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3 years ago

How do I do an exponent with a letter variable in it?

Mathematics

1 answer:

WARRIOR [948]3 years ago

7 0

First you transform the expression and then evaluate the power

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Find the value of f(2)

Nesterboy [21]

Answer:

2f is the answer isk how to explain but it's 2f

4 0

2 years ago

B) The perimeter of the shape is 25.71 cm

natita [175]

Answer:

$r=4cm$

Step-by-step explanation:

Having the radius to be involved, the shape is a circle.

<u>Circumference formula </u>

$c=2\pi r$

Finding radius, formula will be reversed.

$r=\frac{25.72cm}{2\pi }$

$r=\frac{25.71cm}{2(3.142)}$ $r=\frac{25.71cm}{6.284}$ $r=4.09cm$

4 0

3 years ago

Two professional baseball teams played a four game series. Attendance for the first three games was 126,503 people, what was the

ioda

Answer: 44,815 people; 126,503 + n = 171,318; n = 171,318 − 126,503

6 0

3 years ago

There are 11 reams of paper in a case. How many total reams of paper are in 12 cases?

s2008m [1.1K]

Formula is:
Number of reams per case x number of cases

11 x 12 = 132 reams

8 0

3 years ago

The position of a passenger train that is traveling at an initial speed of 14 feet per second and continues to accelerate can be

salantis [7]

Solving the system of equations, it is found that a viable time that the trains are side by side is given by:

B. 15 sec

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the equations are:

$y = 14t^2$

$y = 130t + 1200$

They will be side by side when:

$14t^2 = 130t + 1200$

$14t^2 - 130t - 1200 = 0$

It's solution is a quadratic function with coefficients a = 14, b = -130, c = -1200, hence:

$\Delta = (-130)^2 - 4(14)(-1200) = 84100$

$x_1 = \frac{130 + \sqrt{84100}}{28} = 15$

$x_2 = \frac{130 - \sqrt{84100}}{28} = -5.71$

Time is a non-negative measure, hence option B is correct.

More can be learned about a system of equations at brainly.com/question/24342899

5 0

2 years ago