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KIM [24]
3 years ago
6

Need help,please and thank you

Mathematics
1 answer:
Daniel [21]3 years ago
4 0
X=90 which (180-90) is 90 for m and n
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What is m in 4/5m=2/9 is it 5/18
Romashka [77]
\frac{4}{5} m =  \frac{2}{9} \\ \\  \frac{4m}{5} =  \frac{2}{9} \\ \\ 4m =  \frac{2}{9} \times 5 \\ \\ 4m =  \frac{10}{9} \\ \\ m =  \frac{10}{9 \times 4} \\ \\ m =  \frac{10}{36} \\ \\ m =  \frac{5}{18} \\ \\

The final result is: m = 5/18 or 0.2778.
8 0
3 years ago
A boat traveled 225 miles each way downstream and back. The trip downstream took 9 hours. The trip back took 15 hours. What is t
Karolina [17]

Answer:

Boat = 20 mph

Current = 5 mph

Step-by-step explanation:

If b is the speed of the boat, and c is the speed of the current, then:

b + c = 225 / 9 = 25

b − c = 225 / 15 = 15

Solve the system of equations with elimination.

2b = 40

b = 20

Plug back into either equation to find the speed of the current.

c = 5

5 0
3 years ago
Please help me I suck at math
kari74 [83]

Answer:

B) 9 gallons

Step-by-step explanation:

It's asking you what 3/4ths of 12 is. Therefore, you multiply 3/4 by 12 to get your answer which is 9 gallons.

5 0
3 years ago
Read 2 more answers
The ages of three children in a family can be expressed as consecutive integers. The square of the age of the youngest child is
tensa zangetsu [6.8K]

Answer: 10, 11, & 12

<u>Step-by-step explanation:</u>

Let x represent the age of the youngest child.  

Their ages are consecutive so,

Youngest: x

Middle: x + 1

Oldest: x + 2

The age of the Youngest squared (x²) equals 8 times the Oldest [8(x + 2)] plus 4.

x² = 8(x + 2) + 4

x² = 8x + 16 + 4

x² = 8x + 20

x² - 8x - 20 = 0

(x - 10)(x + 2) = 0

x - 10 = 0     or      x + 2 = 0

  x = 10       or          x = -2

Since age cannot be negative, x = -2 is not valid

So, the Youngest (x) is 10

the Middle (x + 1) is 11

and the Oldest (x + 2) is 12

4 0
3 years ago
Describe the transformations of the given function:<br><br> f(x)=−14|x−2|+5
statuscvo [17]

Answer:

im busy so i cant right now

Step-by-step explanation:

7 0
3 years ago
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