4 years ago

These angels are equal. What are they called?

Mathematics

1 answer:

Yanka [14]4 years ago

7 0

Acute angles because they are less then 90 degrees which is a right angle.

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4-t=3(t-1)-5<br> I really need steps, the variable in the parentheses is seriously confusing me.

Alekssandra [29.7K]

4 - t = 3(t - 1) - 5

= 4 - t = (3t - 3) - 5
= 4 - t = 3t - 8

Add 8 to both sides:
12 - t = 3t

Add t on both sides:
12 = 4t

Divide both sides by 4:
t = 3

Hope I helped :)

EDIT: Yeah I see where I went wrong - answer is 3

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navik [9.2K]

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A population has a mean µ = 6 and ∑x = 48. How many scores are in the population?

maks197457 [2]

Answer:

Step-by-step explanation:

Recall the formula for the population mean of a data set:

$\mu=\frac{\sum x}{N}$

We already know that μ is 6 and the sum is 48. Substitute:

$6=\frac{48}{N}$

Divide both sides by 48:

$\frac{1}{8}=\frac{1}{N}$

Reciprocal of both sides:

$N=8$

Thus, there are 8 scores in the population size.

And we're done!

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schepotkina [342]

Answer: I think it is -0.4

Step-by-step explanation:

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Subtract 4 from 1/6 of 42

ivanzaharov [21]

$\frac{1}{6} \times 42 - 4= \frac{42}{6}-4 = 7-4=3$

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