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zhuklara [117]
3 years ago
11

Find the area of the polygon.

Mathematics
1 answer:
jolli1 [7]3 years ago
3 0

Answer:

7. 15.5

8. 12

Step-by-step explanation:

Question 7 equation: \frac{3*1}{2} + \frac{5+2}{2} * 4=1.5 + 3.5 * 4 = 1.5 + 14 = 15.5.

Question 8 equation: (\frac{2*2}{2} * 2) + (\frac{4*2}{2} *2) = 4 + 8 = 12.

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If the radius of a circle is 10 feet, how long is the arc subtended by an angle measuring 81°?
Advocard [28]
81 degrees
1 degree = 2 pi / 360
81 degrees = 162 pi / 360
=9 pi / 20

L (arc) = radius x angle
= 10 x 9 pi / 20
90 pi /20
9/2 pi : D

The answer is D
7 0
3 years ago
Read 2 more answers
Which interval for the graphed function has a local
Alex

Answer:

Interval for the function has local minimum of 0 is [2,4].

Step-by-step explanation:

You need to find the local minimum of 0 in the given function's graph.

In mathematics, local minimum is a point on a graph whose value is less than all other points near it.

See that, graph value 0 is lie on the x = 3 and in interval x = 2 to x = 4

So, final answer is :

Interval for the function has local minimum of 0 is [2,4].That's the final answer.

hope it helps

5 0
3 years ago
Simplify -5(20 + 3).
sammy [17]
Whenever a number is beside a parenthesis without a sign it means multiplication. So you would use PEMDAS work in parenthesis then exponents, multiplication (from left to right) addition and subtraction (from left to right). so you would add 20+3 and get 23 then multiply that by -5 to get -115 as your answer.
4 0
3 years ago
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what are the steps to answer this question? Jeff is baking a cake. The recipe says that he has to mix 32 grams of powder to the
Deffense [45]
Well what I would do first is to divide 128 by 32 which I do believe gets you 4. So now you know that 1 cup of powder can make 4 servings. So you now know that each serving only requires 1/4 cup of the powder.

So now we know Jeff went over so now we have Jeff added 2/3 and he only needs 1/4. I would now make them both equivalent by multiplying the numerator and denominator of 2/3 by 4 and the same for 1/4 but instead by 4 multiply it by 3 which you would get 2/3=8/12 and 1/4=3/12. Now subtract the two to get your answer.

8/12-3/12=5/12

Answer: He went over and he needs to remove 5/12 of the cup
5 0
3 years ago
What is the circumfrenice of a diamiter of 7 inches
KIM [24]

Answer:

22 in

Step-by-step explanation:

<u>circumference of a circle = 2 π r</u>

where radius (r) = 7/2 in. = 3.5 in

C = 2 π (3.5)

   = 22 in

6 0
3 years ago
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