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Semenov [28]
3 years ago
8

7a + 8 = 20 solve for a

Mathematics
2 answers:
hram777 [196]3 years ago
8 0

Answer:

a=\frac{12}{7} or 1\frac{5}{7}

Step-by-step explanation:

andreev551 [17]3 years ago
8 0

Answer:

a = 12/7

Step-by-step explanation:

7a + 8= 20

7a = 12

a = 12/7

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Pls help! Brainliest for first correct answer!
Triss [41]

Answer:

36 kg

Step-by-step explanation:

Let m = mass of green tea.

The total mixture should be (18*3.5+2.6*m)/(18+m) = 2.9

The numerator is $, denominator is kg

Therefore 63+2.6m = 52.2+2.9m

0.3m = 10.8

3m = 108

m = 36

6 0
3 years ago
For what value of x is the area of the rectangle greater than the perimeter? The base of the perimeter is x+2
TiliK225 [7]
If we call the area A, then A=7(x+2)=7x+14
if we call the perimeter P, then P=7*2+2(x+2)=2x+18
A>P
7x+14>2x+18
subtracting 14 gives 7x>2x+4
subtracting 2x gives 5x>4
dividing by 5 gives x>\frac{4}{5}
or x>0.8
8 0
3 years ago
Determine if the rates are equivalent. Explain your reasoning.5 cans of soup for $3.75; 8 cans of soup for $6.00
Liula [17]

Answer:

They are equivalent

Step-by-step explanation:

Since 3.75 divided by 5 is .75 that means that 6 divided by 8 would have to also be .75 which, if you divide it, it is.

6 0
3 years ago
Read 2 more answers
How to solve: (looking for b)<br>y =mx+b
mamaluj [8]
Subtracting mx from both sides, we get y-mx=b
4 0
3 years ago
Jabrin was tossing a ball up in the air and catching it. He found that in 50 tries, he could catch it 45 times. He is going to d
krek1111 [17]

Answer:

As the question states, predict how many times. I don't get the "realistic" prediction part, but however,

he caught it 9/10 times. I can predict he will catch it 29.7 times, rounded to 30 times.

7 0
2 years ago
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