Help please! I don't understand these...

Answers

Answer 1

Answer: number 4 (as asked in comments)

57 degrees
21 legnth shadow
drwa diagram

remember
SOHCAHTOA
we need last one
tan of angle=oposite angle/ajacent
oposite angle=height=?
ajacent=21
angle=57
tan(57)=?/21
multiply both sides by 21
21tan(57)=?
use calculator
32.3372 m
h=32.3372m (round if nececary)

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PLEEESE HELLLLLLP If you have a test average of 92 and a standard deviation of 1.8, you generally do well on tests.t f

Answers

Yes, that's true PROVIDED your test scores are normally distributed.

If they are, then more than 99% of your test scores are within three
standard deviations of the mean.

You told us that 3-sigma = 5.4 . So less than one score out of every
hundred tests you take is lower than 86.6 or higher than 97.4 .

You are remarkably consistent, so I guess Jupiter must have been
in its ascendancy next door to the house of Andromeda about an
hour before you were born, or some such nonsense.

The mean 8,17,9,3,13

Answers

The mean is the average. To find the mean, you add the numbers and divide by the number of numbers. 8 + 17 + 9 + 3 + 13 = 50. 50 divided by 5 is 10. Therefore the mean is 10.

8+17+9+3+13=50
50 divide by 2
answer: 25

1) Which line has a negative slope?2) Which line has a slope of zero

3) Which line has a y- intercept at (0, -2) ?

4) Which line has a slope of 1/2

5) Which line is the graph of the equation y = 3x

6) Which line is the graph of the equation y = x + 3?

Answers

1.line a
2.line c
3.line c
4.line b
5.line d
6.line a

Answer:

C has a slope of zero

B has slope 1/2

Which is greater -6 or -3

Answers

-3 is greater than -6

Express 7.4 x 10² in standard form.

MATH

Answers

10^2 = 100

7.4 × 10^2 = 7.4 × 100 = 740

Answer: 740

Answer:

7.4 x 10²

7.4 *100

740

Step-by-step explanation:

Suppose you want to represent a triangle with sides 12 feet, 16 feet, and 18 feet on a drawing where 1 inch = 2 feet. How long should the sides of the triangle be in inches?The sides of the triangle on the drawing should be _____.

Answers

Answer: The sides of the triangle on the drawing should be 6 inches, 8 inches, and 9 inches.

Step-by-step explanation:

Given: A triangle with sides 12 feet, 16 feet, and 18 feet on a drawing where 1 inch = 2 feet.

Then, 1 feet of original triangle = $(1)/(2)$ inch on drawing.

Now, the sides of the triangle on the drawing are:-

12 feet = $(1)/(2)*12=6\text{ inches}$

12 feet = $(1)/(2)*16=8\text{ inches}$

12 feet = $(1)/(2)*18=9\text{ inches}$

Hence, the sides of the triangle on the drawing should be 6 inches, 8 inches, and 9 inches.

the sides of the triangle would be 6 inches, 8 inches, and 9 inches long