 + 9
= 14
-4 and 14 are not equal
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9 + y + 4y - 2 - 3y; -2y + 7
Substitute 3 for y in 9 + y + 4y - 2 - 3y
This gives 9 + 3 + 4(3) - 2 - 3(3)
= 9 + 3 + 12 - 2 - 9
= 13
Then Substitute 3 for y in -2y + 7
This gives -2(3) + 7
= -6 + 7
= 1
13 and 1 are not equal
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5 + y - 2 - 6y + y; 8y + 3
Substitute 3 for y in 5 + y - 2 - 6y + y
This gives 5 + 3 - 2 - 6(3) + 3
= 5 + 3 - 2 - 18 + 3
= -9
Then Substitute 3 for y in 8y + 3
This gives 8(3) + 3
= 24 + 3
= 27
-9 and 27 are not equal
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2y + 7 + y - 2 + y; 4y + 5
Substitute 3 for y in 2y + 7 + y - 2 + y
This gives 2(3) + 7 + 3 - 2 + 3
= 6 + 7 + 3 - 2 + 3
= 17
Then Substitute 3 for y in 4y + 5
This gives 4(3) + 5
= 12 + 5
= 17
17 and 17 are equal
Hence, Option D is correct
Answer: 2y + 7 + y - 2 + y; 4y + 5
Step-by-step explanation: just did it
Related Questions
(rule is subtract 13 )
Answers
-6
-4
-3
0
4
5
Out
-19
-17
-16
-13
-11
-8
Answer:
in: 0
Out: -19, -16, and -9
Step-by-step explanation:
-6 - 13 = -19
-3 - 13 = -16
-13 + 13 = 0
4 - 13 = -9
Mike has a poster that he wants to copy onto a mural at school. The dimensions of the poster are shown. If Mike doubles the dimensions of the poster, what will be the area, in square feet, covered by his copy?
Answers
Answer:
34
Step-by-step explanation:
Explanation:
a metal measuring tape expands when the temperature goes above 50 f.For every degree fahrenheit above 50, its length increases by 0.00064%. the temperature is 100 degrees fahrenheit. how much longer is a 30-feet measuring tape than its correct length?
Answers
Answer:
30.032
Step-by-step explanation:
Write a real-world problem that you could represent with the equation
3+x= 10. Solve the equation to find the answer to your problem.
Answers
Answer:
x=7
Step-by-step explanation:
please help with this math expression
Answers
Answer:
A
Step-by-step explanation:
add together like terms.
5x^2-8xy+y^2
If a radius of a sphere is divided by 2, will the surface area be divided by 2?
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If the radius is doubled then its surface area = 4(pi)(2r)^2 = 4*4(pi)r^2.
So the surface area becomes 4-fold or the increase in surface area is 300%.
find the surface area of the triangular prism
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Answer:
164 square centimeters
Step-by-step explanation:
S = 2(1/2)(5)(4) + 5(9) + 5(9) + 6(9)
= 20 + 45 + 45 + 54
= 164 square centimeters
Answer:same
Step-by-step explanation:
I need help with this question, I'm not very good at math and all help is appreciated!
Answers
Answer:
A
Step-by-step explanation:
We can solve for H by isolating it on one side of the equation, as follows:
J/H - I/H = G
Taking H as the common denominator:
(J - I)/H = G
Multiplying both sides by H:
J - I = GH
Adding I to both sides:
J = GH + I
Dividing both sides by G:
H = (J - I)/G
So the answer is
(A)
H = (J - I)/G.
Answer: A
Step-by-step explanation:
\(\frac{J}{H} = G + \frac{I}{H}\) >Since you are solving for H bring I/H to the other side
by subtracting I/H from both sides
\(\frac{J}{H}- \frac{I}{H} = G\) >There is a common denominator so you can
combine the fractions
\(\frac{J-I}{H} = G\) >Multiply both sides by H or cross multiply whichever
way your mind things about how to get H on top
\(J-I = G(H)\) >Divide both sides by G
\(\frac{J-I}{G} = H\) >Answer is A
Keira said that if 6 tickets are sold, there should be 2 tickets left. Is Keira correct?
