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2 years ago

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A garden store bought a fountain at a cost of $995.66 and marked it up 100%. Later on, the store marked it down 25%. What was th

e discount price?

2 answers:

Aliun [14]2 years ago

7 0

Answer:

Step-by-step explanation:

nexus9112 [7]2 years ago

3 0

Answer:

1493.49

Step-by-step explanation:

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Assume that the national average score on a standardized test is 1010, and the standard deviation is 200, where scores are norma

kotykmax [81]

Answer:

0.00

Step-by-step explanation:

If the national average score on a standardized test is 1010, and the standard deviation is 200, where scores are normally distributed, to calculate the probability that a test taker scores at least 1600 on the test, we should first to calculate the z-score related to 1600. This z-score is $z=\frac{1600-1010}{200}=2.95$ , then, we are seeking P(Z > 2.95), where Z is normally distributed with mean 0 and standard deviation 1. Therefore, P(Z > 2.95) = 0.00

4 0

2 years ago

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A bicycle wheel with diameter 16 inches rides over a screw in the street. The screw is on level ground before it punctures the b

Julli [10]

Answer:

The correct option is;

16 inches

Step-by-step explanation:

The parameters of the motion given are;

The diameter, D of the bicycle = 16 inches;

The distance the bike moves (forward) after the screw punctures the tire = 56·π inches

We note that the circumference of the bicycle = π·D = π × 16 = 16·π inches

Therefore;

56·π inches/(16·π inches) = 3.5

Showing that the bicycle moves three and half complete turns (revolution) where after each complete turn, the screw starts from the bottom of the tire.

The height, h of the screw in the final half turn is given by the relation;

h = A×cos(Bx - C) + D

A = Amplitude of the motion = Diameter/2 = 16/2 = 8

P = The period of the motion 2·π/B

B·x = The angle described by the motion = Half of one revolution = π = 180°

C = Phase shift = π

D = The midline = Diameter/2 = 8 inches

Therefore;

h = 8×cos(π - π) + 8 = 16 inches

After the bike moves forward another 56·π inches the height of the screw = 16 inches.

3 0

2 years ago

The image of a triangle after it has been dilated with a center of dilation at the origin has vertices at A prime(12, –6), B pri

nika2105 [10]

Answer:

C is (-18, 24)

Scale factor --> 1 1/3

A is (9, - 4 1/2) *4 1/2 is also 4.5

<u><em>Brainliest please, I need a few more :D</em></u>

5 0

2 years ago

Read 2 more answers

Bobby's investment of $225,000 loses value at a rate of 3% per year. Use an exponential function to find the value of the invest

AleksAgata [21]

We have been given that Bobby's investment of $225,000 loses value at a rate of 3% per year. We are asked to find the value of the investment after 10 years.

We will us exponential decay function to solve our given problem.

We know that an exponential function is in form $y=a\cdot (1-r)^x$ , where,

y = Final amount,

a = Initial amount,

r = Decay rate in decimal form,

x = Time.

Let us convert 3% into decimal.

$3\%=\frac{3}{100}=0.03$

Upon substituting $a=\$225,000$ , $r=0.03$ and $x=10$ , we will get:

$y=\$225,000(1-0.03)^{10}$

$y=\$225,000(0.97)^{10}$

$y=\$225,000(0.7374241268949283)$

$y=\$165,920.4285513588675$

Upon rounding to nearest dollar, we will get;

$y\approx \$165,920$

Therefore, the value of the investment after 10 years would be $\$165,920$ .

5 0

2 years ago

You are a serious student who studies on Friday nights but your roommate goes out and has a good time. 40% of the time he goes o

Lyrx [107]

Answer:

the probability is 0.24 or 24%

Step-by-step explanation:

Given

Percentage of time he goes out with his girlfriend = 40%

Percentage of time he goes out to a bar = 60%

If he goes out with his girlfriend, the percentage of times he spends the night at his girlfriend’s apartment = 30%

If he goes out to a bar, percentage of times he gets in a fight and gets thrown in jail = 40%

let probability that the roommate went to the bar = A

As the roommate going to jail is a conditional probability dependent on A happening, the true probability of the roommate is found by multiplying the absolute probability of the roommate going out to a bar (A) by the probability of the roommate going to jail if he goes to a bar

that is Pr(B) =Pr (B n A)

Pr(B) = Pr(B/A) *Pr(A)

This is given as 60% * 40% or 0.6 * 0.4 (probabilities are 1/100 of percentages)

This gives an answer of 0.24 or 24%

4 0

2 years ago