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AfilCa [17]
3 years ago
7

Ren was trying to solve a system of linear equations. He correctly argued that he could replace one equation by the sum of that

equation and a multiple of the other. H
produce a system that has the same solution as the original system.
To show this, Ren wrote down a system of equations. He then determined which other systems of equations would have the same solution as his original system. Rem
below.
-2x - 5y = -47
4x - 2y = -2
Complete the table below to determine which system(s) of equations has the same solution as the original system shown above. Choose Has the Same Solution or Do
for each system of equations.
Has the Same Solution Does Not Have the Same Solution
-14x + y = -41
4x - 2y = -2
-2x - 5y = -47
6x + 3y = 45
-2x - 5y = 47
8x - 5y = -8
0 0 0
Mathematics
1 answer:
Fittoniya [83]3 years ago
7 0

Answer:

1. yes 2. yes 3. no

Step-by-step explanation:

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Brandon answered 21 of the 25 questions on his history test correctly. What decimal represents the fraction of problems he answe
mamaluj [8]

Answer:

.84

Step-by-step explanation:

21/25 = .84

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3 years ago
Ted and Alan are in a race to double their money. Ted feels he will win if he puts his $4,000 into a savings account offering 4.
siniylev [52]
Ted: 
4,000 @ 4.5% interest compounded annually

Alan:
1,000 @ 6% interest compounded annually 

Rule of 72: divide 72 by the compound annual interest rate

Ted: 72/4.5% = 16 years
Alan: 72/6% = 12 years

<span>Alan will win. It will take 12 years.</span>
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3 years ago
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What is the answer for 3.7-4.2n-3n+8
Romashka-Z-Leto [24]

The Answer:

11.7 - 7.2n

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3 years ago
Write a quadratic function f whose zeros are 3 and -10.<br> f(x) =
andreyandreev [35.5K]

Answer:

f(x)= x^2 + 7x - 30

5 0
3 years ago
What is the value of x?
lorasvet [3.4K]

Answer:

x=9

Step-by-step explanation:

We can use similar triangles and ratios.  Put the small triangle side over the large triangle side.

9cm            3x -20

----------   = ----------------    We need to add the sides to get to the larger triangle

72+9 cm   3x-20 + 56


We can cross multiply to solve

9 * (3x-20+56) = (72+9) * (3x-20)

Simplify

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Distribute

27x +324 = 243x -1620

Subtract 27x from each side

27x-27x +324 = 243x-27x -1620

324 = 216x-1620

Add 1620 to each side

324+1620 = 216x

1944 = 216x

Divide each side by 216

1944/216 = 216x/216

9=x

6 0
3 years ago
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