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LuckyWell [14K]
2 years ago
7

How much would it cost to buy 3 $13 battery packs and 3 $22 copper wires

Mathematics
1 answer:
Makovka662 [10]2 years ago
6 0
It would cost $105 because if you do 13+13+13= 39
22+22+22= 66
66+39= 105.
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What is w/5 - 5 > -8?
ki77a [65]

Answer:

w > -15

Step-by-step explanation:

(w/5-5>-8)5

w-25>-40

w>-40+25

w > -15

3 0
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-5 = 1 / 3 ( -1 - w )<br> plz help with step by step answer
sweet [91]

Step-by-step explanation:

- 5 =  \frac{1}{3} ( - 1 - w) \\  \frac{1}{3} ( - 1 - w) =  - 5 \\   - 1 - w =  - 5 \div    \frac{1}{3}  \\  - 1 - w =  - 5 \times 3 \\  - 1 - w =  - 15 \\  - w =  - 15 + 1 \\   - w =  - 14 \\ w = 14

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3 years ago
If a vector's magnitude is 36 units right and 33 units up, what's the approximate magnitude of a vector that's one-third the len
omeli [17]

Answer:

The correct option is B. 16.3

Step-by-step explanation:

We are given a vector with components

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|V| = 48.836

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2 years ago
In a simple regression analysis (where y is a dependent and x an independent variable), if the y-intercept is positive, then it
Rom4ik [11]

Answer:

m=\frac{S_{xy}}{S_{xx}}  

Where:  

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}  

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}  

\bar x= \frac{\sum x_i}{n}  

\bar y= \frac{\sum y_i}{n}  

And we can find the intercept using this:  

b=\bar y -m \bar x  

On this case the correct answer would be:

E.  none of the above

Since the intercept has no association between the increase/decrease of the dependent variable respect to the independent variable

Step-by-step explanation:

Assuming the following options:

A.  there is a positive correlation between X and Y

B.  there is a negative correlation between X and Y

C.  if X is increased, Y must also increase

D.  if Y is increased, X must also increase

E.  none of the above

If we want a model y = mx +b where m represent the lope and b the intercept

m=\frac{S_{xy}}{S_{xx}}  

Where:  

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}  

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}  

\bar x= \frac{\sum x_i}{n}  

\bar y= \frac{\sum y_i}{n}  

And we can find the intercept using this:  

b=\bar y -m \bar x  

On this case the correct answer would be:

E.  none of the above

Since the intercept has no association between the increase/decrease of the dependent variable respect to the independent variable

3 0
2 years ago
The product of thirteen and a number
HACTEHA [7]
13x because you are saying the product of 13 that means 13x
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3 years ago
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