3 years ago

HELP NOW PLZ/////////

Mathematics

1 answer:

kvasek [131]3 years ago

6 0

Answer:

uh idk

Step-by-step explanation:

sorry

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After stepping into a room with unusual lighting, Michelle's pupil has a diameter of 8 millimeters. What is the pupil's circumfe

RideAnS [48]

2 x Pi x Radius I think?

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4 years ago

If f(x)= 20-3x, then find a if f(a)= -11.

Basile [38]

Answer:

Step-by-step explanation:

if f(a)= -11 the the equation is: 20-3(-11)

First, multiply -3 and -11:

20-3×(-11)

20+33

Now, add:

20+33= 53

Hope this helps!! <3

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3 years ago

When a 40-foot pole casts a shadow of

Semenov [28]

Set up a ratio with height over shadow height:

40/30 = x/15

Cross multiply:

40 x 15 = 30x

600 = 30x

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The tree is 20 feet tall.

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3 years ago

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Find the total area of the prism. 144 sq. in. 576 sq. in. 864 sq. in.

anastassius [24]

Answer:

$864\ in^{2}$

Step-by-step explanation:

The figure is a cube

The surface area of a cube is equal to

$S=6b^{2}$

where

b is the length side of the cube

In this problem we have

$b=12\ in$

substitute

$S=6(12^{2})=864\ in^{2}$

7 0

4 years ago

the sum of three numbers is 207. the second number is 8 times the first, while the third is 3 less than the first, find the numb

pentagon [3]

First number = X
Second number = 8X
Third number = X - 3

The equation would be
X + (8X) + (X - 3) = 207

X + (8X) + (X - 3) = 207

X + 8X + X - 3 = 207

10X - 3 = 207

10X = 207 + 3

10X = 210

X = 21

First number = 21
Second number = 8 * 21 = 168
Third number = 21 - 3 = 18

3 0

4 years ago