All categories

3 years ago

Can someone solve -5x +2y=10

Mathematics

2 answers:

marta [7]3 years ago

6 0

Answer:

$x=\frac{2}{5}y-2$

Step-by-step explanation:

$-5x+2y=10\\-5x+2y-2y=10-2y\\-5x=2y-10\\\frac{-5x}{-5}=\frac{2y-10}{5}\\ x=\frac{2}{5}y-2$

slamgirl [31]3 years ago

5 0

X=2/5y -2
I think I not really sure

You might be interested in

Prove that if r is any rational number, then 3r2 − 2r + 4 is rational. The following properties may be used in your proof. Prope

ziro4ka [17]

Given:

Expression is

$3r^2-2r+4$

To prove:

If r is any rational number, then $3r^2-2r+4$ is rational.

Step-by-step explanation:

Property 1: Every integer is a rational number. It is Theorem 4.3.1.

Property 2: The sum of any two rational numbers is rational. It is Theorem 4.3.2.

Property 3: The product of any two rational numbers is rational. It is Exercise 15 in Section 4.3.

Let r be any rational number.

We have,

$3r^2-2r+4$

It can be written as

$3(r\times r)-2r+4$

Now,

3, -2 and 4 are rational numbers by property 1.

$r^2=r\times r$ is rational by Property 3.

$3r^2\text{ and }-2r$ are rational by Property 3.

$3r^2+(-2r)+4$ is rational by property 2.

So, $3r^2-2r+4$ is rational.

Hence proved.

6 0

3 years ago

What is f(g(x)) when f(x) = x2 + 5, and g(x) = 10 - 5x?

Mashutka [201]

Answer:

Step-by-step explanation:

To obtain f(g(x)) substitute x = g(x) into f(x), that is

f(10 - 5x)

= (10 - 5x)² + 5 ← expand (10 - 5x)²

= 100 - 50x - 50x + 25x² + 5 ← collect like terms

= 25x² - 100x + 105 → D

5 0

3 years ago

Luden [163]

0.3 x 2075. Use a calculator.

5 0

3 years ago

Read 2 more answers

I need help please help me!

MaRussiya [10]

Answer:

36ft³

Step-by-step explanation:

Bottom rectangular prism: 2x2x6=24

Top rectangular prism: 2x2x3=12

24+12=36ft³

6 0

4 years ago

Read 2 more answers

A spinner is spun 22 times. What is the experimental probability of spinning either a 5 or 6?

Nesterboy [21]

Answer:

quedarse corona abuelos pelear

6 0

3 years ago