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Alex_Xolod [135]
3 years ago
9

The radius of a circle is 8 kilometers. What is the length of a 45° arc?

Mathematics
1 answer:
Andru [333]3 years ago
4 0
45/360 × 8 squared pi = 25 kilometers
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Plz help me it worth 50% of my grade tell wethere it’s proportional of not
Julli [10]

Answer:

2) is not proportional, 3) is not proportional, 5) is proportional, 6) is not proportional.

Step-by-step explanation:

Number 2 is not proportional since it doesn't go through the origin on the graph and the line is not a straight line.

Number 3 does not go through the origin, so number 3 is also not proportional.

Number 5 is proportional since when you divide y by x, it is always 7.

Number 6 is not proportional because when you divide y by x or x by y there are not the same answers.

5 0
2 years ago
Please help. <br><br> Solve 5x + 7 &gt; 17.
valentina_108 [34]

Answer:

\large\boxed{\{x\ |\ x>2\}}

Step-by-step explanation:

5x+7>17\qquad\text{subtract 7 from both sides}\\\\5x+7-7>17-7\\\\5x>10\qquad\text{divide both sides by 5}\\\\\dfrac{5x}{5}>\dfrac{10}{5}\\\\x>2

5 0
3 years ago
Read 2 more answers
The ____ is the horizontal distance between two points.
timama [110]

The length of line segment is the horizontal distance between two points

Suppose

a line has endpoints

  • (x-1,y1)
  • (x2,Y2)

The length of the line is

  • √(x_1-x_2)²+(y_1-y_2)²
6 0
2 years ago
Starting at noon, the temperature dropped steadily at a rate of 0.08 degrees Celsius every hour.
dangina [55]

Answer:

a. 55 hours

b. 1.9 degrees C

Step-by-step explanation:

This means for each hour the temperature drops 0.08. This is the expression 0.08x where x is number of hours.

a.) If the temperature has dropped 4.4, then 4.4 = 0.08x. Solving for x will give the number of hours it takes to drop 4.4.

4.4 = 0.08x

4.4 / 0.08 = x

55 = x

b.) If the temperature after 55 hours and dropping 4.4 is -2.5, then the temperature at the start would be -2.5 + 4.4 = 1.9. The temperature at noon was 1.9 degrees celsius.

6 0
3 years ago
Given f (x) = 6x + 2, find f (x + 3).
Dovator [93]

Answer:

6x+20

c.

Step-by-step explanation:

If f(x)=6x+2 and you are asked to find f(x+3), then you just replace all the x's in f(x)=6x+2 with (x+3).

Doing this gives you:

f(x)=6x+2        with new input (x+3) in place of out input (x)

f(x+3)=6(x+3)+2

f(x+3)=6x+18+2

f(x+3)=6x+20

3 0
4 years ago
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