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3 years ago

13

Last year Betty's annual salary was $42000. This year she received a raise and now eams $46500. On a weekly basis, how much more

does Betty earn?

1 answer:

bearhunter [10]3 years ago

3 0

Answer:

About 87$

Step-by-step explanation:

Yu take both salary amounts an divide by 52 since there are 52 weeks in a year and then find the difference between them

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Nina has $245 in 5-dollar bills and 10-dollar bills. She has ten more 5-dollar bills than 10-dollar bills. How many of each type

Oksana_A [137]

Answer:

Number of 5 dollar bills = 23

Number of 10 dollar bills = 13

Step-by-step explanation:

Let number of 5 dollar bills be x

and the number of 10 dollar bills be y

Total $245, means we can write:

5x + 10y = 245

Ten more 5 dollar bills than 10 dollar bills, means:

x - 10 = y

Now we substitute 2nd equation in first and solve for x:

$5x + 10y = 245\\5x + 10(x-10) = 245\\5x+10x-100=245\\15x=345\\x=23$

Also,

y = x - 10

y = 23 - 10 = 13

So there are 23 5-dollar bills and 13 10-dollar bills

6 0

4 years ago

OMG PLEASE HELP YOUR BOY OUT I NEED TO GET THIS ONE RIGHT TO PASS THE TEST!!!

kotykmax [81]

The answer is b i think i’m not sure

5 0

3 years ago

You are to take a multiple-choice exam consisting of 64 questions with 5 possible responses to each question. Suppose that you h

stepan [7]

Answer:

(a) The expected score is 12.8

(b) The standard deviation is 3.2 and variance is 10.24

Step-by-step explanation:

Consider the provided information.

You are to take a multiple-choice exam consisting of 64 questions with 5 possible responses to each question.

Here n=64 p=1/5 and q=1-1/5=4/5

Part (a) we need to find the expected score on the exam.

Expected = np

Expected score = number of questions × P(right)

$Score = 64 \times \frac{1}{5} = 12.8$

Hence, the expected score is 12.8

Part (b) Compute the variance and standard deviation of x.

Standard Deviation: $\sigma =\sqrt{npq}$

Now calculate the standard deviation as shown:

$\sigma =\sqrt{64\times \frac{1}{5}\times \frac{4}{5}}$

$\sigma =\sqrt{\frac{256}{25}}$

$\sigma =\frac{16}{5}=3.2$

Variance: $\sigma^2 =npq$

$\sigma^2 =64\times \frac{1}{5}\times \frac{4}{5}$

$\sigma^2 =\frac{256}{25}$

$\sigma^2 =10.24$

Hence, the standard deviation is 3.2 and variance is 10.24

5 0

4 years ago

A can of vegetables has radius 1.8 in and height 5.9 in. Find the volume of the can. use 3.14 for pi

nalin [4]

Answer:

The volume of cyclinder is 60 in³

Step-by-step explanation:

Using the formula of the volume of cyclinder, V = π×r²×h, where r is the radius and h is the height. Then you are able to find it by substituing the following value into the formula :

π = 3.14

r = 1.8 in

h = 5.9 in

V = 3.14×1.8²×5.9

= 60.0 in³ (3s.f)

5 0

4 years ago

Read 2 more answers

EastWind [94]

Answer: A,C

Step-by-step explanation: They are facing each other making them interior angles

6 0

4 years ago