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2 years ago

Does someone mind helping me with this problem? Thank you!

Mathematics

2 answers:

g100num [7]2 years ago

4 0

Answer:

area = 1/2 b*h

Step-by-step explanation:

1/2 * 6 * 8 = 24 ft^2

mixas84 [53]2 years ago

4 0

Answer:

24 square feet

Step-by-step explanation:

1/2 ×base× height

therefore 48÷2

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On a trip, the Olsons drove 165 miles in 3 hours. They keep the same average speed the whole trip. Which proportion can be used

zheka24 [161]

165/3=55 mph

650/55=h
650/(165/3)=h
(650*3)/165=h
3/165=h/650
h/650=3/165

so it is the third option

3 0

3 years ago

Please help.<br> Algebra.

Aneli [31]

Answer 3 is (0, 5)
Answer 4 is in comments.

3 0

3 years ago

Read 2 more answers

Suppose that a jewelry store tracked the amount of emeralds they sold each week to more accurately estimate how many emeralds to

RUDIKE [14]

Answer:

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

And for this case the 95% confidence interval is given by (2.13; 2.37)

We have a point of estimate for the sample mean with this formula:

$\bar X = \frac{Upper+ Lower}{2}= \frac{3.37+2.13}{2}= 2.75$

And for the margin of error we have the following estimation:

$ME= \frac{Upper -Lower}{2}= \frac{3.37-2.13}{2}= 0.62$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X$ represent the sample mean

$\mu$ population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

And for this case the 95% confidence interval is given by (2.13; 2.37)

We have a point of estimate for the sample mean with this formula:

$\bar X = \frac{Upper+ Lower}{2}= \frac{3.37+2.13}{2}= 2.75$

And for the margin of error we have the following estimation:

$ME= \frac{Upper -Lower}{2}= \frac{3.37-2.13}{2}= 0.62$

5 0

3 years ago

Josh’s mother is buying baked goods for breakfast. Doughnuts cost $1.00

Ira Lisetskai [31]

Answer:

B or $8.75

Step-by-step explanation:

Hope this helps!

8 0

3 years ago

Read 2 more answers

HELPPP IF YOU CAN DO THISSSS (BRAINLIST) thank youuu

grigory [225]

Answer:

a) $50,880

b) $48

c) 1060

Step-by-step explanation:

-320x^2 + 1920x + 48000 = 0

This is a parabola that opens downward. It has a maximum value. The maximum value occurs at x = -b/(2a)

x = -b/(2a) = (-1920)/(2(-320)) = 1920/640 = 3

The maximum revenue, y, is the value of the function evaluated at x = 3.

f(x) = -320x^2 + 1920x + 48000

f(-3) = -320(3)^2 + 1920(3) + 48000

f(-3) = 50,880

The maximum revenue is $50,880

Since maximum revenue occurs at x = 3, and since x represents the number of $4 discounts, the discount is 3 * $4 = $12. The price is $60 - $12 = $48

$50,880/$48 = 1060

3 0

4 years ago