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3 years ago

What does the arrow represent?

Mathematics

1 answer:

docker41 [41]3 years ago

3 0

Answer:

b number is the correct answer of the question

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Five people come to a party and shake hands with each other. If each person shakes the hand of every other person, how many han

borishaifa [10]

Answer:

Step-by-step explanation:

5 0

3 years ago

An exam worth 388 points contains 65 questions. Some questions are worth 4 points and the others are worth 8 points. How many 4

BaLLatris [955]

Answer:

33 questions.

Step-by-step explanation:

Let x = 4 points questions.

Let y = 8 points questions.

Translating the word problem into an algebraic equation;

For the total number of questions;

$x + y = 65$ .........equation 1

For the total number of points;

$4x + 8y = 388$ ..........equation 2

Given the following data;

Total number of questions = 65

Total number of points = 333

Solving the linear equation by using the substitution method;

Making x the subject in equation 1:

$x = 65 - y$ .......equation 3

Substituting "x" into equation 2;

$4(65 - y) + 8y = 388$

Simplifying the equation, we have;

$260 - 4y + 8y = 388$

$260 + 4y = 388$

Rearranging the equation, we have;

$4y = 388 - 260$

$4y = 128$

$y = \frac {128}{4}$

y = 32 (For the 8 points question).

Substituting "y" into equation 3;

$x = 65 - 32$

x = 33 (For the 4 points question).

Therefore, the number of 4 point questions on the test are 33 questions.

8 0

3 years ago

State the correct polar coordinate for the graph shown:

ANTONII [103]

Answer:

Solution : ( - 8, - 5π/3 )

Step-by-step explanation:

There are four cases to consider here, the first two with respect to r > 0, the second two with respect to r < 0. For r < 0 we have the coordinates ( - 8, 60° ) and ( - 8, - 300° ) . - 300° in radians is - 5π/3, and hence our solution is option d. But let me expand on how to receive the coordinates. Again r is the directed distance from the pole, and theta is the directed angle from the positive x - axis.

So when r is either negative or positive, we can tell that this point is 8 units from the pole. Therefore - r = - 8 in both our second cases ( we are skipping the first two cases for simplicity ). For r < 0 the point will lay on the ray pointing in the opposite direction of the terminal side of theta.

Our first coordinate is ( - 8, 60° ). Theta will be 2 / 3rd of 90 degrees, or 60 degrees, for - r. Respectively the remaining degrees will be negative, 360 - 60 = 300, - 300. Our second point for - r will thus be ( - 8, - 300° ) . - 300° = - 5π/3 radians, and our coordinate will be ( - 8, - 5π/3 ).

8 0

3 years ago

PLEASE HELP ASAP ! ! ! ! 30 POINTS AND BRAINLIEST

Aleks [24]

to get the answer of this question you will use one of the trigonometric functions which is the sine
so since sin(x°)=66/79
therefore m(<x°)=56°39'

8 0

4 years ago

If Aria's plane traveled at a constant speed of 275 miles per hour for 9 hours, how far did the plane travel?

Sveta_85 [38]

Answer:

Arias plane travled 2475 miles

Step-by-step explanation:

All you have to do is multiply 275 by 9

6 0

3 years ago

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