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3 years ago

Please help im gonna scream im so confuesed :(

Mathematics

2 answers:

iren [92.7K]3 years ago

5 0

Answer:

$14^{-17}$

Step-by-step explanation

using the rules of exponents, it would be $14^{10}$ ÷ $14^{27}$ so then take away 27 from 10 and get -17 meaning that the answer would be A or $14^{-17}$

Neko [114]3 years ago

3 0

Answer: A

Step-by-step explanation:

14^10 is already set.

(14^9)^3 is not set you need to multiply the exponents

14^18

14^10/14^27 = 14

14^-27 or 1/14^27

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Sarah has a collection of nickels, dimes, and quarters worth $28.75. She has 10 more dimes than nickels and twice as many quarte

Ymorist [56]

Answer:

Step-by-step explanation:

Write an equation for each statement:

"Sarah has a collection of nickels, dimes, and quarters worth $15.75."

.05n + .1d + .25q = 15.75

"She has 10 more dimes than nickels"

d = n + 10

"twice as many quarters as dimes."

q = 2d

How many coins of each kind does she have?

Take the 2nd equation and arrange it so n is in terms of d also

n + 10 = d

n = (d - 10)

In the 1st equation substitute (d-10) for n and 2d for q:

.05n + .1d + .25q = 15.75

.05(d-10) + .1d + .25(2d) = 15.75

.05d - .5 + .1d + .5d = 15.75

.65d - .5 = 15.75

.65d = 15.75 + .5

.65d = 16.25

d = 16.25/.65

d = 25 dimes

Remember the statement "twice as many quarters as dimes."

q = 2(25)

q = 50 quarters

The statement "She has 10 more dimes than nickels"

n = 25 - 10

n - 15 nickels

Check our solutions

.05(15) + .1(25) + .25(50) =

.75 + 2.50 + 12.50 = 15.75 proves our solutions

8 0

2 years ago

A student claims that only one operation is needed to calculate the length of the subtended arc when given the measure of a cent

Debora [2.8K]

Having the angle in radians and the diameter of the circle we can easily calculate the length using the following expression

Length = angle(radians)*diameter/2

With this expression we can easily deduce the perimeter of a circle (length of the full arc)

Length = Perimeter = 2*pi*r

There is only one operation involved in this process

4 0

3 years ago

A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by th

iren [92.7K]

9514 1404 393

Answer:

32 feet

Step-by-step explanation:

0 seconds after launch, the rocket is still sitting on the tower. Its height is...

y = -16(0^2) +57(0) +32

y = 0 + 0 + 32 = 32

The rocket was launched from a tower 32 feet high.

6 0

2 years ago

One fourth the sum of x and ten is identical to x minus 4."

Lynna [10]

Answer and Step-by-step explanation:

We are given the word format of an equation.

Let's right it out in numerical form.

$\frac{1}{4} (x + 10) = x - 4$

The first part says One fourth the sum of x and 10

The sum of x and 10 would be shown as x + 10, and one fourth of that means that $\frac{1}{4}$ is multiplying (x + 10).

In this case, identical would mean equal to.

So, $\frac{1}{4}$ (x + 10) would be = to something.

It says that it is identical to x minus 4 (x - 4).

$\frac{1}{4} (x + 10) = x - 4$ is the equation.

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5 0

2 years ago

Tulky draws 4 ten sticks and less than ten circles to make what number

11111nata11111 [884]

I would try -50 i really dont get what your asking but i did -10 -40=50

3 0

3 years ago