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Stells [14]
3 years ago
11

A young boy is growing at a rate of 3 cm per month. He is currently 80 cm

Mathematics
2 answers:
kondaur [170]3 years ago
8 0
The answer is 40 months
Delvig [45]3 years ago
8 0

Answer:

14

Step-by-step explanation:

you need to subtract 80 from 122 to get 42 then divide it by three

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Mr. Gonzales is replacing a cylindrical air-conditioning duct. He estimates the radius of the duct by folding a ruler to form tw
GalinKa [24]

Answer:

  • <em><u>5.6875 in</u></em>

Explanation:

At the point of tangency, the <em>tangent </em>to a circle and the <em>radius</em> form a right triangle (the radius is perpendicular to the tangent).

Here you are given the length of the tangent (6in), and the distance from the bisected vertex to the circle (2.75 in)

I tried to upload the drawing but the tool is not allowing it now.

In the figure:

  • The length of the tangent (6 in) is one leg of the triangle
  • The distance from vertex and the circle (2.75in)  along with the radius forms the hypotenuse of the right triangle: 2.75 + r.
  • The other leg is the radius, r.

Then, you can use Pythagorean theorem:

  • (r)² + (6)² = (r +2.75)²

Solve:

  • r² + 36 =  r² + 5.5r + 7.5625
  • 5.5r = 36 - 7.5625
  • 5.5r = 28.4375
  • r = 5.6875

The solution is in inches: r = 5.6875 inches ← answer

4 0
3 years ago
Solve The Equation, Check Your Answer 15=7x+1-5x
Morgarella [4.7K]
15=7x+1-5x


Put like terms together. ( group anything alike)

15+1=16

7x-5x=2x

16 2x
—- ——-
2x 2x


2x/2x cancels itself out.

16 divided by 2 is 8

x=8

I hope this helped!
5 0
3 years ago
Read 2 more answers
Write the expression as a product.<br> 25-(a + 7)^2
Nastasia [14]

25 -  ({a + 7})^{2}  =

(5 + (a + 7))(5 - (a + 7)) =

(a + 12)( - a - 2)

Have a great day ♡

6 0
2 years ago
Read 2 more answers
PLEASE HELP!!!!
tresset_1 [31]

Answer:

D

Step-by-step explanation:

y_2 - y_1 / x_2 - x _1

4 - 2 / 3 - (-1) = 2/4 = 1/2

y +4 = 1/2 (x + 3) distributive property

y + 4 = 1/2x + 1.5

y= 1/2x - 5/2 subtraction (you subtract 4 from both sides) (-5/2 = -2.5)

therefore your equation is y = 1/2x - 5/2

hope this helps :)

7 0
3 years ago
The figure shows a rectangle with a width of 6k inches. The length of the rectangle is 4 inches shorter than the width.
Aliun [14]

Step-by-step explanation:

b. what is the perimeter of the rectangle in terms of k?

4 0
3 years ago
Read 2 more answers
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