2 years ago

Hello please help ty

Mathematics

2 answers:

Amiraneli [1.4K]2 years ago

7 0

Answer:

i think a but not sure

Step-by-step explanation:

i always second guess myself but a was first answer for me

Vikentia [17]2 years ago

6 0

Answer:

The 3rd one (7+3)a^4

Step-by-step explanation:

This is because you have to distribute everything in the parentheses to (a) to the fourth power.

Hope this helps.

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3 years ago

SAT math scores have a bell-shaped distribution with a mean of 515 and a standard deviation of 114.

nadezda [96]

Hey there mate :)

Analysis :

$401 = 515 - 114 = u - 6$

And

$173 = 515 - 3.114 = u - 36$

$= \frac{p(u - 36 < u < u + 36) - p(u - 6 < u < u + 6)}{2}$

$= \frac{99.73percent - 68.21percent}{2}$

$= \frac{31.46percent}{2}$

$= {15.73percent}$

Then, calculating,

$u - 26 = 515 - 2 \times 114 = 287$

And

$u + 26 = 515 + 2 \times 114 = 743$

Then,

$The \: Range = (287,743)$

Final Answers :-

15.73 %

(287,743)

~Benjemin360

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2 years ago

A packing box in the shape of a cube measures 8 inches on each side. How many cubic zirconia inches does the box hold?

AVprozaik [17]

The packing box has 32inche

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3 years ago

A man spent 58% of his income and the amount of money left was $210. Find his income

professor190 [17]

Answer:

500 $

Step-by-step explanation:

$\frac{42\%}{210}=\frac{100\%}{x}$

$\frac{\frac{21}{50}}{210}=\frac{1}{x}$

$\frac{21}{50}x=210\\$

$\frac{21}{50}x\cdot \:50=210\cdot \:50\\$

x=500

Red

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3 years ago

1 5/8 write as a decimal

oksian1 [2.3K]

It goes as 1.875. Hope this helped you :)))

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3 years ago

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