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3 years ago

Area of a trapezoid 5yd, 8yd, 11yd 9yd

1 answer:

8 0

Answer: How to find the area of a trapezoid is that you multiply and add (5*8) + (11*9) if done right you should get 40 + 99 which is 139.

Step-by-step explanation:

Another tip to find the area is to follow the formula A = bh.

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Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅?

Tom [10]

Answer: Option C is correct

Step-by-step explanation:

We know tha tCos(A-B) = cosA cosB + sinAsinB

Plugging A = 180 and B = Ф

cos(180-Ф)= cos180cosФ+sin180sinФ

= (-1) cosФ+ (0) sinФ [ since cos180=-1 and sin180 =0]

= -cosФ + 0

= -cosФ

Therefore option C is the correct answer.

6 0

3 years ago

Read 2 more answers

I think of a number, multiply it by 3, and add 2; the total is 32. Which expression represents this?

Softa [21]

3x+2=32 and x=10 just if you're wondering.

4 0

3 years ago

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Evaluate the expression: (1/3)⁴ = ?

vlabodo [156]

Answer:

1/81

Step-by-step explanation:

$\frac{1*1*1*1}{3*3*3*3}$ multiply them

hope this helps :/

5 0

3 years ago

Read 2 more answers

In an expression (8/9) squared (-81)+3/5dividedby-9/10

Nitella [24]

If you wanted to calculate it, there it is:
$(\frac{8}{9})^2 (-81)+\frac{\frac{3}{5}}{\frac{-9}{10}} = \frac{64}{81}*(-81)+\frac{3}{5}*\frac{10}{-9} = -64+\frac{-2}{3}= \\ =-64-\frac{2}{3}=\frac{-192-2}{3}=\frac{-194}{3}$

6 0

3 years ago

Read 2 more answers

115% of what number is 120

malfutka [58]

115% is the same as 1.15
some number = x

115% of some number is 120
1.15 of x is 120
1.15 * x = 120

x = 104.3478
x ≈ 104.3

7 0

3 years ago