Write and algebraic expression for nine times of the square of a number

Mathematics

1 answer:

salantis [7]4 years ago

3 0

Answer:

9• x2

Step-by-step explanation:

Well you have 9 and then you times(•) then X is the number we don’t know. Then x would be squared(like the image below).

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The sum of the square of a positive number and the square of 44 more than the number is 250250. what is the number?

kolbaska11 [484]

Let p positive number:

p²+44²>250250

p²>250250-44²

p²>248314

take the square root of both sides:

√p²>+√248314

p> 498.3 or 500 is the number

8 0

3 years ago

Solve by quadratic formula. x squared plus x plus 1 = 0

Tasya [4]

Remember that the quadratic formula is: $\dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}$ .

$a$ stands for the coefficient of the first term, the one associated with the $x^2$ , $b$ stands for the coefficient of the second term, the one associated with $x$ , and $c$ stands for the value of the constant.

In $x^2 + x + 1 = 0$ , our a-value is 1, our b-value is also 1, and our c-value is also 1.

Thus, when we plug in our values into our formula, we get the answer:

$\dfrac{-1 \pm \sqrt{1^2 - 4(1)(1)}}{2(1)} = \dfrac{-1 \pm \sqrt{-3}}{2}$

Simplifying this answer using $i = \sqrt{-1}$ , we get our final answer of:

$\boxed{x = \dfrac{-1 \pm i\sqrt{3}}{2}}$

5 0

4 years ago

A person has body fat percentage of 17.2% and weighs 171 pound how many pounds of her weight is made up of fat

Citrus2011 [14]

Answer: 29.41 pounds

Step-by-step explanation:

You have the following information given in the problem:

- The fat percentage that the person has is 17.2%

- The person weighs 171 pounds.

Therefore, to calculate the amount of pounds of her weight is made up of fat (which you can call x), you must multiply the weight of the person by the fat percentage.

Therefore, you obtain the following result:

$x=171lb*0.172\\x=29.41lb$