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d1i1m1o1n [39]
3 years ago
12

Christian wants to make an A in his class. There are 5 exams this year, and he has taken 4 of them. His grades were 84, 88, 95,

and 104. What grade must Christian earn on the last exam to get an average of at least a 90?
Mathematics
1 answer:
ioda3 years ago
3 0

Answer:

last test grade=x     x ≥ 79 so 79%

Step-by-step explanation:

(84/5)+(88/5)+(95/5)+(104/5)+(x/5) ≥ 90

Simplify: (371/5)+(x/5) ≥ 90

Subtract (371/5) from both sides

Then you have (x/5) ≥ (79/5)

Then multiply both sides by 5 and you have x ≥ 79

P.S. If it was helpful please consider giving me brainliest. =)

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Answer:

33.333...% over the base 100% (100% is representing the $5.40)

Step-by-step explanation:

she gets $7.20 from selling the 18 chocolate bars

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the 1 in 1.3333... represents the base 5.40 and the 0.3333... represents the profit

8 0
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Some online banks offer "online bill pay."What does this mean?
sleet_krkn [62]
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HELP ASAP !! easy question and i’ll give brainliest
tia_tia [17]

Answer:

x=38.5

Step-by-step explanation:

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3 years ago
Read 2 more answers
Find the difference (20m+3)-(7m-5)
xz_007 [3.2K]

Answer:

Simplifying

(20m + 3) + -1(7m + -5) = 0

Reorder the terms:

(3 + 20m) + -1(7m + -5) = 0

Remove parenthesis around (3 + 20m)

3 + 20m + -1(7m + -5) = 0

Reorder the terms:

3 + 20m + -1(-5 + 7m) = 0

3 + 20m + (-5 * -1 + 7m * -1) = 0

3 + 20m + (5 + -7m) = 0

Reorder the terms:

3 + 5 + 20m + -7m = 0

Combine like terms: 3 + 5 = 8

8 + 20m + -7m = 0

Combine like terms: 20m + -7m = 13m

8 + 13m = 0

Solving

8 + 13m = 0

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '-8' to each side of the equation.

8 + -8 + 13m = 0 + -8

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13m = 0 + -8

Combine like terms: 0 + -8 = -8

13m = -8

Divide each side by '13'.

m = -0.6153846154

Simplifying

m = -0.6153846154Step-by-step explanation:

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3 years ago
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Answer:

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Step-by-step explanation:

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