Ask question

Ask question

All categories

3 years ago

10

PLEASE ANSWER QUICK IT IS EASY!!!!!!!!!!!!! A student took 75 minutes to answer a combination of 30 multiple-choice and extended

-response questions. She took 2 minutes to answer each multiple-choice question and 5 minutes to answer each extended-response question.

1 answer:

GenaCL600 [577]3 years ago

5 0

Answer:

What is the question? there is only statement.

You might be interested in

What are the exact solutions of x2 − 5x − 7 = 0, where x equals negative b plus or minus the square root of b squared minus 4 ti

Marat540 [252]

Answer:

$x = \frac{5 + \sqrt{53}}{2}$ or $x = \frac{5 - \sqrt{53}}{2}$

Step-by-step explanation:

Given

$x^2 - 5x - 7 = 0$

Required

Solve for x using:

$x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

First, we need to identify a, b and c

The general form of a quadratic equation is:

$ax^2 + bx + c = 0$

So, by comparison with $x^2 - 5x - 7 = 0$

$a = 1$ $b = -5$ $c = -7$

Substitute these values of a, b and c in

$x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

$x = \frac{-(-5) \± \sqrt{(-5)^2 - 4 * 1 * -7}}{2 * 1}$

$x = \frac{5 \± \sqrt{25 +28}}{2}$

$x = \frac{5 \± \sqrt{53}}{2}$

Split the expression to two

$x = \frac{5 + \sqrt{53}}{2}$ or $x = \frac{5 - \sqrt{53}}{2}$

To solve further in decimal form, we have

$x = \frac{5 + 7.28}{2}$ or $x = \frac{5 - 7.28}{2}$

$x = \frac{12.28}{2}$ or $x = \frac{-2.28}{2}$

$x = 6.14$ or $x = -1.14$

4 0

3 years ago

Find the equation of the line

MrMuchimi

The answer is y=x-5.

7 0

3 years ago

Factor the polynomial completely.24x^3-40x^2 45x-75

kumpel [21]

24x^3-40x^2. 45x-75
8x^2(3x-5). 15(3x-5)

(8x^2+15)(3x-5)

3 0

4 years ago

16. Two years of local phone service costs $883, including

Evgen [1.6K]

Answer:

The monthly fee would be $23

Step-by-step explanation:

hope it helps mark as brainllest if help!!!

3 0

2 years ago

Write and solve an inequality for each problem. Jorge’s soccer team is having its annual fundraiser. The team hopes

adelina 88 [10]

First of all, they need to triple their profits. So 87 x 3 = 241.

When you read the question, it says at least. In inequality terms, that means greater than equal to. You’d do this:

x is the amount of money they raise this year.

5 0

3 years ago