4 years ago

It is greater than 43 and less then 52 if you add the digits the sum is 8

Mathematics

1 answer:

Ksenya-84 [330]4 years ago

3 0

44 is the answer 4+4=8

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andre [41]

Answer : $\frac{49}{4}$

Given expression is $x^2 - 7x + c$

To make perfect square trinominal we use completing the square method

In completing the square method we add and subtract the half of square of coefficient of middle term

Here coefficient of middle term is -7

Half of -7 is $\frac{-7}{2}$

Square of $\frac{-7}{2}$ is $(\frac{-7}{2})^2$ = $\frac{49}{4}$

So the expression becomes $x^2 - 7x + [tex] \frac{49}{4}$ that gives perfect square trinomial

Hence , the value of 'c' is $\frac{49}{4}$

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3 years ago

Mark got 54 out of 66 in his maths test how many did he get wrong. Give your answer in its simplest form

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Answer:

9/11 I think!

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3 years ago

From 75 pencils to 225 penicls

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He gained 150 pencils

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So this person had 75 pencils and now has 225?

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