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k0ka [10]
4 years ago
13

PLZZZ HELP DUE BY MIDNIGHT

Mathematics
1 answer:
trapecia [35]4 years ago
4 0

Answer: (i) 4x - 40 = 76

(ii) 29 questions

Step-by-step explanation:

Let the total number of questions be x.

Since he received 4 points for every correct answer and he got 10 answers wrong , this means he lost 40 points , the equation thus become

4x - 40 = 76

To find the value of x , add 40 to both sides

4x = 116

divide through by 4

x = 29

Therefore , there are 29  questions on his math test

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Explanation:

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Goryan [66]
  • Answer:

<em>Aaron 14 years</em>

<em>Devon 17 years</em>

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<em>D = A + 3</em>

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<em>replace D</em>

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3 years ago
The sum of 42 and x is equal to 97.45. What's the equation for the sentence?!! Help!
gogolik [260]

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If 42 + X = 97.45, X needs to be 97.45 - 42

you can do the same thing with smaller numbers, for example:

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