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3 years ago

X=5 so what is (x+3)² =

Mathematics

2 answers:

AnnZ [28]3 years ago

7 0

(3+x)²

(5+3)²=

8²=

OLga [1]3 years ago

4 0

Answer:

Step-by-step explanation:

Since x=5

(5+3)^2

(8)^2= 64

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. A school band sold 432 tickets for their upcoming spring concert. This represents about 85.5% of the number of tickets sold la

Law Incorporation [45]

Based on the question, we know that the
original value multiplied by .855 will equate
to 432:
ticketstastyear * 0.855 = 132
Dividing each side by 0.855 results in the
amount of tickets sold last year:
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We round to the nearest whole number of
505.

The answer is 505

7 0

2 years ago

5 less than a number is 12

storchak [24]

That number would be 17

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3 years ago

Read 2 more answers

A person recently read that 84% of cat owners are women. How large a sample should the researcher take if she wishes to be 90% c

Lana71 [14]

Answer:

405

Step-by-step explanation:

To find sample size, use the following equation, where n = sample size, za/2 = the critical value, p = probability of success, q = probability of failure, and E = margin of error.

$n=\frac{(z_{\frac{\alpha }{2} })^{2} *p*q }{E^2}$

The values that are given are p = 0.84 and E = 0.03.

You can solve for the critical value which is equal to the z-score of (1 - confidence level)/2. Use the calculator function of invNorm to find the z-score. The value will given with a negative sign, but you can ignore that.

(1 - 0.9) = 0.1/2 = 0.05

invNorm(0.05, 0, 1) = 1.645

You can also solve for q which is 1 - p. For this problem q = 1 - 0.84 = 0.16

Plug the values into the equation and solve for n.

$n =\frac{(1.645)^2*0.84*0.16}{(0.03)^2}\\n= 404.0997333$

Round up to the next number, giving you 405.

6 0

3 years ago

A circle with a circumference of 51 inches to find the area

Kaylis [27]

$\textit{circumference of a circle}\\\\ C=2\pi r~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ C=51 \end{cases}\implies 51=2\pi r\implies \boxed{\cfrac{51}{2\pi }=r} \\\\[-0.35em] ~\dotfill\\\\ \textit{area of a circle}\\\\ A=\pi r^2\qquad \implies A=\pi \left( \cfrac{51}{2\pi } \right)^2\implies A=\cfrac{51^2}{2^2\pi }\implies A\approx 206.98$

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3 years ago

What does a+b equal if a is equal to 0.6 and b is equal to 1.9

Lunna [17]

0.6+1.9= 2.5 is the result.

8 0

3 years ago

X=5 so what is (x+3)² =​

X=5 so what is (x+3)² =