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ANTONII [103]
3 years ago
6

**100 POINTS**I WILL MARK AS BRAINLIEST IF YOU GET IT CORRECT!

Mathematics
2 answers:
Akimi4 [234]3 years ago
6 0

Answer:

As we know:

Direct variation => y = k*x, k is constant ( y/x = k = constant)

Inverse variation => y = k/x, k is constant (y*x = k = constant)

X - 1 2 5 10

Y - 6 12 30 60

Check the first 2 pair of X, Y:

(the remaining pair of value would show the same tendency)

X1 x Y1 = 1 x 6 = 6

X2 x Y2 = 2 x 12 = 24

=> X x Y is not a constant

=> Not an inverse variation.

=> B and D is incorrect

Otherwise, we have:

Y1/X1 = 6/1 = 6

Y2/X2 = 12/2 = 6

=> Y/X = 6

=> A direct variation with k = 6

=> y = 6x

=> Option C is correct

Hope this helps!

:)

Wewaii [24]3 years ago
4 0

Answer:

C. Direct variation; y = 6x

Step-by-step explanation:

Let's determine what direct and inverse variation are:

- Direct: y = kx, where k is any constant

- Inverse: y = k/x, where k is any constant

Here, let's look at the relationship between x and y. The first column is x = 1 and y = 6, so let's put that into y = kx and try:

y = kx

6 = k * 1

k = 6

Does this pattern continue? Check with the second column:

y = 6x

12 =? 6 * 2

12 = 12

This does work, and if you try all the other columns, they provide true statements, as well.

Thus, the answer is direct variation because y = 6x is of the form y = kx, and the equation is y = 6x because for every value of x, the y is 6 times that x value. The answer is C.

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You earn a base fee plus an hourly rate for running errands.You earn 20$ when it takes 1 hour to run the errands. You earn $35 w
beks73 [17]

Answer:

<em>The base fee is 5</em>

Step-by-step explanation:

<u>Linear Function</u>

The linear function is widely used to model real situations in life where the dependancy of one variable are linear by nature.

The problem gives us three conditions, more than enough to find a linear model for the earnings for running errands. Let's make x the number of hours it takes to run the errands, and y the earnings. The linear model has the general equation

y=mx+b

We have these points (1,20) (2,35) (3,50) and need to find the base fee, which is the value of b or the independant term of the equation.

We'll use the first two points to find the equation and the third point to verify it. Using (1,20)

20=1\cdot m+b

m+b=20

Now we use (2,35)

35=m\cdot 2+b

2m+b=35

Subtracting both equations

m=15

Replacing into the first equation

b=5

The equation is

y=15x+5

Let's test the formula by replacing the point x=3

y=15\cdot 3+5=50

The model is accurate and the base fee is 5

6 0
4 years ago
A herd of horses split and went to three areas. One fourth of the herd of horses was seen in the forest. Twice the square root o
melamori03 [73]

Answer:the total number of horses in the herd is 36

Step-by-step explanation:

Let x represent the total number of horses in the herd.

One fourth of the herd of horses was seen in the forest. This means that the number of horses that was seen in the forest would be

1/4 × x = x/4

Twice the square root of the herd had gone to the mountain slopes. This means that the number of horses that had gone to the mountain slopes would be

2 × √x = 2√x

Three times five horses remained on the riverbank. This means that the number that remained would be

3 × 5 = 15

Therefore

x/4 + 2√x + 15 = x

x - x/4 - 15 = 2√x

(4x - x - 60)/4 = 2√x

(3x - 60)/4 = 2√x

Cross multiplying,

3x - 60 = 8√x

Squaring both sides of the equation, it becomes

(3x - 60)(3x - 60) = 64x

9x² - 180x - 180x + 3600 = 64x

9x² - 360x - 64x + 3600 = 0

9x² - 424x + 3600 = 0

Applying the quadratic equation

x = (- b ±√b² - 4ac)/2a

x = ( - - 424 ± √-424² - 4(9 × 3600)/2 × 9

x = (424 ± √179776 - 129600)/18

x = (424 ±√50176)/18

x = (424 + 224)/18 or

x = (424 - 224)/18

x = 36 or x = 11.11

the number of horses must be whole number. Therefore, the number of horses is 36

5 0
3 years ago
Jose worked n hours at $8.75 per hours. He made $61.25.Which expression represents the total number of hour jose worked?
mariarad [96]

Answer:

8.75n = 61.25

Step-by-step explanation:

We multiply n, number or hours, times how much he makes per hour.

Therefore, it is 8.75n = 61.25

Hope this helps :)

8 0
3 years ago
What is the slope of the line on the<br> graph?
maxonik [38]
  • (0,4)
  • (6,2)

\\ \sf\longmapsto Slope=m=\dfrac{2-4}{6-0}

\\ \sf\longmapsto m=\dfrac{-2}{6}

\\ \sf\longmapsto m=\dfrac{-1}{3}

5 0
3 years ago
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Morgarella [4.7K]
9 total tomato plants  /  3 plants = 3

from the list of plants there are 3 squash plants

3 squash plants x 3 tomato plants = 9 total tomato plants

 the answer is Squash Plants

6 0
3 years ago
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