All categories

2 years ago

10x − 10y = –20 –10x + 4y = –16

Mathematics

1 answer:

victus00 [196]2 years ago

6 0

Step-by-step explanation:

10x - 10y = -20

-10y = -20 - 10x

y = -20/-10 - 10x/-10

y = 2 + x

-10x + 4y = -16

-10x + 4(2 + x) = -16

-10x + 8 + 4x = -16

-6x = -24

x = -24/-6

x = 4

y = 2 + x

y = 2 + 4

y = 6

Solution = (4,6)

You might be interested in

What are the solutions for x when y is equal to 0 in the following quadratic

lawyer [7]

Answer:

D) x = -12 or x = 2

Step-by-step explanation:

The given quadratic equation is:

$y=x^2+10x-24$

When y=0, we obtain:

$x^2+10x-24=0$

We split the middle term with -2, 12 because their product is is -24 and their sum is 10.

$x^2-2x+12x-24=0$

We factor by grouping to obtain:

$x(x-2)+12(x-2)=0$

$(x-2)(x+12)=0$

Either $(x-2)=0$ or $(x+12)=0$

Either $x=2$ or $x=-12$

7 0

3 years ago

What’s 1/5 divided by 1/12?

Ksivusya [100]

When divided fractions you flip the second fraction

1/5 x 12/1

This then equals
12/5

That simplifies to 2 2/5

7 0

2 years ago

Read 2 more answers

If jordan runs 16 miles and Jake ran 18 times as many how many miles did jake ran

QveST [7]

Answer:

288 miles

Step-by-step explanation:

18 times 16

5 0

2 years ago

Read 2 more answers

What is the surface area of this

DochEvi [55]

Answer:

814 in ^2

Step-by-step explanation:

2(wl x hl x hw)

hope this helps

8 0

2 years ago

What does 14.25 round to?

Assoli18 [71]

Here are the posibilities

10,00

14,00

14.30

It all depends on what place value you are talking about.

6 0

3 years ago

Read 2 more answers