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2 years ago

15

Find the mean:31, 1, 12, 2, 21, 22, 1, 0, 31, 13

1 answer:

Bond [772]2 years ago

5 0

The mean is 13.4 because after I add the numbers in the set, the sum comes out to be 134. There are 10 numbers in the set, so you divide 134 by 10, which is 13.4 (134 <span>÷ 10 = 13.4). That is how you get the mean. It's "mean" to you because you 'gotta do a lot of work to get your final mean. </span>

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Determine whether

lora16 [44]

Answer:

(a) and (b) are not equivalent

(c) is equivalent

Step-by-step explanation:

Given

$\frac{25^m}{5}$

Required

Determine an equivalent or nonequivalent expression

$(a)\ 25^{m-1$

We have:

$25^{m-1$

Apply law of indices

$25^{m-1} = \frac{25^m}{25}$

<em>This is not equivalent to </em> $\frac{25^m}{5}$ <em></em>

$(b)\ 25^{2m - 1}$

We have:

$25^{2m - 1}$

Apply law of indices

$25^{2m - 1} = \frac{25^{2m}}{25}$

<em>This is not equivalent to </em> $\frac{25^m}{5}$ <em></em>

<em></em>

<em /> $(c)\ 5^{2m-1}$ <em />

We have:

<em /> $5^{2m-1}$ <em />

Apply law of indices

<em /> $5^{2m-1} = \frac{5^{2m}}{5^1}$ <em />

<em /> $5^{2m-1} = \frac{5^{2m}}{5}$ <em />

<em>Evaluate the numerator</em>

<em /> $5^{2m-1} = \frac{25m}{5}$ <em />

<em />

<em>This is an equivalent expression</em>

4 0

2 years ago

joe earns R25 per hour working at a pizza shop. How much will he earn over a weekend of two shifts, each six hours long

NeX [460]

Answer:

R300

Step-by-step explanation:

<u>To solve:</u>

Multiply 25 by 6 to represent the earnings of a shift.
Multiply the shift earnings by 2 to represent how much he earned over the weekend.

<u>Multiply</u><u> </u><u>25 by 6:</u>

$25 \times 6 = 150$

<u>Multiply 150 by 2:</u>

<u> $150 \times 2 = 300$ </u>

Joe will earn R300 over the weekend,

6 0

2 years ago

Which inequality has no solution?<br> 6(x+2) > x-3<br> 3+4x2(1+ 2x)<br> -2(x+6) X-9 <3(x-3)

Juli2301 [7.4K]

Answer:

$6(x + 2) > x - 3$

$6x + 12 > x - 3$

$6x - x > - 12 - 3$

$5x > - 9$

$3 + 4 \times 2(1 + 2x)$

$3 + 8(1 + 2x)$

$3 + 8 + 16x$

$11 + 16x$

$- 2(x + 6)x - 9 < 3(x - 3)$

$- 2( {x}^{2} + 6x) - 9 < 3x - 9$

$- 2 {x}^{2} - 12x - 9 < 3x - 9$

5 0

2 years ago

Courtneys belong to a health club that charges monthley fee of $25, plus $80 to join

densk [106]

PART A: the function is
Y=25x+80
X represents the number of months.

PART B:
You plug in 6 for X
(25*6)+80=230

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2 years ago

I have a box that is 5 inches wide 2 inches deep and 4 inches tall I want to fill with sand. how much sand can I fit inside the

myrzilka [38]

Answer:

40

Step-by-step explanation:

5x2 is 10 and 10x4=40

8 0

2 years ago