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2 years ago

Answer please!!! Best answer gets brainliest!!!

Mathematics

1 answer:

melamori03 [73]2 years ago

4 0

Answer:

Step-by-step explanation:

hope this is right????

im not sure if i did it correctly but i tryed

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Jon finds a box of 350 postcards. He selects a random sample of 75 postcards and finds that 27 already have a stamp on them. Pre

DiKsa [7]

Answer:

126

Step-by-step explanation:

Let the total number of postcard with stamp on it =x

Out of 350 postcards, x has stamp on it.

Out of 75 postcards, 27 has stamp on it.

Expressing these as a ratio:

350:x=75:27

350/x=75/27

Cross multiply

75x=350*27

x=(350*27)/75

x= 126

Therefore, the the total number of postcards in the box with stamps on them is 126.

5 0

3 years ago

For a loan of $40,000 at 12% for 10 years, how much do you wind up paying back?

Masteriza [31]

Answer:

B . 4800

Step-by-step explanation:

12 percent of 40000 = 4800.

7 0

3 years ago

He function y=−16x2+v0x models the height of a golf ball in feet x seconds after a player hits it. In the equation of the functi

Leokris [45]

Answer:

V0 = 48 feet per second is the answer.

Step-by-step explanation:

The given function which represents height of a golf ball in feet after x seconds after a player hits it.

y = -16x² + v0x

here v0 is the initial velocity and we have to calculate initial velocity. The ball returns to the ground 3 seconds after it is hit.

After 3 seconds height of the ball will be 0.

Now from the given function

0 = -16(3)² + v0×3

3v = 16×9

v0 = 16×9/3 = 48 feet per second.

8 0

3 years ago

Read 2 more answers

Write the prime factorization of 10. Use exponents when appropriate and order the factors from least to greatest (for example, 2

earnstyle [38]

The prime factorization of 10 is 2*5. No exponents required.

5 0

3 years ago

The College Student Journal (December 1992) investigated differences in traditional and nontraditional students, where nontradit

shutvik [7]

Answer:

There is a 0.13% probability that the random sample of 100 nontraditional students have a mean GPA greater than 3.65.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by

$Z = \frac{X - \mu}{\sigma}$

After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X. Subtracting 1 by the pvalue, we This p-value is the probability that the value of the measure is greater than X.

For this problem, we have that:

Based on the study results, we can assume the population mean and standard deviation for the GPA of nontraditional students is $\mu = 3.5$ and $\sigma = 0.5$ .