1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
GalinKa [24]
3 years ago
15

Follow the directions to solve the system of equations by elimination. 8x + 7y = 39 4x – 14y = –68 Multiply the first equation t

o enable the elimination of the y-term. Add the equations to eliminate the y-terms. Solve the new equation for the x-value. Substitute the x-value back into either original equation to find the y-value. Check the solution.
Mathematics
2 answers:
Helga [31]3 years ago
7 0

Answer:

x=½

y=5

Step-by-step explanation:

(8x+7y=39)2

16x+14y=78

<u>4</u><u>x</u><u>-</u><u>1</u><u>4</u><u>y</u><u>=</u><u>-</u><u>6</u><u>8</u> add the two equations

20x=10.

divide both sides by 20

x=½

8x+7y=39

4+7y=39

7y=39-4

7y=35

y=5

MrMuchimi3 years ago
3 0

Answer:

1/2     5

Step-by-step explanation:

You might be interested in
A square has a side of 400 feet. how many squares with a side length of 2 can compliantly cover this square
Charra [1.4K]
400*400=160,000 which is the area of the square

2*2=4 which is the area of the smaller square

160,000/4=40,000

40,000 of the smaller squares can fit inside the larger square
8 0
3 years ago
A rectangular family room is 18 feet long and 14 feet wide.
Firlakuza [10]

Answer:

4 pieces of chair rail are needed

Step-by-step explanation:

<u>Step 1: Calculate the perimeter of the room</u>

Perimeter of rectangle = 2L + 2B

Length = 18

Breadth = 14

Perimeter of room = 2(18) + 2(14)

Perimeter of room = 64 feet

<u>Step 2: Calculate the pieces of chair rail needed</u>

<em>Perimeter of room = 64 feet</em>

<em>Length of each chair rail = 16 feet</em>

<em>Total chair rails needed = Perimeter of room/length of each chair rail</em>

<em>Total chair rails needed = 64/16</em>

Total chair rails needed = 4

Therefore, Mr. Herzog needs 4 pieces of chair rails.

5 0
3 years ago
6/8 ÷2/6=<br> HELP FASTI NEED HELP IN 4-5 MINS
GenaCL600 [577]

Answer:

2 and 1/4 or 2.25

Step-by-step explanation:

6/8 ÷ 2/6...

so 6/8 × 6/2...

36/16...

9/4..

2 1/4 or 2.25

3 0
2 years ago
Read 2 more answers
-2 times g(4) when g(x) =-x squared+(4x)-11
andrezito [222]

Answer:

+22

Step-by-step explanation:

Given g(x) = -x^2 + 4x - 11, g(4) is -(4)^2 + 4(4) - 11, or just -11.

Then -2 times g(4) = -2(-11) = +22

3 0
3 years ago
How do I solve this?​
crimeas [40]

Answer:

The final answer is (2,-1)

(also idek what I did in the photo but I'm positive the answer is (2,-1)

7 0
2 years ago
Other questions:
  • Please explain this I need help
    11·1 answer
  • Graph the image of the given triangle under a dilation with a scale factor of -3 and center of dilation (0,0).
    8·2 answers
  • Report your TWO scores for The Property of Numbers and Number Sets in fractional form.
    9·1 answer
  • Over which interval is the graph of f(x) = –x2 3x 8 increasing?
    6·2 answers
  • Gears A and B work together. Gear A turns 30 times when Gear B turns 45 times. When Gear B turns 12 times, how many times does G
    14·1 answer
  • Krysta has $100 in a savings account that earns 5% annually. The interest is not
    7·1 answer
  • Plzz anserw all the pics below
    15·1 answer
  • From a full 2-litre jug of water Sam pours 5/4<br> litres.<br><br> What fraction of a litre is left?
    5·2 answers
  • Helpppp meee pleaseeeeeeeeee!!!’
    12·2 answers
  • Question is in the photo.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!