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Likurg_2 [28]
2 years ago
7

Could use some help with this math xl problem ​

Mathematics
1 answer:
noname [10]2 years ago
8 0
Make the picture bigger, can barely see it
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Given that ƒ(x) = x² + 5x, evaluate ƒ(-2).<br><br> -6<br> -14<br> 7
Iteru [2.4K]

f(-2) means replace x in the equation with -2, then solve:

-2^2 +5(-2)

Simplify:

4 + -10

Add:

-6

3 0
3 years ago
Sum of two positive number is always
Dafna1 [17]
The dune of two positive numbers is always positive. I hope this helps
3 0
3 years ago
What is true of the coefficient of​ variation?
DedPeter [7]

Answer:

A. The coefficient of variation is best used when comparing two data sets that use the same units of measure.

Step-by-step explanation:

The coefficient of variation (CV), is simply the standard deviation (itself a measure of variance or variation) relative to the mean of a distribution.

The coefficient of variation expresses a random variable’s variability in percentage terms. Therefore it is possible, through the coefficient of variation, to compare the variability of data across different samples, especially if the random variables are recorded in different units of measurement (such as cm, kg and minutes).

A coefficient of variation is always interpreted as a percentage. <u>Mathematical representation is:</u>

Coefficient\ of\ variation\ = \frac{Standard\ deviation}{Mean}\ \%

The coefficient of variation is best used when comparing two data sets that use the same units of measure.

Hence, the option (A) is the correct option.

5 0
3 years ago
If sin 0 = 7/25, find csc 0
kipiarov [429]

Answer:

csc(\theta)=\frac{25}{7}

Step-by-step explanation:

We know that:

sin(\theta)=\frac{7}{25}

And we want to find:

csc(\theta)

Remember that there is a trigonometric identity that relates the sin(\theta) function with the csc(\theta) function

csc(\theta)=\frac{1}{sin(\theta)}

Then if sin(\theta)=\frac{7}{25} this means that:

csc(\theta)=\frac{1}{\frac{7}{25}}

Finally:

csc(\theta)=\frac{25}{7}

3 0
3 years ago
Read 2 more answers
PLEASE HELP !! ILL GIVE BRAINLIEST !! 100 POINTS
muminat

Answer:

6280 mm squared

Step-by-step explanation:

To find the area Of a cylender we multiply pi times r squared times the height, and we can put pi as 3.14

the radius is 10 mm, and the height is 20 mm.

pug it in.

3.14 times 10 squared times 20.

3.14 time 100 time 20

314 times 20

6280 mm squared

8 0
2 years ago
Read 2 more answers
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