How do i solve this problem

Mathematics

1 answer:

xeze [42]3 years ago

6 0

Split the figure into a trapezoid and a triangle

Area of trapezoid = 1/2(b1+b2) h
= 1/2(2 +6) * 4
= 2(8)
= 16 in^2

Area of triangle = 1/2 bh
= 1/2(6)(3)
= 9 in^2

Area of figure = Area of trapezoid + Area of triangle
= 16 in^2 + 9 in^2
= 25 in^2

Answer:
C. 25 square inches

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Please help with #12

ExtremeBDS [4]

Answer:

a. 1 1/8 b. 8/9

Step-by-step explanation:

You can set this up as a proportion to solve. For part a. we know that 2/3 of the road is 3/4 mile long. 2/3 + 1/3 = the whole road, so we need how many miles of the road is 1/3 its length. Set up the proportion like this:

$\frac{\frac{2}{3} }{\frac{3}{4} } =\frac{\frac{1}{3} }{x}$

Cross multiplying gives you:

$\frac{2}{3}x=\frac{1}{3}*\frac{3}{4}$

The 3's on the right cancel out nicely, leaving you with

$\frac{2}{3}x=\frac{1}{4}$

To solve for x, multiply both sides by 3/2:

$\frac{3}{2}*\frac{2}{3}x=\frac{1}{4}*\frac{3}{2}$ gives you

$x=\frac{3}{8}$

That means that the road is still missing 3/8 of a mile til it's finished. The length of the road is found by adding the 3/4 to the 3/8:

$\frac{3}{4}+\frac{3}{8}=\frac{6}{8}+\frac{3}{8}=\frac{9}{8}$

So the road is a total of 1 1/8 miles long.

For b. we need to find out how much of 1 1/8 is 1 mile:

1 mile = x * 9/8 and

x = 8/9. When 1 mile of the road is completed, that is 8/9 of the total length of the road completed.

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Jenny spins a fair 4-sided spinner what is the probabiliity that the spinner will land on a or b

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Suppose that to make the golf team you need to score no more than 74 on average over 5 games. If you scored 77, 71, 77, and 67 i

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The temperature in Minneapolis was -9°F. The next day, the temperature was warmer than -9°F.

Dimas [21]

Answer:

The temperature in Minneapolis was -9°F. The next day, the temperature was warmer than -9°F.

let increased temperature be x

temperature of next day = -9°f +x