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According to Keira, if 6 tickets are sold, there should be 2 tickets left. However, we don't have any information about the initial number of tickets available.
If the total number of tickets initially was 8, and 6 tickets were sold, then there would indeed be 2 tickets left, supporting Keira's statement.
However, if the total number of tickets initially was less than 8, or if the statement doesn't specify the initial number of tickets, we cannot determine if Keira's statement is correct.
Therefore, without additional information, we cannot determine the accuracy of Keira's statement.
Answer the question below please!! :D
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help me please this is due today.
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Answer:
please the answer is 84ft
Find the solution set of the inequality.
10c + 5 ≤ 45
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-
PLEASE HELP LOOK AT THE IMAGE
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Answer:
33.(333)%
Step-by-step explanation:
1/3 of the pie is less than 3, so 33.(33)%
There are 3 questions each picture is the question
1. Which is the volume of the rectangular prism?
A.
15 m3
B.
16 m3
C.
60 m3
D.
120 m3
2. Which expression can be used to find the volume of the prism?
A. (9×5)+4
B. 20+9
C. (5×4)+(5×9)
D. 5×9×4
3. Jason is making a sandbox for his little brother. The sandbox is 2 ft. deep. What is the volume of the sandbox?
A. 9 ft.³
B. 12 ft.³
C. 24 ft.³
D. 36ft.³
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Question 2: D. 5x9x4
Question 3: C. 24 ft. ^3
Solve each of the given equations and show your work. If the equation has no solution or infinitely many solutions, circle that instead of writing an answer.
6. 2(x+3.5)-x=-3(6-2x) ANSWER: __________
no solution infinitely many solutions
7. -17+2(1+3x)=x-5(3-x) ANSWER: __________
no solution
infinitely many solutions
8. -2(x+4)+9x=4+7x ANSWER: __________
no solution
infinitely many solutions
Answers
Answer:
6.) -3.544
Step-by-step explanation:
6.2(x+3.5)-x =6.2x+21.7 -x =6.2x-x+21.7 =5.2x+21.7
-3(6-2x) =-18(+-)6x =-18-6x
5.2x +6x=-18-21.7
11.2x=-39.7
x=-39.7÷11.2
x=3.544
2(x+3.5)-x-3(6-2x)
can i have some help
What is the perimeter of this composite shape? ___ ft.
Use 3.14 for "pi" and round to the nearest hundredths place
Answers
Answer:
36.85 ft
Step-by-step explanation:
3 feet on either end + 6 feet on either side + circumference of the circle
3 + 3 + 6 + 6 + circumference of the circle
18 + circumference of the circle
You can find the circle's diameter by subtracting 6 from 12. You get 6. You can find the radius by dividing the diameter by 2. You get 3.
The formula for circumference is 2·π·Radius
2 · π · 3 = 6 · π = 6 · 3.14 ≈ 36.85
−9 ≤ −3; Add 12 to both sides
13 > −5; Subtract 13 from both sides.
hehehehe help and you'll get brain and i reward for someone
Answers
Answer:
1. True
2. True
Step-by-step explanation:
1. 12−9≤−3+12
3≤9
True.
2. 13−13>−5−13
0>−18
True.
solve this question for 30 points and brainliest :
Solve for x: 1/x-1/3=-1/3x
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Answer:
x =1+i√11/2,1−i√11/2
Step-by-step explanation:
/2 means that everything before it is divided by 2. Basically, each side is divided by 2, it just wont let me do that function on here ;)
Hope this helps!
