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Georgia [21]
3 years ago
10

Use substitution to solve the linear system of equations.

Mathematics
1 answer:
zzz [600]3 years ago
5 0
<span>5x - y = 15 (1)
-10x+2y=-30 (2)

multiply (1) by 2

10x - 2y = 30
</span>-10x + 2y = -30 (2)
<span>---------------------------add
0 = 0

answer
</span><span>infinitely many solutions</span><span>

</span>
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Please answer this question please ​
Bas_tet [7]
<h3>Answer:</h3><h3 /><h3>Amount = Rs 13891.50</h3><h3>Compound interest = Rs 1891.50</h3>

Step-by-step explanation:

C = Amount (A) - Principal (P)

Where

C is the compound interest

To find the amount we use the formula

A = P ({1 +  \frac{r}{100} })^{n}

where

P is the principal

r is the rate

n is the period / time

From the question

P = Rs 12, 000

r = 5%

n = 3 years

Substitute the values into the above formula

That's

A = 12000 ({1 +  \frac{5}{100} })^{3}  \\ A = 12000(1 + 0.05)^{3}  \\ A = 12000 ({1.05})^{3}

We have the answer as

<h3>Amount = Rs 13891.50</h3>

Compound interest = 13891.50 - 12000

<h3>Compound interest = Rs 1891.50</h3>

Hope this helps you

8 0
3 years ago
Identify the vertex of the function, f(x) = 3(x - 1)2 + 5.
Softa [21]
I believe it is (1,5)
6 0
3 years ago
2u + 1 &gt; -5/4u - 9<br><br> help please
FinnZ [79.3K]
2u + 1 > -5/4u - 9
2u + 5/4u > -9 - 1
8/4u + 5/4u > -10
13/4u > -10
u > - 10 * 4/13
u > -40/13 or - 3 1/13 <=
4 0
3 years ago
The quotient of two numbers is 4. their sum is 20. What are the two numbers?
kari74 [83]

9514 1404 393

Answer:

  16 and 4

Step-by-step explanation:

If x is the smaller one, then the larger is 4x. Their sum is ...

  x + 4x = 20

  x = 20/5 = 4

The two numbers are 16 and 4.

4 0
2 years ago
3<br> x2 + 5x + 6<br> + <br> x − 1<br> x + 2<br> = <br> 7<br> x + 3
skelet666 [1.2K]

Your format is not placed correctly. It seems like you just copied and pasted your question into brainly. Try to make the question again.

5 0
2 years ago
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