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balandron [24]
3 years ago
7

Please help me Evaluate -9 - (-4)

Mathematics
2 answers:
Y_Kistochka [10]3 years ago
6 0

Answer:

Should be 13. Sorry if I’m incorrect!

Step-by-step explanation:

Natasha_Volkova [10]3 years ago
3 0
The answer is -5 because the minus after the 9 and the -4 in the parentheses makes the minuses a adding sign
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Help me please I need the answer
Verdich [7]

Answer:

141

Step-by-step explanation:

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3 0
3 years ago
What is 25% Of 30% Of 400?
marta [7]

Answer:

25% of 30% of 400 = 30

33% decrease in value

Step-by-step explanation:

You can either get 30% of 400 first then 25% of 400 or you can get the total percentage of 400.

Method 1:

30% of 400 = 0.3 of 400 = 0.3 * 400 = 120

25% of 120 = .25 of 120 = .25 * 120 = 30

Method 2:

30% of 25% = 0.3 * 0.25 = 0.075 = 7.5% of 400

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5.) To find the percentage  of the new price, you can build the equation below.

\frac{new price}{original price} = \frac{percent}{100}

\frac{200,000}{300,000}  = \frac{x}{100}

20,000,000 = 300,000x

x = 66.667

The percentage decrease in price is then 100% of the original price - 66.667% of the original price = 100% - 66.67% = 33.33% = 33% decrease.

3 0
3 years ago
Lacey decides to take her five year old son to the history museum. The price for the child's ticket is 2.75 dollars less than th
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If the price for the adult ticket is $2.75 more than the child ticket, the adult ticket would be x + $2.75
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Solve this system of linear equations. Separate
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Step-by-step explanation:

making x subject in eq 1

x= (-1-9y)/-14

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81=27y

y=3

substituting this value of y in eq 1

-14x=-1-9(3)

-14x=-28

x=2

(x,y) = (2,3)

8 0
3 years ago
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