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Virty [35]
3 years ago
11

A tree casts a shadow that is 125 ft. At the same time, a 4ft tall person

Mathematics
1 answer:
jekas [21]3 years ago
6 0

Answer:

100ft

Step-by-step explanation:

H over S

H over 125 then 4 over 5

cross Multiply would give you

5H = 500

500 ÷ 5 is 100

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Pleaseee help!
user100 [1]

Step-by-step explanation:

f(3)=?

f(x)=2x+5

put x=3,

f(3)=2(3)+5=6+5=11

------------

g(2)=?

g(x)=x^2-3

put x=2,

g(2)=2^2-3=4-3=1

-----------------

g(f(-1))=?

g(x)=x^2-3

and f(-1)=2(-1)+5= -2+5=3

so g(f(-1))=3^2-3=9-3=6

----------------

f(g(-1))=?

f(x)=2x+5

g(x)=g(-1)=(-1)^2-3=1-3= -2

f(g(-1))=2(-2)+5= -4+5=1

----------------

g(f(x))=?

g(x)= x^2-3

put x=f(x),

g(f(x))=f(x)^2-3=(2x+5)^2-3=4x+25+20x-3=24x+25

7 0
3 years ago
Find the volume of a pyramid with a square base, where the perimeter of the base is
grigory [225]

Answer:

90.3125 cm³

Step-by-step explanation:

Since the perimeter of the bottom square is 17, you can divide by four to find out what the lenght of each side is.

17/4=4.25 cm

We know the height of pyramid is 15 cm

The formula for the volume of a square pyramid is

V=a²(h/3)

V=a2(h/3)=4.252·15/3=90.3125 cm³

8 0
3 years ago
If the average of x and y is 11 and the average of x, and y z is 5 what is the value of z
qwelly [4]

If the average of x and y is 11 and the average of x, y and z is 5, then the value of z is -7

Given,

The average of x and y = 11

We know average = Sum of the terms / Number of terms

Then, the equation will become

\frac{x+y}{2}=11
x+y =11×2

x+y =22

Average of x, y and z = 5

\frac{x+y+z}{3}=5

x+y+z = 5×3

x+y+z =15

Substitute the value of x+y

22+z=15

z =15-22

x = -7

Hence, If the average of x and y is 11 and the average of x, y and z is 5, then the value of z is -7

Learn more about average here

brainly.com/question/12984400

#SPJ4

6 0
1 year ago
What is the circumference of a circle with area 50cm2. Give your answer to three significant figures.
Mnenie [13.5K]

Answer:

c = 25.1

Step-by-step explanation:

C = 2\sqrt{pi A}

C = 2 \sqrt{3.14 * 50 }

C = 25.1

Mark me brainly plz

7 0
3 years ago
S 8. a ES a) There are 40 students in a class and 16 of them are girls. (i) Find the ratio of the girls and the total number of
umka21 [38]

Answer:

The ratio for the boys is 24:40 and the girls is 16:40 so the girls and boys is 16:24

Step-by-step explanation:

7 0
2 years ago
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