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3 years ago

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In a store flyer, 7 TVs were advertised at the following prices: $799, $949, $709, $619, $807, $675, $949. The store manager wan

ts to advertise that the typical cost of TVs sold at his store is better than those sold at the competing stores. Which measure of central tendency would best show this?

1 answer:

Lorico [155]3 years ago

3 0

Answer:

The surface area of a sphere can be found using the formula SA=4(x)pi(x)R squared. Middleton Middle School wants to paint kickballs purple for their carnival. The kickballs are all the same size. They used 6923.7 inches

of paint when painting 5 kickballs. What is the radius of each purple kickball? Use 3.14 for pi

x=times

Step-by-step explanation:

answer me question thx for the points

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A circle with a radius of 1/2ft is dilated by a scale factor of 8. Which statements about the new circle are true? Check all tha

otez555 [7]

Answer:

A) The length of the new radius will be 4 feet

C) The new circumference will be 8 times the original circumference

F) The new area will be 64 times the original area

H) The new area will be 16π square feet

Step-by-step explanation:

<u><em>Verify each statement</em></u>

see the attached figure to better understand the problem

Part A) The length of the new radius will be 4 feet

The statement is true

Because

we know that

The radius of the original circle is r=1/2 ft

The scale factor is 8

so

To find out the length of the new radius multiply the radius of the original circle by the scale factor

(1/2)(8)=4 ft

Part B) The length of the new radius will be 32 feet.

The statement is false

Because, the length of the new radius is 4 ft (see part A)

Part C) The new circumference will be 8 times the original circumference

The statement is true

Because

The original circumference is equal to

$C=\pi (\frac{1}{2})$

$C=\frac{1}{2}\pi\ ft$

The new circumference is equal to

$C=\pi (4)$

$C=4\pi\ ft$

Divide $\frac{4\pi}{(1/2)\pi}=8$

so

the new circumference will be the original circumference multiplied by 8

Part D) The new circumference will be 64 times the original circumference

The statement is false

Because, the new circumference will be 8 times the original circumference (see part C)

Part E) The new area will be 8 times the original area

The statement is false

we know that

If two figures are similar, then the ratio of its areas is equal to the scale factor squared

The scale factor is 8

so

The scale factor squared is 8²=64

therefore

The new area will be 64 times the original area

Part F) The new area will be 64 times the original area

The statement is true

(see Part E)

Part G) The new circumference will be 8π feet

The statement is false

Because, the new circumference will be 4π feet (see part C)

Part H) The new area will be 16π square feet

The statement is true

Because

The area of a circle is

$A=\pi r^{2}$

we have

$r=4\ ft$

substitute

$A=\pi (4)^{2}$

$A=16\pi\ ft^{2}$

3 0

4 years ago

Thank you so much!!!

vova2212 [387]

Answer:

$\fbox{\begin{minipage}{16em}Option D: y = (4/7)x + 8 is correct\end{minipage}}$

Step-by-step explanation:

(1) A typical form of equation of a line is:

$y = Mx + b$

with, $M$ is slope and $b$ is y-intercept.

(2) Another straight line has equation in form of:

$y = Nx + c$

with $N$ is slope and $c$ is y-intercept

(3) If these two lines are perpendicular, according to the property of two perpendicular lines on the two-dimensional plane, we have:

$M$ x $N$ = -1

(4) Transform the given equation of original line into typical form:

$7x + 4y = -24\\$

<=> $4y = -7x - 24$

<=> $y = (\frac{-7}{4})x - \frac{24}{4}$

<=> $y = (\frac{-7}{4})x - 6$

=> $M = \frac{-7}{4}$

=> $N = \frac{-1}{M} = \frac{-1}{\frac{-7}{4} } = \frac{-4}{-7} = \frac{4}{7}$

=> Option D: $y = (\frac{4}{7})x + 8$ is correct (Slope = $\frac{4}{7}$ )

Hope this helps!

:)

4 0

3 years ago

Please help me with the problem

katrin2010 [14]

Answer:

See the attachment.

Step-by-step explanation:

The approach is to take advantage of the definition of a perpendicular bisector to show the base lengths and right angles are congruent, then use SAS with the second side being CD (congruent to itself). It's mainly a matter of deciding what the various reasons are called.

It seems the goal is to show that AC = BC as marked.

3 0

3 years ago

Pls help it’s for a grade in math pls help

e-lub [12.9K]

Answer:

25,200

Step-by-step explanation:

First, find what 1% equals. Divide the total amount of people by 100. 105,000 divided by 100 = 1050. Multiply this by 24, because:

If 1% = 1050

To get 24% you need to multiply 1% by 24. Whatever you do to o ne side you have to do to the other.

1050 * 24 = 25,200

Therefore, the answer is 25,200 people

8 0

3 years ago

Read 2 more answers

The experimental probability of a coin landing on heads is 7/12. If the coin landed on tails 30 times, find the number of tosses

nordsb [41]

Answer: 72 tosses

Explanation: If the probability of landing heads is 7/12, the probability of landing tails is 5/12. So then you do cross multiplication, where you multiply the 12 and the 30, equalling 360. Then divide that by 5, equalling 72.

4 0

4 years ago