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mamaluj [8]
3 years ago
12

The quotient of 9 times an unknown number and 16 is 81.

Mathematics
1 answer:
lys-0071 [83]3 years ago
5 0
Represent the unknown number with x
9x / 16 = 81
Multiply both sides by 16
9x = 1296
Divide both sides by 9
x = 144
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Whats 2 1/2 X 1 1/2 someone pls help
Wittaler [7]

Answer:

15/4

Step-by-step explanation:

2 1/2 x 1 1/2

First, make them both improper fractions to make them easier to multiply

5/2 x 3/2

Multiply their numerators together to get the numerator and multiply their denominators together to get the denominator.

5 x 3 = 15

2 x 2 = 4

5/2 x 3/2 = 15/4

4 0
3 years ago
I need help with this and I have a lot more to go
enyata [817]

Answer:

under root 2, 1.5, 2π

Step-by-step explanation:

under under root 2 is equals to 1.414

1.5

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3 0
3 years ago
In a recent international sport competition, the top 3 countries— Country A, Country B, and Country C— won a total of 134 medals
vlada-n [284]

Answer:

Country A = 85, Country B = 29, Country C = 20

Step-by-step explanation:

A+B+C=134 ----- eq(1)

B=C+9 ------------ eq(2)

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By substituting eq(2) in eq(3), we get:

A=36+C+9+C

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Now substituting eq(2) & eq(4) in eq(1), we get

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Now putting the value of C in eq(2),

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Substituting the value of B & C in eq(1), we get:

A+29+20=134

A+49=134

A=134-49

A=85

6 0
3 years ago
The measures of two angles are 4x and (2x+12). what is the measurement of each angle if x=13?
oksano4ka [1.4K]

Answer:

52 and  38

Step-by-step explanation:

If x = 13 then 4x = 4 * 13 so 52.  

Same for the next one.  2x = 2 * 13 so 26.  26+12 is 38.  

Done...

7 0
3 years ago
Below is a dot plot showing how much time customers spent in a store, rounded to the nearest five minutes. Which of the followin
murzikaleks [220]

Answer:

D

Step-by-step explanation:

i did a test with the same question

4 0
3 years ago
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