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2 years ago

5

Regina owns a book store. She sold 87, 94, 91, and 84 books on the first 4 days of this week. Regina wants to have a mean of 90

books sold after 5 days NEED IT FAST

1 answer:

andre [41]2 years ago

3 0

Answer:

If Regina wants a mean of 90, she needs to sell 94 books on the 5th day.

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Look at the images please help

Wittaler [7]

Answer:

$SA=672\ yd^2$

The net in the attached figure

Step-by-step explanation:

we know that

The surface area of the square pyramid using a net, is equal to the area of a square plus the area of its four lateral triangular faces

so

$SA=16^2+4[\frac{1}{2}(16)(13)]$

$SA=256+416=672\ yd^2$

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3 years ago

Why in division there is sometimes remaindres?

Ksenya-84 [330]

In division problems, if the division results in a decimal or fraction, (not a whole number), than it has a remainder. If the division results in a whole number, then there is no remainder, or a remainder of zero.

Examples:

6/3=2

6/4=1.5

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3 years ago

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How would I find the difference of 7/8 - 1/3 ?

Lemur [1.5K]

Answer:

$\frac{13}{24}$

Step-by-step explanation:

We have two fractions and are being asked to subtract them.

7/8 and 1/3 don't have the same denominator, so to do as so, we need to find the LCM of both denominators, multiply them to that, and do the same for the numerators.

So what is the LCM (Least Common Multiple) of 8 and 3?

24.

Therefore :

$\frac{7 * 3}{8 * 3} - \frac{1*8}{3*8}$

$\frac{21}{24} - \frac{8}{24}$

$\frac{13}{24}$

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3 years ago

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I need helppp plzzz :((

marshall27 [118]

Answer:

u=8

3u+5u=64

8u=64

u=8

finish

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3 years ago

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levacccp [35]

Answer:

Not a function

Step-by-step explanation:

Y values can repeat in a function but domain cannot. 3 is repeated twice, thus these values do not represent a function.

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3 years ago