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3 years ago

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The equation a = StartFraction one-half EndFraction left-parenthesis b 1 plus b 1 right-parenthesis.(b1 + b2)h can be used to de

termine the area, a, of a trapezoid with height, h, and base lengths, b1 and b2. Which are equivalent equations? Check all that apply.

2 answers:

snow_lady [41]3 years ago

6 0

The answer is a thank you

Anuta_ua [19.1K]3 years ago

3 0

Answer:

Its A and D

Step-by-step explanation:

i just took the test

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3 1/2-2 5/9 subtract. Simplify if needed.

saw5 [17]

3 1/2-2 5/9= 0.94444444444

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Solve the equation. plesse help.

Shtirlitz [24]

X = 2. 11 to the 4th power (2(2)) is equal to 14641.

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Triangles EFG and QRS are similar. The lengths of the sides of EFG are 72, 64, and 56. The length of the smallest side of QRS is

blsea [12.9K]

Answer:

$180\ units$

Step-by-step explanation:

we know that

If triangles EFG and QRS are similar

then

the scale factor is equal to the measure of the smallest side of triangle QRS divided by the smallest side of triangle EFG

so

Let

x-------> the smallest side of triangle QRS

y-------> the smallest side of triangle EFG

z-------> the scale factor

we have

$x=140\ units, y=56\ units$

substitute the values

$z=\frac{140}{56}$

$z=2.5$

Find the length of the longest side of QRS

The length of the longest side of QRS is equal to multiply the scale factor by the length of the longest side of EFG

so

$2.5*72=180\ units$

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3 years ago

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The angle of elevation of the top of a tower from a point 42 metres away from it's base on level ground is 26 degrees. find the

Hatshy [7]

Answer:

20.485 Meters

Step-by-step explanation:

So first you wanna draw a diagram. Start with the tower, then on the ground to the left (or right) draw a point. The point will be labeled as 42 m away from the tower. Now draw a line from that point to the top of the tower. This makes your triangle, and that angle you just drew that touches the point is 26 degrees.

Now, since you have a right triangle you can use trig. You know an angle and a side. Specifically, relative to the 26 degree angle you know the adjacent angle and want the opposite, which is the tower. So opposite and adjacent is tangent. So you set up tan(26) = o/42 where o is the opposite side.

So solving you get o = 20.485 meters

3 0

3 years ago

please help I am really stuck on this one!! I would like an explanation with the answer please so I can learn how to do it from

dexar [7]

ANSWER:

x° = 24°

y° = 72°

Analysis on picture hope it helps

4 0

3 years ago