I need help!! i don't understand this

Answer:

y = -25x + 170

Step-by-step explanation:

For the graph equation y = ax + b, we have to find a and b.

Pick two points that are on the grid for best accuracy.

e.g., (2,120) and (6,20)

Then a = (20-120)/(6-2) = -25

b is the y coordinate of the line with the y axis: 170

So the formula is:

y = -25x + 170

The monthly rent during the 8th year of living in the apartment will be $2160.

A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.

You rent an apartment that costs $800 per month during the first year, but the rent is set to go up by $170 per year.

Then the monthly rent during the 8th year of living in the apartment will be

Let y be the monthly rent and x be the number of years.

Then we have

y = 170x + 800

The rent after 8 years, then the rent will be

y = 170 × 8 + 800

y = 1360 + 800

y = $ 2160

Thus. the monthly rent during the 8th year of living in the apartment will be $ 2160.

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9514 1404 393

Answer:

  y = -4x +9

Step-by-step explanation:

The same slope-intercept equation can be used, but with a different y-intercept. That new y-intercept can be found from the given point (x, y) using the formula ...

  b = y -mx

  b = 5 -(-4)(1) = 9

So, the equation with the new y-intercept is ...

  y = -4x +9

Answer:

x=-36

Step-by-step explanation:

x+1=-35 (divide both sides by 5)

x=-36 (subtract 1 from each side)

Answer:

(-3,2)

Step-by-step explanation:

Eliminate the equal sides of each equation and combine

5x + 17 = -2x - 4

Solve

x = -3

Evaluate  y  when  x  =  − 3 .

y = 2

(-3,2)

hope this helps :)

Answer:

I think that the correct answer is D 3(2x + 4) = 6x + 12

3(2x + 4) = 6x + 12 illustrates the Distributive Property. Correct option is D.

The Distributive Property states that when you multiply a number by a sum or difference inside parentheses, you distribute the multiplication across each term inside the parentheses.

The correct illustration of the Distributive Property among the given options is:

D. 3(2x + 4) = 6x + 12

This is because when you distribute 3 across 2x and 4, you get 6x for the first term (3 * 2x) and 12 for the second term (3 * 4), resulting in 6x + 12.

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Answer:

Step-by-step explanation:

It's 205

The best prediction of the time required for the oil spill to reach a diameter of 10 km will be 147 days. Then the correct option is A.

The quadratic equation is given as ax² + bx + c = y. Then the degree of the equation will be 2.

The table shows the connection between the width in kilometers of an oil slick and the time in days. A capability can be utilized to show this relationship.

The equation at (2.4, 1) will be given as,

2.4 = a (1)² + b (1) + c

2.4 = a + b + c                 ...1

The equation at (9.4, 2) will be given as,

9.4= a (2)² + b (2) + c

9.4 = 4a + 2b + c                 ...2

The equation at (21.1, 3) will be given as,

21.1 = a (3)² + b (3) + c

21.1 = 9a + 3b + c                 ...

Solve equations 1, 2, and 3 with the calculator, then we have

a = 2.35, b = -0.05, c = 0.1

Then the equation is given as,

y = 2.35x² - 0.05x + 0.1

The best prediction of the time required for the oil spill to reach a diameter of 10 km will be

y = 2.35(10)² - 0.05(10) + 0.1

y = 235 - 0.5 + 0.1

y = 235.5

The value of y is nearer to the value of 233. Then the value of y will be 233 days.

The best prediction of the time required for the oil spill to reach a diameter of 10 km will be 233 days. Then the correct option is D.

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The complete question is given below.

The table shows the relationship between the diameter of kilometers of an oil spill and the time in days. A function can be used to model this relationship.

What is the best prediction of the time required for the oil spill to reach a diameter of 10 km?

A) 147 days

B) 200 days

C) 205 days

D) 233 days

Answer:

d) 3

Step-by-step explanation:

7x+4=25

7x=21

X=3

Answer: D. 3

Step-by-step explanation:

Given

7x+4=25

Subtract 4 on both sides

7x+4-4=25-4

7x=21

Divide 7 on both sides

7x/7=21/7

x=3

Hope this helps!! :)

Please let me know if you have any questions

Answer:

7x-7=14

7x=14+7

7x=21

x=21/7

x=3

Step-by-step explanation:

Hope it helps you

Answer:

[tex]1 \sqrt{2}[/tex]

Answer: 24 commercials

Step-by-step explanation: An hour is 60 minutes. She'll watch 120 minutes of the game. 120 divided by 5 is 24. Good luck! :D

Answer:

0.75 : 1

Step-by-step explanation:

Answer:

749.79

Step-by-step explanation:

147 minutes = 2 and 27/60 hours

8.5% times 2 and 27/60 = 0.20825 or 833/4000

750 - 0.20825 = 749.79175

749.79175 to the nearest hundredth = 749.79

Hope this helps.

