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zhuklara [117]
2 years ago
8

A student skipped a step when she tried to convert 15 hours to seconds, and she got the following incorrect result:

Mathematics
1 answer:
givi [52]2 years ago
7 0

1hr/3600sec=15hr/x

(3600sec)(15hr)=(1hr)x

x=54000seconds

15 hours is 54000 seconds

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Calaveras county in California imposes a 7.25% sales tax on goods purchased in that county. How much tax is imposed on a $56.96
MrRa [10]
The tax is 7.25% of $56.96.

7.25% of $56.96 =

= 7.25% * $56.96

= 0.0725 * $56.96

= $4.1296

The answer rounds to $4.13
4 0
2 years ago
Solving each proportions 10/8=n/10
RideAnS [48]

Answer:

n=12.5

Step-by-step explanation:

10/8=n/10

multiply the denominator and numerators 10 ad 10=100 divide by 8=12.5

3 0
2 years ago
P(x) is a polynomial with integer coefficients and p(-3) = 0.
natka813 [3]

Answer:

x + 3 is a factor of the polynomial.

Step-by-step explanation:

We have been given that p(x) is a polynomial with integer coefficient.

Also p(-3)=0

Since, p(-3) =0, hence, we can say that -3 is a zero of the polynomial.

Now, we apply factor theorem.

Factor Theorem: If 'a' is a zero of a function f(x) then (x-a) must be a factor of the function f(x).

Applying this theorem, we can say that (x+3) must be a factor of the polynomial.

Hence, first statement must be true.

5 0
3 years ago
Read 2 more answers
Cassandra wants to solve the equation 30=2/5p.Whta operation should she perform to isolate the variable?
frosja888 [35]
Well, if you want to get p by itself, you will have to multiply both sides by 5/2. 2/5 times 5/2 gives you 1p, or just p. 
4 0
3 years ago
Read 2 more answers
If the standard deviation of a set of data is zero, what can you conclude about the set of values? The sum of the deviations fro
Rashid [163]

Answer:

All values are identical.

Step-by-step explanation:

We are given the following in the question:

If the standard deviation of a set of data is zero.

Then, all the values in data are identical.

This can be shown as:

Let all the terms in data be x.

Formula:

\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n}}  

where x_i are data points, \bar{x} is the mean and n is the number of observations.  

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

Mean =\displaystyle\frac{nx}{n} = x

Sum of squares of differences =

\displaystyle\sum (x_i - x)^2 = 0

\sigma = \sqrt{\frac{0}{n}} = 0

Thus, the correct answer is

All values are identical.

3 0
3 years ago
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