All categories

3 years ago

It’s in the picture I need help with it I can’t do word problems

Mathematics

1 answer:

Fynjy0 [20]3 years ago

3 0

let hourly rate = r

then over 30 rate would be 1.4r

30r + 5(1.4r) = 436.60

30r + 7r = 436.60

37r = 436.60

r = 436.60/37 = 11.80

his hourly rate is $11.80

You might be interested in

Which polar coordinates represent the same point as (4, −π/2)

marin [14]

You can go full 2π rotate around counterclockwise so the angle wouldn't be negative.

So -π/2 + 2π = -π/2 + 4π/2 = 3π/2

So (4, 3π/2) is the same point as (4, -π/2)

7 0

3 years ago

The random variable K has a geometric distribution with mean 16. Which of the following is closest to the standard deviation of

sdas [7]

Answer: d. 15.49

Step-by-step explanation:

Given : The random variable K has a geometric distribution with mean 16.

Formula for Mean and standard deviation in geometric distribution:

$\mu=\dfrac{1}{p}$ (1)

$\sigma=\dfrac{\sqrt{1-p}}{p}$ (2), where p is the probability of success in each trial.

Since $\mu=16$ (Given)

Then from (1) ,

$\dfrac{1}{p}=16\\\Rightarrow\ p=\dfrac{1}{16}=0.0625$

Put value of p in (2),

$\sigma=\dfrac{\sqrt{1-0.0625}}{0.0625}=\dfrac{\sqrt{0.9375}}{0.0625}$

$=\dfrac{0.968245836552}{0.0625}$

$=15.4919333848\approx15.49$

Hence, the standard deviation of random variable K is closest to 15.49.

Therefore , the correct answer is d. 15.49 .

6 0

3 years ago

Pamela drove her car 99 kilometers on 9 liters of fuel.

Andreyy89

Answer: 132 Liters

Step-by-step explanation:

Ap ex

7 0

3 years ago

Write the equations for 74,25a n d 49

schepotkina [342]

7425 ? 49
and = + in math
74250 + 49

8 0

4 years ago

Read 2 more answers

Please help it’s due today !

Strike441 [17]

Answer:

x = -7

Step-by-step explanation:

-7(?)=49

negative times a negative is a positive

7×7=49

-7×-7=49

8 0

3 years ago