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MrMuchimi
3 years ago
8

Please help answer questions

Mathematics
1 answer:
Elena-2011 [213]3 years ago
6 0

Answer:

Step-by-step explanation:

For a x= 21

b) x= -20

c) x=5

D)x<5

e)x>8 you have to put w\variables on one side and numbber on the other side in algebra hope it helps!

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Value of ratio 3/4 to 2
MrMuchimi

Answer:

3/8 or 0.375

Step-by-step explanation:

0.75/2 = 3/8

4 0
3 years ago
What is the distance between point C and point D?
e-lub [12.9K]

Answer:

B. 13 units

Step-by-step explanation:

let

(x1 , y1) = (-4 , -6)

(x2 , y2) = (1 , 6)

distance between CD = root (x2 - x1)^3 + (y2 - y1)

= root {1 - ( -4)}^2 + {6 - ( -6)}^2

= root {1 +4}^2 + {6+6}^2

= root 5^2 + 12^2

= root 25 + 144

= root 169

= 13 units ans

6 0
3 years ago
Read 2 more answers
Which equation can be used to find the volume of this solid?
Sophie [7]

Answer:

You would use V=3 times 5 times 4

First you would multipy 5 times 4 then when you get that answer you would multiply the 3.

4 0
3 years ago
Can someone help me??
natta225 [31]
0.12 x 0.1 = 0.012  I think
4 0
3 years ago
A helicopter hovers at an altitude that is 1000 feet above a mountain of altitude 5210 feet. A second, taller peak is viewed fro
ehidna [41]
Given: 

Height of Mountain A = 5210 feet
Distance of Mountain A from a helicopter above the peak = 1000 feet
Angle of depression:
       Mountain B to helicopter = 43 degrees
       Mountain B to Mountain A = 19 degrees
 
 First, draw an illustration and label the enumerated given values.

Observe that there are two right triangles formed:

From the triangle formed by the helicopter and Mountain B, 

let x = total height of mountain B
     y = leg of first triangle (helicopter and mountain b)
     h = hypotenuse
Use the Pythagorean Theorem:

cos (43) = y / h

From the second triangle formed by mountain b and a,

cos (19) = (1000 + y) / h

solve for h and y

then, solve for the height of Mountain B:

x = 1000 + y + 5210
6 0
3 years ago
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