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4 years ago

Simplify this as much as possible. −7w(−2w^9)

Mathematics

2 answers:

OLga [1]4 years ago

7 0

-2w^9= -512w. -7w times -512w= 3584w. I believe this is correct. :)

Lemur [1.5K]4 years ago

5 0

The answer would be 14^10. Hope this helps!

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Watermelon is on sale for $4 per pound. How much would 12.8 pounds cost?

Lana71 [14]

Answer:

$51.2

Step-by-step explanation:

4 x 12.8 = 51.2

4 0

3 years ago

Find the center and radius of this circle (x+13)^2+(y+2)^2=81

dezoksy [38]

Answer:

center (-13,2) radius=9

Step-by-step explanation:

(x+13)^2+(y+2)^2=81

x=-13

y=-2

r=sq rt of 81

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3 years ago

N =64

faust18 [17]

Answer:

B. 1.70

Step-by-step explanation:

Given:

$n=64$
$\overline{x}=65.1$
$\sigma=24$
$\textsf{h}_0:\mu=60$
$\textsf{h}_1:\mu\neq 60$

$\textsf{If }\: X \sim\textsf{N}(\mu,\sigma^2)\:\textsf{ then }\: \overline{X} \sim \left(\mu,\dfrac{\sigma^2}{n}\right) \implies Z=\dfrac{\overline{X}-\mu}{\sigma / \sqrt{n}} \sim \textsf{N}(0,1)$

$\textsf{then test statistic is}: \quad z=\dfrac{\overline{x}-\mu}{\sigma / \sqrt{n}}$

Substituting the given values into the formula to find the test statistic z:

$\begin{aligned}\implies z &=\dfrac{65.1-60}{24 / \sqrt{64}}\\\\&=\dfrac{5.1}{3}\\\\&=\dfrac{17}{10}\\\\&=1.7\end{aligned}$

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2 years ago

You are buying pizzas for a neighborhood party each pizza costs $9

Allisa [31]

Answer:

p = 8

Step-by-step explanation:

well all you have to do is divide 72 by 9 which you get 8

so you can buy 8 pizzas.

7 0

4 years ago

Find the domain and range of the equation:<br><br>b(x)=|x-3|

zzz [600]

Domain: Set of all real numbers.

The domain in interval notation is (-infinity, infinity)

The reason why the domain is the set of all real numbers is because we can pick any number we want for x, without having to worry about division by zero errors or taking the square root of negative values. There are no restrictions for x.

==========================================================

Range: Set of all non-negative numbers.

As an inequality, you would write $y \ge 0$ (y is greater than or equal to 0)

In interval notation, the range is written as [0, infinity)

The absolute value result cannot be negative. The smallest y = |x| can get is y = 0. This applies to y = |x-3| as well. The use of square brackets tells the reader "include y = 0 as part of the range". You always use curved parenthesis for infinity because you can never actually reach infinity.

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4 years ago