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ANTONII [103]
3 years ago
9

Quiz consists of 60 true or false questions. If the student guesses on each​ question, what is the standard deviation of the num

ber of correct​ answers? Round to the nearest thousandth.
2 0r 3.873 or 0 or 5.477
Mathematics
1 answer:
anyanavicka [17]3 years ago
6 0

Answer:

5.477 ok my friend oooooo

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Evaluate<br> 4(x+5)(2+1)<br> (2+3)(2-3)<br> for x = 5.
zaharov [31]

Answer:

-600

Step-by-step explanation:

4 x 10 x 3 x 5 x -1

40 x 15 x -1

600 x -1 = -600

7 0
2 years ago
WILL UPVOTE
amm1812
X=6 you need to multiply by 2
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You have a cell phone that is 5 inches in height, 0.5 inches in width, and 2.5 inches in length, what is the surface area in sq
fenix001 [56]
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I multiplied all the sides (ex 0.5x2.5x2) and did that with all the other sides
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3 years ago
ASAP IM BEING TIME PLEASE!!
andre [41]

x° = 14°, y° = 14°; Use vertical and supplementary angles.

Step-by-step explanation:

The image of the answer is attached below.

In the given image two lines are parallel with transversal.

(9x + 12)° and ∠1 are vertically opposite angles.

Vertically opposite angles are equal.

∠1 = (9x + 12)°

Consecutive interior angles are supplementary.

(9x + 12)° + 3x° = 180°

⇒ 12x° = 168°

⇒ x° = 14°

Sum of the adjacent angles in a line are supplementary.

3x° + (4y – 10)° = 180°

⇒ 3(14)° + 4y° – 10° = 180°

⇒ 4y° = 148°

⇒ y° = 14°

Hence, x° = 14°, y° = 14°; Use vertical and supplementary angles.

6 0
3 years ago
Look at the diagram, how do you know that y is not directly proportional to x.
lesya [120]

Step-by-step explanation:

If y was directly proportional to x, the graph of y against x would pass through the origin (O).

Since the graph above does not show this, y is not directly proportional to x.

7 0
2 years ago
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