1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
horsena [70]
3 years ago
15

Denise spent $56.48 at the grocery store while Michael spent $74.06. How much more money did Michael spendthan Denise?A.$17.58B.

$37.03C.$65.27D.$130.54
Mathematics
3 answers:
Makovka662 [10]3 years ago
5 0

Answer:

A 17.58

Step-by-step explanation:

ZanzabumX [31]3 years ago
3 0
We will use the equation 74.06-56.48=? To find the change in prices, aka how much more money was spent. That equals 17.58. So A, Michael spent $17.58 more than Denise.
rayray2 years ago
0 0

the answer is b

You might be interested in
Write five equivalent expressions that are equivalent to:<br> 120 + 3.6
MAVERICK [17]

Answer:

*61.8 × 2

*10.6 + 113

*247.2 divided by 2

*203.6 - 80

*111.6 + 12

3 0
3 years ago
An SRS of 450 450 high school seniors gained an average of ¯ x = 20 x¯=20 points in their second attempt at the SAT Mathematics
maria [59]

Answer: (15.47, 24.53)

Step-by-step explanation:

We know that the confidence interval for population mean is given by :_

\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}

, where n= sample size.

\sigma = standard deviation.

\overline{x}= sample mean.

z*= Critical value.

Given : n= 450

\overline{x}=20

\sigma=49

Critical value for 95% confidence = z*=1.96     [From z-value table]

Then, the 95% confidence interval will be :-

20\pm (1.96)\dfrac{49}{\sqrt{450}}

\approx 20\pm (1.96)(2.31)

\approx 20\pm 4.53

=(20-4.53,\ 20+4.53)=(15.47,\ 24.53)

Hence, the 95% confidence interval for the mean change in score μ μ in the population of all high school seniors. : (15.47, 24.53)

3 0
3 years ago
The water works commission needs to know the mean household usage of water by the residents of a small town in gallons per day.
valina [46]

Answer:

A sample of 179 is needed.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.85}{2} = 0.075

Now, we have to find z in the Ztable as such z has a pvalue of 1 - \alpha.

That is z with a pvalue of 1 - 0.075 = 0.925, so Z = 1.44.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

A previous study found that for an average family the variance is 1.69 gallon?

This means that \sigma = \sqrt{1.69} = 1.3

If they are using a 85% level of confidence, how large of a sample is required to estimate the mean usage of water?

A sample of n is needed, and n is found for M = 0.14. So

M = z\frac{\sigma}{\sqrt{n}}

0.14 = 1.44\frac{1.3}{\sqrt{n}}

0.14\sqrt{n} = 1.44*1.3

\sqrt{n} = \frac{1.44*1.3}{0.14}

(\sqrt{n})^2 = (\frac{1.44*1.3}{0.14})^2

n = 178.8

Rounding up

A sample of 179 is needed.

7 0
3 years ago
The graph of f (0) = -4 cos 0 is shown below. The range of this function is
Anika [276]

Answer:

-4 ≤ f (\theta) ≤ 4

Step-by-step explanation:

The range of a function is the allowed y-values of the function.

We can simply look at the periodic function below and see that the y-value ranges from a negative 4 to a positive 4. It oscillates betwen -4 and 4. That is the range.

We can say -4 ≤ f (\theta) ≤ 4

Last answer choice is right.

*** <u>NOTE:</u> it is a type, not "0", rather "\theta"

5 0
3 years ago
Last year, Bob used 10 bottles of shampoo and 8 bottles of conditioner. His sister, Kayla, used 7 bottles of shampoo and 6 bottl
REY [17]
The lower ratio would be bob and that dude need to slow down the hair stuff

10 to 8 ratio is about 8.00
7 to 6 ratio is about 9.00

im not to good at math so dubble cheek just in case hope i could help tho

rip my spelling
6 0
3 years ago
Other questions:
  • a truck can be rented from company A for $90 a day plus $0.50 per mile. Companh B charges $30 a day plus $0.90 per mile to rent
    10·1 answer
  • Assume that the readings at freezing on a batch of thermometers are Normally distributed with mean 0°C and standard deviation 1.
    8·1 answer
  • Create a table for x and y<br> y= -2/3 +7<br> the function of the is domain -12, -6, 3,15
    12·1 answer
  • Only answer if you know the correct answer! Thanks! :)
    8·2 answers
  • What is the gear ratio of a 10 tooth gear driving a 40 tooth gear?
    5·1 answer
  • Alicia is building a gazebo and want to brace each corner by placing 14 inch wooden bracket
    7·1 answer
  • Goes through points (-2,-1) and (-3,5)<br> Help me pleaseeeeeeeeeee
    13·1 answer
  • Jason and Kyle both choose a number from 1 to 30 at random. What is the probability that both numbers are odd?
    14·1 answer
  • What is: 3/4 + (1/3 / 1/6) - (-1/2) = a
    8·1 answer
  • Which is the graph of the function f(x) = 1/2x2 + 2x - 6?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!