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3 years ago

2. A store sells an assortment of batteries

Mathematics

2 answers:

beks73 [17]3 years ago

4 0

Answer:

b. 30%

Explanation:

90 ÷ 300 × 100%

= 9 ÷ 30 × 100%

= 0.3 × 100%

= 30%

i hope this helps! :D

astra-53 [7]3 years ago

3 0

Answer:

30%

Step-by-step explanation:

# of bulk packs = 300

# of triple As = 90

% = 90 / 300 * 100%

% = .3 * 100%

% = 30%

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During a musical an orchestra is playing. As the music plays, the volume changes in the beginning of the piece can be modeled by

Alja [10]

Answer:

The numbers of measure of music played are 1 and 7

Step-by-step explanation:

Given

$s = 10|x - 4| + 50$

Required

Solve for x when s = 80

Substitute 80 for x

$80 = 10|x - 4| + 50$

Subtract 50 from both sides

$80 - 50= 10|x - 4| + 50 - 50$

$30= 10|x - 4|$

Divide through by 10

$\frac{30}{10}= \frac{10|x - 4| }{10}$

$3= |x - 4|$

Reorder

$|x - 4| = 3$

This can be split into

$x - 4 = 3$ or $x - 4 = -3$

Solve for x

$x = 4 + 3$ or $x = 4 - 3$

$x = 7$ or $x = 1$

Hence:

<em>The numbers of measure of music played are 1 and 7</em>

4 0

3 years ago

A number is decreased by seven. Then, the new number is multiplied by 3 to get an answer of -9. What is the original number?

stellarik [79]

4-7= -3
-3x3= -9
answer is C

8 0

3 years ago

Can you answer these 3 questions for me plz

finlep [7]

A.
$1hr \: 15min = 75min$

$c = 0.22t = 0.22 \times 75 = 16.5$

cost is $16.50

B.

$26.40 = 0.22 \times t$

rearrange to solve for t:

$t = \frac{26.40}{0.22} = 120min$

C. This is the same as part B, only the rate changed

$t = \frac{26.40}{0.25} = 105.6min$

they ask for the greatest number of minutes, so we round down (take the floor of the value).

the answer is 105 minutes.

4 0

3 years ago

Read 2 more answers

What is 0.5 repeating in fraction form?

aev [14]

.555555555555555555 =5/9

5 0

3 years ago

X=2y+11 <br> -7x-27=-13<br> solve with substitution

Lilit [14]

Answer:

x=13/7, y=-32/7

Step-by-step explanation:

Just trust me

8 0

3 years ago