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olga55 [171]
2 years ago
6

Arc length, radius & central angels(deg. & rad)

Mathematics
1 answer:
n200080 [17]2 years ago
7 0

Answer:

x = 1.6  rads

Step-by-step explanation:

                                  <u>In radian format</u>:

Length of arc =  x r ..........where x is the angle and r is radius.

Here the length of arc is 14 inches and radius given 9 inches

  using the formula:

  • xr = 14

  • x(9) = 14

  • x = \frac{14}{9}

  • x = 1.6 rads
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Suppose y varies inversely with x. Write an equation if y=7 when x=-4
luda_lava [24]

Answer:

y = -28 ÷ x

Step-by-step explanation:

The standard format of a inversely proportional equation goes by the format of y = k ÷ x. The question asks us to write an equation if y = 7 when x = -4 and y varies inversely with x.

So we substitute the values y = 7 and x = -4 in the equation y = k ÷ x

K = constant, we have to work this out

7 = k ÷ -4

7 × - 4 = k

k = - 4 × 7

k = -28

k = -28 So then we put this back into the original y = k ÷ x to find our final equation which is y = -28 ÷ x

3 0
3 years ago
Solve for X<br> 3(x + 7) &lt; 7(x + 2)
Furkat [3]

Answer:

x > 7/4

Step-by-step explanation:

3(x + 7) < 7(x + 2)

Expand brackets:                 3x + 21 < 7x + 14

Subtract 14 from both sides:  3x +7 < 7x

Subtract 3x from both sides:         7 < 4x

Divide both sides by 4:              7/4 < x

Therefore x > 7/4

5 0
2 years ago
Read 2 more answers
What is the value of the expression 5x2 + 2x when x = 5?
masha68 [24]

Answer:

135

Step-by-step explanation:

Given:

x = 5

To determine a numerical value for the expression, simply substitute the value of "x" into the expression and simplify the expression, if necessary, to determine a specific number for the expression provided.

  • \implies 5x^{2}  + 2x
  • \implies 5(5)^{2}  + 2(5) \longrightarrow \longrightarrow \longrightarrow (x = 5)
  • \implies 5(5)(5)  + 2(5)
  • \implies 125  + 10
  • \implies 135

Therefore, the value of the expression 5x^{2}  + 2x when x = 5 is 135.

Learn more about this topic: brainly.com/question/27675691

7 0
2 years ago
In the figure below, \overline{EO}=2x-5 <br> EO<br> =2x−5 and \overline{MO}=x+17 <br> MO<br> =x+17
jonny [76]

Answer: x = 69

Step-by-step explanation:

4 0
3 years ago
8x10 with the power of 0
Tpy6a [65]

Since you gave no parenthesis: Remember to follow PEMDAS. Note that anything with the power of 0, the answer will become 1

10^0 = 1

8 x 1 = 8

8 is your answer

hope this helps

7 0
3 years ago
Read 2 more answers
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