Solve: 12 dogs decreased by 25% step by step pls.

Answers

Answer 1

Answer: decreased by 25%
find 25% of 12 and decrease 12 by it

percent means parts out of 100
25%=25/100=1/4
'of' means multiply
25% of 12=1/4 times 12=3

decrease 12 by 3
12-3=9

answer is 9

Answer 2

Answer:

first turn 25% into a decimal so it's easier to work with, the decimal for 25% is 0.25

then multiply the number by the decimal

12x0.25=3

then subtract your answer (3) from your starting number

12-3=9

12 dogs decreased by 25% leaves you with 9 dogs left.

if you are increasing, divide instead of multiply

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OMG HELP ME PLEASE A card was selected at random from a standard deck of cards. The suit of the card was recorded, and then the card was put back in the deck. The table shows the results after 40 trials.

What is the relative frequency of selecting a club?

Outcome Club Diamond Heart Spade
Number of trials 8 12 11 9

A.
17%

B.
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C.
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D.
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Answers

the answer is D.30% they have 30% of getting a club.

The table shows the times it took four runners to finish a 400 meter race.Runner K-2 MINUTES 5SEC
Runner L-1 MINUTE 44SEC
Runner M-2MINUTES 15 SEC
Runner N-1 MIN 52 SEC

WHICH RUNNER HAD THE HIGHEST AVERAGE SPEED?

Answers

Runner L had the highest average speed

I only need number 16.

Answers

4(x - 2) is different from the others, due to the distributive property of multiplication. All of the other options can be simplified into (or already are) 4x - 2. 4(x - 2), however, would simplify into 4x - 8. So 4(x - 2) is your answer.

4(x-2) are not equivalent to other three.
It has the value of 4x-8 which is different from other three.
The value of other three expression is 4x-2.

Alaine has 1 gallon of paint. She is going to pour it into a paint tray that measures 10 inches wide, 12 inches long, and 5 cm deep.(1 gallon = 231 in3, 1 inch = 2.54 cm)

Answers

$1\ in=2.54\ cm\ \ \Rightarrow\ \ 1\ cm= (1)/(2.54)\ in \ \ \Rightarrow\ \ 5\ cm= (5)/(2.54)\ in\n \n10\ in\ \cdot12\ in\ \cdot 5\ cm=120\cdot (5)/(2.54)\ in^3\approx283.5\ in^3\n \n\n1\ gallon=231\ in^3\ <\ 283.5\ in^3\n\n\nAns.\ 1\ gallon\ of\ paint\ will\ fit\ in\ the\ paint\ tray.$

A refrigerator magnet uses 5/8 inch of magnetic tape. How many refrigerator magnets can you make with 10 inches of magnetic tape? explain.

Answers

To get the answer use division:

5/8 ÷ 10 = 0.0625

Turn it back into a fraction:

Decimal - 0.0625
Fraction - 1/16

Hope I helped You!!! :-)

Have A Good Day!!!

2x +3y =12 Dan 3x-1y=7

Answers

2x+3y=12
3x-y=7

use subsituttion
make one of the equations equal to a placeholder
3x-y=7
subtract 7
3x-7-y=0
add y
3x-7=y
subsisute 3x-7 for y in first equation

2x+3(3x-7)=12
2x+9x-21=12
11x-21=12
add 21 to both sides
11x=33
divide both sides by 11
x=3

subsitute x for 3 in any equation
3x-7=y
3(3)-7=y
9-7=
2=y

x=3
y=2

2x+3y=12
3y=-2x+12
y=-2x/3+4

3x-1y=7
-1y=-3x+7
y=3x-7

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