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erastovalidia [21]
3 years ago
12

Answer ASAP, will give brainliest!!

Mathematics
1 answer:
Sindrei [870]3 years ago
8 0

Answer:

Step-by-step explanation:

77; The formula to calculating the area of a trapezoid is (a+b)/2 * c. a+b are the 2 parallel lines, and c is the height or the altitude. So, it is (10+12)/2 * 7, which is 22/2 * 7 = 11*7=77 :)

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olga55 [171]

Answer:

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Step-by-step explanation:

lets substitute the appropriate values in the equation:

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7 0
2 years ago
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The solution set for <br> 6a^2-a-5=0
Alex_Xolod [135]

Answer:

a=1 or a=5/6

Step-by-step explanation:

I'm going to attempt to factor 6a^2-a-5

a=6

b=-1

c=-5

Find two numbers that multiply to be a*c and add to be b.

a*c=-30                                   =-6(5)

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So replace -a with -6a+5a in the expression we started with

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now we factor by grouping

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Now let's solve the equation:

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3 years ago
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Answer:

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