Answer:609

Step-by-step explanation:

Answer:

80 x by the power of 5 and y is by the power of 3

Answer:

80x⁵y³

Step-by-step explanation:

5x³y(-4xy)²

=5x³y*16x²y²

=80x⁵y³.

Answer: y=-1/2x+58, decreases 500, begins, 58k

Step-by-step explanation:

I'm not too sure about my equation for the word problem but I can explain how I got it.

The equation is in y=mx+b format, so we need to find the slope. They gave us the graph for a reason. You would take each side of the table and subtract/add. For example: 58-53=-5 (y), 0+10=10 (x).

Then, just put that in rise over run (-5/10).

Simplify. Which gives you -1/2.

They already gave us the y-intercept, so just put it into the equation. y=-1/2x+58.

Keep in mind I don't know if you need to add the 0's because it's thousands of feet, I would just in case though. Hoped this helped!

The equation can be given as  [tex]y= -\frac{1}{2}x +58[/tex], and slope for x and y is m that is [tex]\dfrac{-1}{2}[/tex].

Given to us,

x is time in minutes

y is the height (in thousands of feet) of the UAV

x                      y

0                      58

10                    53

20                   48

30                   43

The equation can be given as y = mx+ c

where,

x is time in minutes,

y is the height,

m is the slope,

c is the constant,

Substituting the values of x and y to get m and c,

Equation 1:

[tex]y = mx+ c\\ 58 = m(0) + c \\ c = 58[/tex]

Substituting the values of c to get m,

Equation2:

[tex]y = mx+ c\\53 = m(10) + 58\\m\times (10) = - 58 + 53\\m\times (10) = -5\\m =- \frac{1}{2}[/tex]

[tex]y= -\frac{1}{2}x +58[/tex]

Therefore, the equation can be given as  [tex]y= -\frac{1}{2}x +58[/tex], and slope for x and y is m that is [tex]\dfrac{-1}{2}[/tex].

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Answer:

Its 2πr^2

Step-by-step explanation:

[tex]2\pi {r}^{2} [/tex]

Answer:

C. x=-2

Step-by-step explanation:

To solve use PEMDAS,

First, distribute

6-x=20+4x-4

Then, combine like terms

6-x=16+4x

Add x to both sides

6=16+5x

Subtract 16 from both sides

-10=5x

Divide both sides by 5

-2=x

Answer:

1/10

Step-by-step explanation:

Bob has 1/2

1/2 divided by 5 = 0.1

0.1 = 1/10

Each friend gets 1/10.

Answer:

4 ballons per basket because

80 ballons divided by 20 baskets is 4

Step-by-step explanation:

Answer:

Step-by-step explanation:

4 balloons per gift basket

4,610 divided by 16 is 288.125

Work:

Answer:

You can try the last one by yourself. If you need help on that I will help you, but remember that plug in all the answer choices, so that you can know if it has one solution, infinite solution, or no solution. Hope this helps, thank you !!

Answer:

My estimate is D:21

Step-by-step explanation:

so sorry this answer will be 75% wrong, let me explain how i got this answer

the perimeter of triangle ADE is 12 units

Triangle ABC looks like 2 times the triangle ADE , 12 + 12 = 24 and the closest answer was D: 21

I hope i helped you in some way!

Answer:

D.21

Step-by-step explanation:

AC=8

AB=8

BC=5

Add all the sides

=21

Answer:

slope is -1/4

Step-by-step explanation:

slope formula: (y₂ - y₁) / (x₂ - x₁)

(1 - 3) / (6 - (-2))

Simplify.

(-2) / 8

Simplify.

-1/4

Answer:What is the median of a triangle? If you find the middle of any side of a triangle, you have found its midpoint. From that midpoint, you can construct a line segment to the opposite interior angle. That constructed line from the midpoint of a side to the opposite interior angle is a median.

Step-by-step explanation:

Answer:

What is the median of a triangle? If you find the middle of any side of a triangle, you have found its midpoint. From that midpoint, you can construct a line segment to the opposite interior angle. That constructed line from the midpoint of a side to the opposite interior angle is a median.

Step-by-step explanation:

Answer:

131.88cm

Step-by-step explanation:

Implement the formula for circumference of a circle:

2×pi(3.14)×r, r= 21cm and pi is given as 3.14. Substitute your given values into the formula above:

2 × 3.14 × 21= 131.88cm to the nearest hundreth

Answer:

1.02n should be the answer

Another way to represent Hal's pay per hour is n + (2/100)n after the raise.

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

Given, Hal earns n dollars per hour.

Next month he will receive a 2% raise in pay per hour.

The expression n + 0.02n is one way to represent Hal’s pay per hour after the raise.

Another way to represent Hal's pay per hour is n + (2/100)n after the raise.

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Answer:

x-4=y

Step-by-step explanation:

im pretty sure

Answer: 2²/₃ pounds

Step-by-step explanation:

There are 8 pounds of fruit.

These are to be used to make 3 equal sized fruit salad.

The weights of each fruit salad will therefore be:

= Pounds of fruit/ Number of fruit salads

= 8 / 3

= 2²/₃ pounds