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Mrac [35]
4 years ago
5

For a trapezoid, the following formula relates the area a, the two bases a and b, and the height h. a= g (a

Mathematics
1 answer:
Dovator [93]4 years ago
5 0
A - area of a trapezoid;
a, b - two bases.
A = h * ( a + b ) / 2            / * 2  ( we have to multiply both sides by 2 )
2 A = h *( a + b )
2 A = h a + h b
h b = 2 A - h a
b = ( 2 A - h a ) / h
b = 2 A/h - a
Answer: D )
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How do I find the answer to this polynomial question fg-5g+4f-20
Leviafan [203]
Factor
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7 0
3 years ago
Alex and hope were trying to solve -6x > 24. Whose inequality shows the solution? Show your work.
SashulF [63]

Answer:

x>-4

Step-by-step explanation:

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8 0
3 years ago
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5 0
3 years ago
13pts HELP!
Sonja [21]

Answer:

The speed of the car is 42 miles per hour

Step-by-step explanation:

Step 1:

(Blank) x s = (Blank)

Let us evaluate this. Something times s miles per hour is going to gives us? 126 miles. So, our second blank would be 126 since that's our total:

(Blank) x s = 126

Step 2:

On the other hand, our first blank would be 3. Why? Because that's the amount of time it takes us to go 126 multiplied by s miles per hour; Our new equation is:

3 x s = 126

Step 3:

We can simplify this equation to:

3s = 126

Step 4:

We now have a one step equation. Divide each side by 3 to get s by itself.

\frac{3s}{3} =\frac{126}{3}

Step 5:

We end up getting:

s = 42

That means that the car is traveling at 42 miles per hour. If the car continues at that rate for 3 hours, the car would have traveled 126 miles.

Hope this helps!

7 0
3 years ago
Read 2 more answers
Someone help me plz!!!<br> It’s algebra
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Answer:

Step-by-step explanation:

c.

a(x)=x^3-3\\b(x)=2x+1\\c(x)=\frac{3}{x+2} \\d(x)=4-x\\a.\\a(4)=4^3-3=64-3=61\\b.\\\\c(x-5)=\frac{3}{x-5+2} =\frac{3}{x-3} \\c.\\d(-1)=4-(-1)=4+1=5\\b(d(-1))=b(5)=2(5)+1=11\\\\d.\\(coa)(2)=c(a(2))=c(2^3-3)=c(8-3)=c(5)=\frac{3}{5+2} =\frac{3}{7}

7 0
3 years ago
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