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Eduardwww [97]
2 years ago
6

John received a 68%, 72%, and 85% on three of his math tests. After his fourth math test he now has a 79% average. What score di

d he have received on his fourth test?
A) 79%
B) 89%
C) 91%
D) 100%


PLEASE EXPLAIN WHY OR I WILL RATE TWO STARS!
Mathematics
2 answers:
Dvinal [7]2 years ago
8 0

Answer:

68+72+85=225

plus 79 =304 divided by 4 = 76

plus 89 =314 divided by 4 = 78.5

plus 91=316 divided by 4 = 79

so the answer is C

plz brainlest

ArbitrLikvidat [17]2 years ago
5 0

Answer:

91%

Step-by-step explanation:

(0.68 + 0.72 + 0.85 + x)/4 = 0.79

(2.25 + x)/4 = 0.79

0.5625 + 1/4x = 0.79

1/4x = 0.2275

x = 0.91 = 91%

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2 years ago
If 4% of x equals 56, what is x
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3 years ago
Nick has $7.00. Bagels cost $0.75 each and a small container of cream cheese costs $1.29. Write an inequality to find the number
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.75x+1.29y < $7.00
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3 years ago
For the equation 4(2x-4)=8x+k, what value of K will create an equation with infinitely many solutions? Please show steps
strojnjashka [21]
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6 0
3 years ago
Read 2 more answers
A company sells boxes of small blue pom-poms (b) for $42 and boxes of large orange pom-poms (p) for $52. They make batches of sm
Strike441 [17]

Answer:

b = 40 - p

42b + 52p = 350

Step-by-step explanation:

Given : No. of small blue pom-pom boxes = b

            No. of large orange pom-poms    = p

           cost of 1 box of blue pom pom = $42

           cost of one  large orange pom-pom box = $52

Solution:

Since we are given that the company has only 40 boxes

⇒b+p=40

⇒b=40-p

Since cost of 1 box of blue pom pom = $42

So, cost of b box of blue pom pom = $42b

Since,cost of one  large orange pom-pom box = $52

So,cost of p  large orange pom-pom box = $52p

We are also given that the company plan to make $350

⇒42b+52p=350

Hence Option b is correct

b = 40 - p

42b + 52p = 350

4 0
3 years ago
Read 2 more answers
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