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2 years ago

Solve the system of equations - 6x + 8y = –10 and - 4x + y = –11 by combining the equations.

1 answer:

5 0

Answer: (3, 1) :)

Explanation:
-6x + 8y = -10
-4x + y = -11
-32x + 8y = -88
26x = 78
x = 3
-18 + 8y = -10
8y = 8
y = 1

(Also, can I have brainliest please?)

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mart [117]

Answer:

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Step-by-step explanation:

kind a mouth full

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2 years ago

Solve t/he system of linear equations given by x + y = 1 and ax − by = c, where a, b, c are real numbers. Note: The solution in

Phantasy [73]

Answer:

see explanation

Step-by-step explanation:

Given the 2 equations

x + y = 1 → (1)

ax - by = c → (2)

In (1) subtract y from both sides

x = 1 - y → (3)

Substitute x = 1 - y into (2)

a(1 - y) - by = c ← distribute left side

a - ay - by = c ( subtract a from both sides )

- ay - by = c - a ( multiply through by - 1 )

ay + by = a - c ← factor out y from each term on the left side

y(a + b) = a - c ← divide both sides by (a + b)

y = $\frac{a-c}{a+b}$ ← substitute into (3)

x = 1 - $\frac{a-c}{a+b}$ = $\frac{a+b}{a+b}$ - $\frac{a-c}{a+b}$ = $\frac{a+b-a+c}{a+b}$ = $\frac{b+c}{a+b}$

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2 years ago

Find the simple interest on 500 at 6% for 1 year

ololo11 [35]

Answer:

Interest = $30

Step-by-step explanation:

Formula:

I = prt or I = p · r · t

So:

I = p r t

I = ($500)(.06)(1) <--- Just multiply all of these numbers and you get the final answer of:

Interest = $30.00 or just $30

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3 years ago

WILL MARK BRAINLIEST PLS HELP

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Answer:

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Step-by-step explanation:

we know that the circumference of the circle is equal to

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we have

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3 years ago

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Anettt [7]

These matrices ARE inverses of each other!

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2 years ago