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kenny6666 [7]
3 years ago
15

Help!!

Mathematics
1 answer:
Anika [276]3 years ago
4 0

Step-by-step explanation:

80-38=42 The print total

38-16=22 The females for eBooks

36-16= 20 The males for Print

80-36= 44 The total females

Hope this helped!

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If 3a-2b= 8 and a+3b=7 what is the value of 4a+b?
Fittoniya [83]
Step 1: Find the value of one variable in terms of the other.

a+3b=7\\a=7-3b

Step 2: Substitute the value you just found for this variable in the other equation.

3a-2b=8\\3(7-3b)-2b=8\\21-9b-2b=8\\21-11b=8\\21=8+11b\\13=11b\\\frac{13}{11}=b\\ b=1\frac{2}{11}

Step 3: Use your new value for the second variable to find the first.

a+3b=7\\a+3(1\frac{2}{11})=7\\a+3\frac{6}{11}=7\\\\a=3\frac{5}{11}

Now that we know the values for a and b we can find the value of 4a+b.

4a+b\\4(3\frac{5}{11})+1\frac{2}{11}\\12+\frac{20}{11}+1\frac{2}{11}\\\\12+1\frac{9}{11}+1\frac{2}{11}\\\\\boxed{15}
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3 years ago
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Margaret [11]

Answer:

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Step-by-step explanation:

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3 years ago
Complete the equation below to show a way to write 5/38 as a fraction
vaieri [72.5K]
5/38 is 0.13 because you have to divide them
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Write this ratio as a fraction in simplest form without any units. 5 weeks to 10 days
faltersainse [42]
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3 years ago
PLEASE HELP !!!!!
konstantin123 [22]

Answer:

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Step-by-step explanation:

parallel run side by side and perpendicular cross at 90 degree angle.  these equations come out to looking like a X

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