Plzzzzzz help me i am timed

Calculate an estimate for the mean temperature

disa [49]

The temperature was in the range of 10-13 on 7 of the days.
Give it the weight of the middle of the range = 11.5 for 7 times = 80.5

The temperature was in the range of 14-17 on 9 of the days.
Give it the weight of the middle of the range = 15.5 for 9 times = 139.5

The temperature was in the range of 18-21 on 16 of the days.
Give it the weight of the middle of the range = 19.5 for 16 times = 312

The temperature was in the range of 22-25 on 22 of the days.
Give it the weight of the middle of the range = 23.5 for 22 times = 517

The temperature was in the range of 26-29 on 6 of the days.
Give it the weight of the middle of the range = 27.5 for 6 times = 165

Total weight for all ranges = (80.5 + 139.5 + 312 + 517 + 165) = 1,214

Total number of days = 60

Estimated mean temperature = (1,214) / (60) = 20.23°C 

3 0

4 years ago

The formula for finding the length of an arc on a circle is L=2πr(x360) , where r is the radius of the circle and x is the measu

horrorfan [7]

The formula for length of an arc on a circle is given by the formula:

$L = \frac{2 \pi rx}{360}$ ,

where 'r' is the radius of the circle and 'x' is the measure of the central angle of the arc.

We have to determine the value of radius 'r'.

Since, $L = \frac{2 \pi rx}{360}$

By Cross multiplication, we get

$360 \times L = 2 \pi rx$

$\frac{360 \times L}{ 2 \pi x} =r$

$\frac{180 \times L}{ \pi x} =r$

$r = \frac{180L}{ \pi x}$

Therefore, the radius 'r' is given by $r = \frac{180L}{ \pi x}$ .

Option 4 is the correct answer.

6 0

3 years ago

Read 2 more answers

Which one doesn’t belong with the other three? Explain your reasoning plz plz answer #3

Ahat [919]

The box provides some examples of how exponents can be used to shorten repeated multiplication. The first, third, and fourth boxes all show how the repeated multiplication of 2, 3, and 5 can all be abbreviated as $2^4, 3^2$ and $5^3$ . The only expression which doesn't belong is $3+3+3+3=3(4)$ , because it's showing how repeated addition can be shortened to multiplication.