Which measure is not the area of a circle with radius 20 mm?

Answers

Answer 1

Answer: Given:
radius = 20 mm

Area of a circle = π r²
A = 3.14 * (20mm)²
A = 3.14 * 400mm²
A = 1,256 mm²

400mm² ; 628.57mm² ; and mm² ARE NOT THE AREA OF A CIRCLE

Answer 2

Answer:

Answer:

thx for the answer

Step-by-step explanation:

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How many pairs of intersecting line segment does a square have

Answers

it has four intersecting line segments lol

Evaluate and simplify cos 2pi/3. The options for answers are in the picture attachment, but I have NO idea how to get any of them? Please, Any help is appreciated (:

Answers

when pi is inside the trigonometric function you can subs. it by 180 degree
so cos(2*180/3) = cos(120) = -0.5

The sum of two numbers is 30 & their difference is 12.

Answers

x+y=30
x-y=12
add them together

x+y=30
x-y=12+
2x+0y=42

2x=42
divide 2
x=21

subsitute
x+y=30
21+y=30
subtrat 21
y=9

number sare 21 and 9

The answer is 21 and 9. You can use guess and check to solve this. If you add 21 and 9, the sum is 30, and if you subtract 9 from 21, the difference is 12.

Simplify.

–7 + 8 + 10 ÷ (–2)

Answers

BEDMAS says we do division first, then we can solve the rest:

–7 + 8 + (10 ÷ (–2))
-7 + 8 - 5
= - 4

Hope this helps!

Designer Dolls, Inc. found that the number N of dolls sold varies directly with their advertising budget A and inversely with the price P of each doll. The company sold 5200 dolls when $26,000 was spent on advertising and the price of a doll was set at $30. Determine the number of dolls sold when the amount spent on advertising is increased to $52,000. Round to the nearest whole number. Question 10 options: 3,447 dolls 10,400 dolls 5,200 dolls 1,723 dollsA.3,447 dolls
B.10,400 dolls
C.5,200 dolls
D.1,723 dolls

Answers

Direct variation: y = kx
Inverse variation: y = k/x

Using the information above about direct and inverse variation, we get this general equation.

N = kA/P

Now we use the given information to find the value of the constant, k.

5200 = k * 26,000/30

k = 6

Now we know k, so we can write the equation for this case.

N = 6A/P

A = 52,000

N = 6 * 52,000/30

N = 10,400

The angle of elevation from the bottom of a scenic gondola ride to the top of a mountain is 26. If the vertical distance from the bottom to the top the mountain is 725 feet and the gondola moves at a speed of 180 feet per minute how long does the ride last?

Answers

x - length of the ride
x = 725 : sin 26° = 725 : 0.4384
x = 1653.74 feet
v = 180 feet/min
t = x/v = 1653.74 feet :180 feet/ min = 9.3 min
Answer : The ride last 9 minutes and 18 seconds.

Answer:

1654 feet

Step-by-step explanation:

This is the answer

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