4 years ago

Find two numbers whose sum is -7 and whose difference is -1. Your answer is:

Mathematics

1 answer:

Katena32 [7]4 years ago

3 0

-3 & -4;

-3 + (-4) = 7

-3-(-4) = -3+4 = 1

You might be interested in

Find the distance between the points (5, -6) and (-1, 3).

emmasim [6.3K]

Answer:

$\sqrt{117}$

Step-by-step explanation:

Use the distance formula.

$d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$

$d = \sqrt{(-1 - 5)^2 + (3 - (-6))^2}$

$d = \sqrt{(-6)^2 + 9^2}$

$d = \sqrt{36 + 81}$

$d = \sqrt{117}$

6 0

3 years ago

A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 77 and a standar

Shalnov [3]

Answer:

0.9007 is the probability that a student scored below 86 on this exam.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 77

Standard Deviation, σ = 7

We are given that the distribution of examination grades is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(student scored below 86)

P(x < 86)

$P( x < 86) = P( z < \displaystyle\frac{86 - 77}{7}) = P(z < 1.2857)$

Calculation the value from standard normal z table, we have,

$P(x < 1.2857) = 0.9007 = 90.07\%$

0.9007 is the probability that a student scored below 86 on this exam.

7 0

3 years ago

How do I solve 964x83

sdas [7]

The answer would be 80012.

8 0

3 years ago

Read 2 more answers

Lynn bought a bag of grapefruit, 1 5/8 pounds of apples, and 2 3/16 pounds of bananas. The total weight of her purchase was 7 1/

Vitek1552 [10]

I think the bag of grape fruit weigh about 1 3/4

8 0

3 years ago

Read 2 more answers

How many 1/2 cup servings are in 9 cups of cereal?

Arlecino [84]

Answer:

Step-by-step explanation:

9 divided by 1/2 is the same as 9 multiplied by 2, which equals 18

5 0

2 years ago