MATHEMATICS HIGH SCHOOL

Please help me!! 1. In the equation y = 25x, what is the constant of variation?

A. 25
B. 1/25
C. Zero
D. Undefined

2. In the equation of y = 25x, the number 25 also represents what?

A Rate of change
B the y - intercept
C the x-intercept

In the equation y = -4x, what is the constant of variation?

A. 4
B. zero
C. -4
D. undefined

4. The value of y varies directly with x and the constant of variation is 5. What is the value of x when y = 100? *
25
95
4
20

5. The value of y varies directly with x and the constant of variation is 13. What is the value of y when x = 6? *
A. 78
B. 2.16
C. 0.46
D. zero

The height of a stack of boxes varies directly with the number of boxes. A stack of 10 boxes is the 20 feet high. How tall is a stack of 18 boxes? *
9 feet
5 feet
36 feet
40 feet

Perry's pay is in direct variation to the hours she works. Perry earns $84 for 14 hours. How much will she earn for 24 hours? *
A. $ 144
B. $120
C. $2, 016
D. $336
Submit

Answers

Answer 1

Answer:

Answer:

1. 25

2. Rate of Change

3. zero

4. 20

5. 2.16

6. 36ft

7. $144

Hope this helps

I dont know if all of these are right if not let me know

Answer 2

Answer:

Answer:

1. Since the equation can be written in the form y=kx y = k x , y varies directly with x and k . The constant of variation, y , is 5 .

Step-by-step explanation:

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168 newspaper per week equal newspaper per hour ?

What are the trigonometric ratios

Answers

The trig ratios are a set of numbers that are properties
of every angle.

When the angle is in a right triangle, they can be defined
like this:

Sine (sin) of the angle: (opposite leg) divided by (hypotenuse)
Cosine (cos) of the angle: (adjacent leg) divided by (hypotenuse)

Tangent (tan) of the angle: (opposite leg) divided by (adjacent leg)
Cotangent (cot) of the angle: (adjacent leg) divided by (opposite leg)

Secant (sec) of the angle: (hypotenuse) divided by (adjacent leg)
Cosecant of the angle: (hypotenuse) divided by (opposite leg).

The size of the right triangle doesn't matter, only the ratios of
pairs of sides. That will always be the same number for the
same angle, no matter how big or small the triangle is.

There's no easy way to calculate the numbers for an angle.
You just have to look them up, using tables in books, or online
(try 'cosine 29' on Google), or on most hand-calculators.

The trigonometric ratios are special measurements of a right triangle (a triangle with one angle measuring 90 ° ). Remember that the two sides of a right triangle which form the right angle are called the legs, and the third side (opposite the right angle) is called the hypotenuse.

Find x when y =18, if y = 5 when x = 4

Answers

Answer:

14.4

Step-by-step explanation:

x=18

if x=4 then y=5

18/5= 3.6

therefore x= 4 times 3.6 or 14.4

B(x) = 7x + 3 and h(x) = 9x - 1.
Find (b+h)(x)

Answers

(b+h)(x)=16x+2

Since we all know the theory that shows that a(x)+b(x)=(a+b)(x), we can use that in this problem. Simply simplify the problem and divide it into 2... b(x) plus h(x). This is simple as we already know the values of these variables so just add both and the sum will be the answer to your problem.

When isolating a variable in the equation -3y=2x-7, how do you get rid of the -3 in front of the y?

Answers

Answer: You divide both sides by -3.

Step-by-step explanation:

We're asked to solve the equation: $\sf{-3y=2x-7}$ .

To do this, divide both sides by -3:

$\sf{-3y=2x-7}$

$\sf{y=\cfrac{2x-7}{-3}$

Simplify

$\sf{y=-\cfrac{2x-7}{3}}$

Therefore, that's our answer.

Answer:

divide both sides by - 3

Step-by-step explanation:

given the equation

- 3y = 2x - 7

to isolate y then divide both sides by - 3

$(-3)/(-3)$ y = $(2x-7)/(-3)$ , that is

y = $(2x-7)/(-3)$

y = $(2)/(-3)$ x + $(-7)/(-3)$ = - $(2)/(3)$ x + $(7)/(3)$

In a relay race, the probability of the Galaxy team winning is 22%. In another unrelated relay race, the probability of the Komets team winning is 47%. If the possibility of a tie is not an option, the probability of the Komets losing their race and the Galaxy winning theirs is ?%

Answers

Answer: There is 12% chance that Komets losing their race and the Galaxy winning theirs.

Step-by-step explanation:

Since we have given that

Probability that Galaxy team winning = 22%

Probability that Komets team winning = 47%

Probability that Komets team losing = 100-47=53%

We need to find the probability of the Komets losing and Galaxy winning their game.

So, Probability that Komets losing and Galaxy winning their game is given by

$(22)/(100)* (53)/(100)\n\n=(1166)/(10000)\n\n=0.1166\n\n=0.12=12\%$

Hence, there is 12% chance that Komets losing their race and the Galaxy winning theirs.

The total number of laps needed to complete a bike marathon is 75. Kayla completed at least 68 laps. How many possible complete laps could Kayla have completed. Please show work. I'm offering lots of points for this question. Thanks you guys.

Answers

well she needs to complete 75 laps to complete the race so 75 is the upper limit. She has completed at least 68 laps so the lower limit is 68. so the number of laps she could have completed could be from 68 to 75 so the number of laps (x) can be reprented by this inequallity 68 < x < 75

well, I'm not sure if this is correct, it probably isn't, and I'm sorry if it isn't, but i think kayla could have completed 75 laps because there was only 75 laps in the race.

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