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andrew-mc [135]
3 years ago
12

The points (-9,f) and (-10,5) has a slope of 3. What is the value of f?

Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
5 0
Slope formula: (y2-y1)/(x2-x1)
(5-f)/(-10-(-9)) = 3
(5-f)/(-1) = 3
5 - f = -3
-f = -8, f = 8
Solution: f = 8
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Answer:

El porcentaje de descuento fue del 10%.

Step-by-step explanation:

Para encontrar el porcentaje de descuento, puedes calcular la variación entre los dos precios ya que este será el porcentaje aplicado. Para hacerlo debes calcular la diferencia entre los dos precios restando el precio final menos el precio original y luego, debes dividir este resultado entre el precio original y multiplicar por 100:

Precio original=50

Precio final=45

((45-50)/50)*100

(-5/50)*100=-0.1*100=-10%

De acuerdo a esto, la respuesta es que el porcentaje de descuento fue del 10%.

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2 years ago
How i can answer this question, NO LINKS, If you answer correctly I will give u brainliest!
SOVA2 [1]

Answer:

Step-by-step explanation:

We want to make equation into slope intercept form.

Like this: y=mx+b

(mx and b are interchangeable)

Step 1) Convert equation

8x-5y=-11

Sub Step a) subtract 8x on both sides

8x-5y=-11 => -5y = -11-8x

-8x      -8x

Sub step b) get y alone

-5y/-5 = -11/-5 - 8x/-5

Equation: y = 11/5 + 8x/5

Step 2) Y-intercept

B is the y-intercept.

B = 11/5

y-intercept is (0,11/5)

Step 3) X-intercept

Substitute 0 for y in our equation

0=11/5+8x

Subtract 8x on both sides

-8x = 11/5

Divide by -8 on both sides

x = -11/40

x-intercept is (-11/40,0)

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2 years ago
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3 years ago
Harry has a penny collection with 160 pennies. He plans to increase the size of his collection by a constant term each year for
mel-nik [20]

Answer:

  • A: Harry plans to have approximately 350 pennies at the end of the second year

  • B: Harry plans to have approximately 1,200 pennies at the end of his five-year plan.

  • C: Harry plans to increase his collection by approximately 1,050 pennies over the five-year period.

  • D: Harry will add approximately 250 pennies to his collenction d during the fourth year, according to his plan.

  • E: The coordinates of the point are (3.5, 400)

  • F: Harry will need to add approximately 150 more pennies more than what he had planned by the end of the fourth year, to get back on the plan.

Explanation:

The first thing I did was to write the numbers to the grid and add the points labeled with the letter of the question with which they are related.

  • Every mark on the x-axis corresponds to 1 year.

  • Every mark of the y-axis corresponds to 200 pennies.

See the graph attached.

Question A:

The y-coordinate of the green point labeled A is about half way between 300 and 400, i.e. 350.

Then, Harry plans to have approximately 350 pennies at the end of the second year

Question B:

The green point labeled B has coordinates (5, 1200), meaning that Harry plans to have approximately 1,200 pennies at the end of his five-year plan.

Question C:

Harry started his collection with approximately 150 coins. It is the y-coordinate (the value when x = 0): (200 - 100)/2 = 150.

Thus, Harry plans to increase his collection by approximately 1,200 - 150 = 1,050 pennies over the five-year period.

Question D:

The number of peenies that Harry will add to his collection during the fourth year, according to his plan, is the difference between the number of pennies at the end of the fourth year and the end of the third year.

The green point labeled D has coordinates (4, 800) meaning that his plan is to have approximately 800 pennies.

To find the number of pennies that Harry plans to have at the end of the third year  read the y-coordinate that meets the curve when x = 3. That is approximately (600 + 500) / 2 = 550.

The difference is 800 - 550 = 250 pennies.

Therefore, Harry will add approximately 250 pennies to his collenction d during the fourth year, according to his plan.

Question E:

The blue point labeled E shows the position on the grid of the 400 pennies halfway throuhg the fourth year.

The coordinates of this point is (3.5, 400).

Question F:

According to the plan, the number of pennies at the end of the fourth year would be 800 (green point labeled D on the graph).

Then, Harry will need to add approximately 800 - 400 = 400 pennies.

According to the plan the number of coins at the end of the third year would be

But the plan was to add 800 - 550 = 250.

Thus, Harry will need to add 400 - 250 = 150 more pennies than he had planned, during the fourth year.

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3 years ago
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Hi, does anyone know the answer to this question? I’m bad at geometry and I’m struggling to answer it.
pashok25 [27]

Answer:

4th option

Step-by-step explanation:

Given

A (- 5, 13 ) → A' (2, 9 )

- 5 → 2 → + 7 in the x- direction

13 → 9 → - 4 in the y- direction

The translation rule is

(x, y ) → (x + 7, y - 4 ) , then

B (4, - 2 ) → B' (4 + 7, - 2 - 4 ) → B' (11, - 6 )

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2 years ago
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