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3 years ago

6

The number m satisfies the relationship m<0. Write an inequality expressing the relationship between -m and 0. Explain your r

easoning.

1 answer:

Yakvenalex [24]3 years ago

4 0

Well one relaship is they compared for this problem instead of actually showing how they know

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Solve the following system of equations for a and for b:

viktelen [127]

Answer:

$a=3\\b=1$

Step-by-step explanation:

$9a+3b=30\\8a+4b=28$

Let's solve the second equation for a to later on replace it in the first equation.

$8a+4b=28\\8a=28-4b\\a=\frac{28-4b}{8}$

Now plug this into the first equation.

$9a+3b=30\\9(\frac{28-4b}{8})+3b=30$

Distribute the 9

$(\frac{252-36b}{8}) +3b=30$

Break down the fraction.

$\frac{252}{8}-\frac{36b}{8}+3b=30$

Simplify.

$\frac{63}{2}-\frac{9}{2}b+3b=30$

Subtract $\frac{63}{2}$

$-\frac{9}{2}b+3b=30-\frac{63}{2}$

Combine like terms.

$\frac{-9+2*3}{2}b=\frac{30*2-63}{2}$

$\frac{-9+6}{2}b=\frac{60-63}{2}$

$\frac{-3}{2}b=\frac{-3}{2}$

Muliply by the reciprocal or inverted fraction next to b.

$(-\frac{2}{3})(-\frac{3}{2}) b=-\frac{3}{2}(-\frac{2}{3})$

$b=1$

Now plug this value into any of the equations to find the value of a.

$8a+4b=28\\8a+4(1)=28\\8a+4=28\\8a=28-4\\8a=24\\a=\frac{24}{8}\\ a=3$

5 0

3 years ago

Which describes an isometric transformation? dilation/ rotation/ side length change/ angle change

Westkost [7]

Answer:

rotation

Step-by-step explanation:

"Isometric" means all measures stay the same.

dilation changes all lengths
<em>rotation changes no measures -- an isometric transformation</em>
side length change obviously changes the length of a side
angle change obviously changes the measure of an angle

7 0

3 years ago

Please Help!!!!!!!!!

marissa [1.9K]

124 square units
you just have to count the top, bottom, and a side and times by 2

4 0

3 years ago

On a map, 1 inch equals 20 miles. Two cities are 8 inches apart on the map. What is the actual distance between the cities?

8_murik_8 [283]

If 1 inch equals 20miles then 8 inches equals 20 x 8 = 160 miles.

6 0

3 years ago

Read 2 more answers

A line passes through the two given points. Is it vertical, horizontal,or neither?<br>(8,3), (8,-4)

Katena32 [7]

Answer:

horizontal.

Step-by-step explanation:

it goes straight up

5 0

3 years ago