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3 years ago

Help me by answering these 2 for me :)

Mathematics

1 answer:

Alborosie3 years ago

4 0

$2,514 and $2,027. Samantha pay over the three years $2,514 of interest, while Tomas will be earn $2,027 at the end of the four years.

These are problems of simple interest, whose formula is I = Prt. Where I is interest, P is principal (intial value), r is the interest rate, and t is time (year).

The simple interest refers to the interest that an initial capital produces in a period of time, which does not accumulate to the capital to produce the interests of the following period; concluding that the simple interest generated or paid for the capital invested or borrowed will be the same in all the periods of the investment or loan while the interest rate and the term do not change.

Samantha wants to borrow $7,618 for 3 years at an interest rate of 11% per year. How much interest will Samantha pay over the three years?

I = Prt, with P = $7,618, r = 11%/100=0.11, and t = 3 years.

I = (7618)(0.11)(3) = 2513.94 ≅ 2514

Tomas invested $6,874 dollars for 4 years. If he was paid an interest rate of 7.37% per year. How much interest will be earn at the end of the four years.

I = Prt, with P = $6,874, r = 7.37%/100 = 0.0737, and t = 4 years

I = (6874)(0.0737)(4) = 2026.45 ≅ 2027

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WC= 15 and CO = 17, what is OW?

soldier1979 [14.2K]

We know that triangle COW is a right triangle by the Tangent to a Circle Theorem.

So, we can use Pythagorean Theorem to find OW.

OW² + WC² = CO²

OW² + 15² = 17²

OW² + 225 = 289

OW² = 64

OW = 8

4 0

3 years ago

It is believed that a stock price for a particular company will grow at a rate of $5 per week with a standard deviation of $1. A

IgorLugansk [536]

Answer:

Step-by-step explanation:

We would set up the hypothesis test. This is a test of a single population mean since we are dealing with mean

For the null hypothesis,

µ = $5

For the alternative hypothesis,

µ < $5

number of samples taken = 10

Sample mean, x = (4 + 3 + 2 + 3 + 1 + 7 + 2 + 1 + 1 + 2)/10 = 2.6

To determine sample standard deviation, s

s = √(summation(x - mean)/n

n = 12

Summation(x - mean) = (4 - 2.6)^2 + (3 - 2.6)^2 + (2 - 2.6)^2 + (3 - 2.6)^2 + (1 - 2.6)^2 + (7 - 2.6)^2 + (2 - 2.6)^2 + (1 - 2.6)^2 + (1 - 2.6)^2 + (2 - 2.6)^2 = 30.4

s = √30.4/10 = 1.74

Since the number of samples is 10 and no population standard deviation is given, the distribution is a student's t.

Since n = 10,

Degrees of freedom, df = n - 1 = 10 - 1 = 9

t = (x - µ)/(s/√n)

Where

x = sample mean = 2.6

µ = population mean = 5

s = samples standard deviation = 1.74

t = (2.6 - 5)/(1.74/√10) = - 4.36

We would determine the p value at alpha = 0.05. using the t test calculator. It becomes

p = 0.000912

7 0

3 years ago

If ΔABC≅ΔMNO, then what corresponding angle is congruent to angle N? (Enter your answer using the angle letter only.) (6 points)

Marysya12 [62]

Since they've already told us what triangles are congruent, all we have to do is match up the correct letters.

By CPCTC, angle N is congruent to angle B.

Hope this helps!

5 0

3 years ago

Read 2 more answers

Write a compound inequality where A quantity x is at least 10 and at most 20

inna [77]

would the way to display the compound inequality.

3 0

4 years ago

this year senior class at high school A and the senior class at high school B both planned trips there. The senior class at High

Cerrena [4.2K]

Answer;

this year senior class at high school A and the senior class at high school B both planned trips there. The senior class at High school A rented and filled 8 vans and 6 buses with 342 students. High school B rented and filled 4 vans and 1 bus with 105 students.

Step-by-step explanation:

4 0

4 years ago

Help me by answering these 2 for me :)​

Help me by answering these 2 for me :)