Can someone help I'm stuck
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Answer:
for number 12 the answer is 1.5
Step-by-step explanation:
5.5 - 4 = 1.5 (answer not equation)
EQUATION : 4 + 1.5 or 5.5 - 4 either or would work ig
he scatter plot and line of best fit below show the length of 14 people's femur (the long leg bone in the thigh) and their height in centimeters. Based on the line of best fit, what would be the predicted femur length for someone with a height of 229 cm?
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PLEASE HELP ME WITH THIS QUESTION
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Ty
Answer:
62 sorry if im wrong
Step-by-step explanation:
8th grade math i mark as brainliest
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Answer:
1/6
Step-by-step explanation:
mean of 8 5 7 5 9 3 5
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Which of the following are true?
I.
14
II.
17 40 5
III.
17 8 20 +
A only I and II
B only II and III
C none of them
D all of them
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Which values are in the solution set of the inequality -9/4x+12≥-8? Select all that apply. A. 6 B. 7 C. 8 D. 10 E. 11
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Answer: A, B, C
Step-by-step explanation:
To solve for the inequality, we would solve it as if it had an equals sign.
\(-\frac{9}{4} x+12\geq -8\) [subtract both sides by 12]
\(-\frac{9}{4} x\geq -20\) [multiply both sides by -4/9, remember to flip inequality]
\(x\leq \frac{80}{9}\)
Now, we know that the solution is less than or equal to 80/9, which is approximately 8.89.
Looking at the answer choices, A, B and C are the answers since they are both less than 8.89.
Explanation:
I'm pretty sure its B but I just need reinsurance
Answers
Answer:
i think it might be B
plz correct me if im wrong
Step-by-step explanation:
................
Angle B and angle C are supplementary. If the measure of angle B is 14 times the measure of angle C, what is the difference between the angles' measures?
Enter your answer as the correct number of degrees, like this: 42
HELP PLEASEEEEEE
Answers
Answer:
156°Step 1: Create an Equation Using the idea (Angle B + Angle C = 180°)
=> 14x + x = 180°
Step 2: Solve.
=> 14x + x = 180°
=> 15x = 180°
=> x = 12°
Step 3: Multiply 12 by 14.
=> 12 x 14 = 168°
Step 4: Subtract 168 by 12.
=> 168 - 12
=> 156°
Final Answer:
After working on this problem, we can conclude that the difference between Angle B and Angle C is 156°
Hoped this helped.
Find the surface area of a top open cylinder
12 in radius
2 in height
Answers
The surface area of the top open cylinder is 6810.149 sq.cm.
A cylinder is a three-dimensional solid that consists of two congruent surfaces (bases) and one lateral surface.
Surface area of a cylinder = Base area + Lateral area
Base area of a cylinder = 2 × π × r²
Lateral area of a cylinder = (2 × π × r) × h
Therefore, here base area of a cylinder = 2× π × 12²
= 5837.27 sq.cm.
And, lateral area of a cylinder = (2 × π × 12) × 2
= 972.8784 sq.cm.
Therefore, total surface area of a cylinder = 5837.27 + 972.8784
= 6810.149 sq.cm.
To know more about surface area:
https://brainly.com/question/951562
30 POINTS
Describe a real-world situation in which opposite quantities combine to make zero.
AT - LEAST 3 SENCETENCES NO COPYING OR PLAGARISM IF SO I WILL REPORT DO THIS IN YOU'R OWN WORDS
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Answer:situations in which opposite quantities combine to make 0. For example, a hydrogen atom has 0 charge because its two constituents are oppositely charged; and understand p + q as the number located a distance |q| from p, in the positive or negative direction depending on whether q is positive or negative.
Step-by-step explanation:
What is the reciprocal of 1 2/7 ?
Answers
Answer:
7/9
Step-by-step explanation:
Change it to an improper fraction. So 7 times 1 plus 2. Which would be 9/7. The reciprocal is just flipping the numerator and denominator.
Answer:
7/9
Step-by-step explanation:
improper fraction of 1 2/7 is 9/7 . reciprocal is when flip both numbers so it would now be 7/9.