4 years ago

3x + 4y = 17 -6x = 10y - 39

Mathematics

1 answer:

ad-work [718]4 years ago

4 0

Substitute your cleaned up equation for x into the first equation and solve for y first then x

You might be interested in

a number machine uses a rule to charge input numbers into output numbers. this number machine charged 4 into 16, 5 into 20, and

DaniilM [7]

Answer:

Step-by-step explanation:

The function that we have in this is f(x) = 4x. We can see this in 4 * 4 = 16, 5 * 4 = 20 and 6 * 4 = 24. Therefore, following the pattern, 7 * 4 = 28.

6 0

3 years ago

I'm not sure how to get the answer to this...

andreyandreev [35.5K]

If im not wrong. The answer would be 11.6 because you need to substract b-a which gives you 5.8. Then you multiply that by 2.

4 0

4 years ago

Suppose that A is nonsingular. Prove that its inverse A-1 is unique. [Hint: Show that if there exists two matrices, B and C, suc

Bogdan [553]

Answer with Step-by-step explanation:

Let A is non-singular

$\mid A\mid\neq 0$

We have to prove that $A^{-1}$ is unique.

Suppose B and C are inverse of A such that

$BA=I$ and AC=I

By using property $AA^{-1}=A^{-1}A=I$

$C=C$

$(BA)C=B(AC)$

$I\cdot C=B\cdot I$

$C=B$

Hence, the inverse of A is unique.

4 0

3 years ago

HIJ Inc. Purchases a truck for $32,000 on January 1st, 2019. The vehicle is estimated to have a useful life of 15 years, at whic

Artyom0805 [142]

Answer:

#See solution and attached for details

Step-by-step explanation:

Straight line method assumes a gradual depreciation in value of an asset's useful life.

-It's calculated by dividing the difference between an asset's cost and its expected salvage value by the number of years it is expected to be used.

$Dep/yr=(A-Salvage)/n\ \ \ \ \ \ n=15, A=32000\\=(32000-2000)/15\\=2000$

From our calculation, depreciation is $2,000 per year

Accumulated depreciation=8*2000=$16,000

5 0

3 years ago

There are 12 grams of sugar in 1⁄3 of a piece of candy. How much sugar is in 3⁄4 of a piece of candy?

tatiyna

I'm pretty sure that the answer to your question would be 27. hope that helps.

4 0

3 years ago