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Nana76 [90]
3 years ago
6

How are these 2 equations equivalent? 3(a+b) 3a+3b

Mathematics
2 answers:
emmainna [20.7K]3 years ago
5 0

Answer:

The distributive property.

Step-by-step explanation:

If a coefficient is outside the parenthesis you can multiply it by the coefficient of the things within

vovikov84 [41]3 years ago
4 0

Answer:

Distributive property

Step-by-step explanation:

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I'm not understanding which statement is correct, to me they all look wrong
neonofarm [45]

Answer:

it is the third option because -3.2 is greater than -5.4

Step-by-step explanation:

4 0
2 years ago
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Find the value of x in each case. Give reasons to justify your solutions! e L, M ∈ KN
Greeley [361]

Answer:

X=36

Step-by-step explanation:

3x+72=180

3x=180-72

3x=108

x=36

8 0
3 years ago
Weather affects flights across the nation, causing delays, cancellations, and general disruption to the NAS. You have gathered a
hammer [34]

Answer:

a.) one sample t test

b.) H0 : μ = 59.3

c.) H1 : μ > 59.3

d.) μ = 59.3 ; σ = 39.84

e.) xbar = 79.4 ; s = 61.36

Test statistic = 3.16

Step-by-step explanation:

Given the sample data:

49.00 49.00 49.00 49.00 49.00 63.00 63.00 63.00 63.00 63.00 199.00 199.00 199.00 199.00 199.00 38.00 38.00 38.00 38.00 38.00 48.00 48.00 48.00 48.00 48.00 49.00 63.00 199.00 38.00 48.00

Sample size, n = 30

Using calculator :

xbar from the data above = 79.4

Standard deviation = 61.359

H0 : μ = 59.3

H1 : μ > 59.3

Test statistic :

(Xbar - μ) ÷ (σ/sqrt(n)

σ = 34.83

(79.4 - 59.3) ÷ (34.83/sqrt(30))

20.1 ÷ 6.359

Test statistic = 3.16

4 0
2 years ago
How do you do systems of equations ?
Arada [10]
There are 2 methods  you are taught in Middle School.

Elimination and Substitution.
8 0
3 years ago
Is this correct? Thanks to anyone who answers.
GREYUIT [131]
Hello!

A proportional relationship means the line passes through the origin (0,0) and shows a constant rate of change.

Your answers appear to be correct. Good job! :)

8 0
3 years ago
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