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3 years ago

Can someone explain how they get the answer.

Mathematics

2 answers:

frosja888 [35]3 years ago

6 0

Answer:

585°

Step-by-step explanation:

To convert from radians to degrees

• degree measure = radian measure × $\frac{180}{\pi }$ , hence

degree measure = $\frac{13\pi }{4}$ × $\frac{180}{\pi }$

Cancel the π on the numerator/denominator

= $\frac{13(180)}{4}$ = 585°

SSSSS [86.1K]3 years ago

3 0

Answer:

585°

Step-by-step explanation:

2 π = 360° = 180/pi

(13pi/4) x (180/pi)

(13/4) x (180/1)

(13/1) x (45/1)

585°

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Charlie runs at a speed of 3 yd./s about how many miles per hour does Charlie run

vagabundo [1.1K]

1 hour = 3600 seconds

3 × 3600 = 10800

<span>10800 yards per hour
</span>
1 mile = 1760 yards

10800 ÷ 1760 = 6.13

6.13 miles per hour

4 0

3 years ago

Of all of the individuals who develop a certain rash, suppose the mean recovery time for individuals who do not use any form of

VashaNatasha [74]

Answer:

z(s) is in the rejection region. We reject H₀. We dont have enought evidence to support that the cream has effect over the recovery time

Step-by-step explanation:

Sample information:

Size n = 100

mean x = 28,5

Population information

μ₀ = 30

Standard deviation σ = 8

Test Hypothesis

Null Hypothesis H₀ x = μ₀

Alternative Hypothesis Hₐ x < μ₀

We assume CI = 95 % then α = 5 % α = 0,05

As the alternative hypothesis suggest we should develop a one tail-test on the left ( we need to find out if the cream have any effect on the rash), effects on the rash could be measured as days of recovery

A z(c) for 0,05 from z-table is: z(c) = - 1,64

z(s) = ( x - μ₀ ) / σ/√n

z(s) = ( 28,5 - 30 ) / 8/√100

z(s) = - 1,5 * 10 / 8

z(s) = - 1,875

Comparing z(s) and z(c)

|z(s)| < |z(c)| 1,875 > 1,64

z(s) is in the rejection region. We reject H₀. We dont have enought evidence to support that the cream has effect over the recovery time

3 0

3 years ago

Joe's annual income has been increasing each year by the same dollar amount. The first year his income was $17 comma 90017,900

Vedmedyk [2.9K]

Answer:

In 17th year, his income was $30,700.

Step-by-step explanation:

It is given that the income has been increasing each year by the same dollar amount. It means it is linear function.

Income in first year = $17,900

Income in 4th year = $20,300

Let y be the income at x year.

It means the line passes through the point (1,17900) and (4,20300).

If a line passes through two points $(x_1,y_1)$ and $(x_2,y_2)$ , then the equation of line is

$y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

The equation of line is

$y-17900=\frac{20300-17900}{4-1}(x-1)$

$y-17900=\frac{2400}{3}(x-1)$

$y-17900=800(x-1)$

$y-17900=800x-800$

Add 17900 on both sides.

$y=800x-800+17900$

$y=800x+17100$

The income equation is y=800x+17100.

Substitute y=30,700 in the above equation.

$30700=800x+17100$

Subtract 17100 from both sides.

$30700-17100=800x$

$13600=800x$

Divide both sides by 800.

$\frac{13600}{800}=x$

$17=x$

Therefore, in 17th year his income was $30,700.

5 0

3 years ago

I need to know the answer to 1,847,304,738 divided by 3

schepotkina [342]

Answer:

615,768,246

Step-by-step explanation:

If u divide 1847304738÷3 you get that.

3 0

3 years ago

Can someone help please

11Alexandr11 [23.1K]

I get it now!!!!
After some reasearch, I believe the answer is ~q --> p
Can I get brainliest answer pls????

4 0

3 years ago