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3 years ago

Which of the following is a correct interpretation of the expression 3 - (-5)?

Mathematics

1 answer:

Schach [20]3 years ago

4 0

Answer:

The number that is 5 to the right of 3 on the number line

Step-by-step explanation:

Our expression is 3 -(-5)

While opening bracket the sign of 5 will be reversed as ee have a negative sign before it. Hence

3-(-5)=3+5

That means we will move 5 units towards positive x axis from 3. Hence the right answe is The number that is 5 to the right of 3 on the number line

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12 to 15 Help Gracias

Ray Of Light [21]

Answer: 13, 14

Step-by-step explanation:

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3 years ago

A final exam in Math 160 has a mean of 73 with standard deviation 7.8. If 24 students are randomly selected, find the probabilit

never [62]

A sample of size n taken from a population with mean = µ and standard deviation = σ has sample mean = µ and sample s.d. = σ/√n.

If the final exam scores are normally distributed, and X is a random variable for the mean of a sample, then

Pr[X < 70] = Pr[(X - 73) / (7.8/√24) < (70 - 73) / (7.8/√24)]

… ≈ Pr[Z < -1.8842]

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3 years ago

Two more than seven times Lynn's age

Vikki [24]

Answer:

7y + 2

Step-by-step explanation:

Let y represent Lynn's age. Then "two more than seven times Lynn's age " would be 7y + 2.

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3 years ago

Quiana has 7 times more text messages from Yolanda than from Pierre. Quiana has 56 text messages from Yolanda. Which equation ca

gizmo_the_mogwai [7]

Answer:

Quiana has 8 text messages from Pierre.

Step-by-step explanation:

This question can be solved using a rule of three.

Quiana has 7 times more text messages from Yolanda than from Pierre.

This means that for each message that she receives from Pierre, she receives 7 from Yolanda.

She received 56 from Yolanda.

7 messages from Yolanda - 1 messages from Pierre

56 messages from Yolanda - x messages from Pierre

$7x = 56$

$x = \frac{56}{7}$

$x = 8$

Quiana has 8 text messages from Pierre.

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3 years ago

What is the value of b? A. 100 B. 90 C. 80

Pachacha [2.7K]

Answer: the answer is C. 80°

Step-by-step explanation:

= 360 - 110 - 90

=160°

b=1/2 (160)

b=80°

4 0

4 years ago

Read 2 more answers