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3 years ago

Camille is trying to find the area of her new bedroom to see if her new carpet will fit. What unit should she use?

Mathematics

2 answers:

Tpy6a [65]3 years ago

6 0

When looking a unit for measuring it should always be square feet

brilliants [131]3 years ago

5 0

She should use square feet. always use square feet when calculating area.

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What does it say In the speaker

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3 years ago

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Carol wants to build a fence around her

yaroslaw [1]

Answer:

540$

Step-by-step explanation:

9x9 = 81

9 + 9 + 9 + 9 = 36

36 x 15 =540

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3 years ago

When the sum of \, 528 \, and three times a positive number is subtracted from the square of the number, the result is \, 120. F

aleksandr82 [10.1K]

Let $x$ be the unknown number. So, three times that number means $3x$ , and the square of the number is $x^2$

We have to sum 528 and three times the number, so we have $528+3x$

Then, we have to subtract this number from $x^2$ , so we have

$x^2-(3x+528)$

The result is 120, so the equation is

$x^2 - 3x - 528 = 120 \iff x^2 - 3x - 648 = 0$

This is a quadratic equation, i.e. an equation like $ax^2+bx+c=0$ . These equation can be solved - assuming they have a solution - with the following formula

$x_{1,2} = \dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

If you plug the values from your equation, you have

$x_{1,2} = \dfrac{3\pm\sqrt{9-4\cdot(-648)}}{2} = \dfrac{3\pm\sqrt{9+2592}}{2} = \dfrac{3\pm\sqrt{2601}}{2} = \dfrac{3\pm51}{2}$

So, the two solutions would be

$x = \dfrac{3+51}{2} = \dfrac{54}{2} = 27$

$x = \dfrac{3-51}{2} = \dfrac{-48}{2} = -24$

But we know that x is positive, so we only accept the solution $x = 27$

6 0

3 years ago

The mean of a normally distributed dataset is 12, and the standard deviation is 2.

Schach [20]

So lets do it like this:
z = (X-Mean)/SD
z1 = (8-12)/2 = - 2 
z2 = (16-12)/2 = + 2 
According to the Empirical Rule 68-95-99.7 
Mean more or less 2SD covers 95% of the values 
So the percentage of data points falling between 8 and 16 = 95%
I hope this can help

5 0

3 years ago

Live fund are selling their holdings at $5,000 per share. how much would live fund receive if they sold half their holding in Ma

Marina86 [1]

Let us assume that the total number of shares (also called the total holdings) held by Live Fund in Marks Brothers is $T$ .

Then obviously half the holdings (or half the number of shares) of Live Fund will be $\frac{T}{2}$ .

Thus, if each share is valued at $5000, then the total value of the number of shares sold (which is $\frac{T}{2}$ will be:

$5000\times \frac{T}{2} =2500T$ dollars or $ $2500T$ .

Thus, Live Fund will receive $ $2500T$ if they sold half their holding in Marks Brothers.

4 0

3 years ago

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