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Ivanshal [37]
3 years ago
12

How do you get-4 to 4 How do you get -4 to 4

Mathematics
2 answers:
ahrayia [7]3 years ago
8 0

Answer:

multiply by negitive 1

Aloiza [94]3 years ago
7 0

Answer:

Absolute Value

Step-by-step explanation:

The magnitude of a real number without regard to its sign

|−4| = 4

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How do you do number 1?<br>Whenever I tried to answer it, I always get fraction. help me.​
Flura [38]

Answer:

The pairs are (13,15) and (-15,-13).

Step-by-step explanation:

If n is an odd integer, the very next odd integer will be n+2.

n+1 is even (so we aren't using this number)

The sum of the squares of (n) and (n+2) is 394.

This means

(n)^2+(n+2)^2=394

n^2+(n+2)(n+2)=394

n^2+n^2+4n+4=394               since (a+b)(a+b)=a^2+2ab+b^2

Combine like terms:

2n^2+4n+4=394

Subtract 394 on both sides:

2n^2+4n-390=0

Divide both sides by 2:

n^2+2n-195=0

Now we need to find two numbers that multiply to be -195 and add up to be 2.

15 and -13 since 15(-13)=-195 and 15+(-13)=2

So the factored form is

(n+15)(n-13)=0

This means we have n+15=0 and n-13=0 to solve.

n+15=0

Subtract 15 on both sides:

n=-15

n-13=0

Add 13 on both sides:

n=13

So if n=13 , then n+2=15.

If n=-15, then n+2=-13.

Let's check both results

(n,n+2)=(13,15)

13^2+15^2=169+225=394.  So (13,15) looks good!

(n,n+2)=(-15,-13)

(-15)^2+(-13)^2=225+169=394.  So (-15,-13) looks good!

6 0
3 years ago
If a car is traveling at 64 mph how many miles will it travel in 6 hours
kozerog [31]

Answer:

384

Step-by-step explanation:

64*6=384

Hope it helped!

6 0
2 years ago
Read 2 more answers
Assume that a set of test scores is normally distributed with a mean of 70 and a standard deviation of 10. In what percentile is
vlabodo [156]
Given:
μ = 70, the mean
σ = 10, the standard deviation

The random variable is x = 65.
Calculate the z-score.
z = (x - μ)/σ = (65 -70)/10 = - 0.5

From standard ables, obtain
P(x<5) = 0.3085 ≈ 30%
The score of 65 is in the 30th percentile.

Answer: 30th
3 0
3 years ago
A line passing through the point (-8,-3) and has a slope of 5/4
ValentinkaMS [17]

Answer:

y=5/4x+7

Step-by-step explanation:

Honestly, I just guessed and checked, but here is a picture of evidence.

5 0
3 years ago
Read 2 more answers
Select all of the equations that are true.
ValentinkaMS [17]

Answer:

none

823÷418=2

1112÷834=1.333333333

8 0
2 years ago
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