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DanielleElmas [232]
2 years ago
15

Rachel received a $90 gift card for a coffee store. She used it in buying some coffee that cost $7.74 per pound. After buying th

e coffee, she had $66.78 left on her card. How many pounds of coffee did she buy?
Mathematics
1 answer:
Ivenika [448]2 years ago
7 0

Answer:

3 pounds

Step-by-step explanation:

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Over the three evenings,Karen received a total of 137 phone calls at the call center. The third evening, she received 4 times as
marin [14]

Answer:

1st: 22, 2nd: 27, 3rd: 88

Step-by-step explanation:

Make an equation

If she recieved x calls the 1st evening, then the 2nd evening she recieved x+5, and the 3rd evening she recieved 4x.

x+x+5+4x=137

Combine like terms

6x+5=137

Subtract 5 from both sides

6x=132

Divide by 6 on both sides

x=22

First:

22 calls

Second:

x+5

22+5

27 calls

Third:

4x

4*22

88 calls

Hope this helps!

3 0
2 years ago
I need to write an algebraic expression that includes 2 constatants, 2 variables, and 2 different operations. It also need it in
belka [17]

Answer:

An example would be

(x+3)-(y+12)

The two constants are 3 and 12 (I'm assuming you meant "constant" as in the number that stands by itself and not "constatant" lol)

The two variables are x and y

The two operations are addition and subtraction

In words you could say "the quantity of x plus three minus the quantity of y plus twelve"

3 0
3 years ago
Solutions to this equation!!
otez555 [7]

Answer:

w=3/5 or w=-5

Step-by-step explanation:

5w^2+22w=15

5w^2+22w-15=0 (quadratic equation)

a=5, b=22, c=-15

w1,2 =(-b+-sqrt(b^2-4ac))/2a

w1,2 =(-22+-sqrt(22^2-4*5*(-15))/2*5

w1,2 =(-22+-sqrt(484+300))/10

w1,2=(-22+-sqrt(784))/10

w1,2=(-22+-28)/10

w1=(-22+28)/10, w2=(-22-28)/10

w1=6/10, w2=-50/10

w1=3/5, w2=-5

8 0
3 years ago
Blood type AB is found in only 3% of the population.† If 345 people are chosen at random, find the probability of the following.
Anna007 [38]

Answer:

345 times 0.03 = 10.35 but we cant have 0.35 of a person so it is 10 people

Step-by-step explanation:

3 0
2 years ago
Ginny has two vegetable gardens.In the second garden,Ginny grows tomatoes every 3 years.This year,Ginny grows tomatoes in both g
kherson [118]
So it would be in six years because if you do it, it would be 
garden 1: 2,4,6,8
garden 2: 3,6,9
and the lowest common multiple is 6 so in 6 years is when it will happen again
7 0
3 years ago
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