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3 years ago

Solve: 4(-6) = -9(5) = -1.5(-7) =

Mathematics

1 answer:

trasher [3.6K]3 years ago

3 0

Answer:

Step-by-step explanation:

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Simplify the following expression.

OverLord2011 [107]

Answer:

Step-by-step explanation:

Evaluate the power:

Reduce:

Then simplify:

3h^4b^4/6h^5b

B^4/2hb

Simplify expression:

b^3/2h

I hope this helped, and I didn’t confused you. Good luck!

4 0

3 years ago

Write 450 miles per 18 gallons as a unit rate (miles per gallon)

fenix001 [56]

Multiply them together

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3 years ago

Find the solutions for 5x+3y=30 and 3x+6y=12<br> FAST PLS i will mark !!!!!

Art [367]

Answer:

$x=\frac{48}{7}\\ y=-\frac{10}{7}$

Step-by-step explanation:

$5x+3y=30\\3x+6y=12$

Let's solve the second equation for x

$3x+6y=12\\3x=12-6y\\x=\frac{12-6y}{3}$

Now let's replace this in the first equation.

$5x+3y=30\\5(\frac{12-6y}{3})+3y=30$

Distribute the 5

$\frac{60-30y}{3}+3y=30$

Individually solve the fractions.

$\frac{60}{3}-\frac{30}{3}y+3y=30$

Solve;

$20-10y+3y=30\\20-7y=30$

Subtract 20 from both sides.

$20-20-7y=30-20\\-7y=10$

Divide both sides by -7

$\frac{-7y}{-7}=\frac{10}{-7}$

$y=-\frac{10}{7}$

Now replace the value of y in any of the two equations to find x.

$3x+6y=12\\3x+6(-\frac{10}{7})=12$

$3x-\frac{60}{7}=12\\$

add $\frac{60}{7}$ on both sides.

$3x-\frac{60}{7}+\frac{60}{7} =12+\frac{60}{7}$

$3x=\frac{(12)(7)+60}{7}$

$3x=\frac{84+60}{7}\\ 3x=\frac{144}{7}$

Multiply by the reciprocal fraction of 3. I suppose you know that 3 is 3/1 hence the inverted fraction would be 1/3

$(\frac{1}{3})(3x)=(\frac{144}{7})(\frac{1}{3})$

$x=\frac{48}{7}$

5 0

4 years ago

Solve for a in the diagram below.

Tresset [83]

Answer:

Step-by-step explanation:

We can tell from the little square in the corner that this is a 90 degree angle, so all three of the expressions of x should add up to 90:

x + 2x + (x + 10) = 90

Combine like terms:

4x + 10 = 90

4x = 80

Divide by 4:

x = 80/4 = 20

The answer is 20.

Hope this helps!

7 0

4 years ago

Read 2 more answers

Which of the following is an arithmetic sequence?

leonid [27]

Answer:

Step-by-step explanation:

because it has a varying and uniform difference of -3

4 0

3 years ago