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2 years ago

Help pls due in 5 minutes

Mathematics

1 answer:

coldgirl [10]2 years ago

4 0

Answer:

Step-by-step explanation:

$2(\frac{7\times 6}{2})+3(13.1\times 7)$

ANSWER IS D

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An amusement park charges a $15 entrance free plus $3.25 for each ride. Part A: Write an equation that represents the situation.

IceJOKER [234]

Answer:

Look below

Step-by-step explanation:

Part A: Equation would be in the y=mx+b format. m, or the slope, would be the cost that varies depending on the number of things that happen so m=3.25. b would be the fix cost so it is 15 so the equation ends up being y=$3.25x + $15.

Part B: Initial value is 15 since it is the fix cost, and 3.25 is the rate of change since it added as the number of rides increase.

Part 3: To solve this you substitute 7 into x so y=$3.25(7) + $15 = $37.75

I hope this explains it well.

7 0

3 years ago

A recipe for chili calls for 5 pounds of ground beef for 18 people. How many pounds of ground beef are needed for 50 people

tatyana61 [14]

The answer is a repeating decimal of 13.888... round accordingly.

Set up the proportion 5/18 = x/50 18x=250 Solve for x

4 0

2 years ago

A line is perpendicular to y = {2/3x + 2/3}

Anna35 [415]

Answer: y = (-3x/2) + 1

Step-by-step explanation:

From the standard equation y = mx + c, the slope of the equation is 2/3. Therefor slope of a line perpendicular to it will be -3/2.

Hence the equation will be

y = (-3x/2) + c

As this line passes through (-2,4), putting these values in this equation gives c = 1.

Hence the answer is y = (-3x/2) + 1

3 0

2 years ago

The height h in feet of a ball thrown vertically upward from the top of a 288-foot tall building is given by h=288+48t-16t^2 whe

mr Goodwill [35]

6 sec can take penny to strike the ground.

Solution:

Given data:

$H_0=288$ feet

$V_0=48$ feet

$h(t)=288+48t-16t^2$

Re-arrange the terms from greatest degree to smallest degree.

$h(t)=-16t^2+48t+288$

We can solve it by applying quadratic formula,

$$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

Here a = –16, b = 48, c = 288

$$t=\frac{-48\pm \sqrt{48^2-4(-16)(288)}}{2(-16)}$

$$t=\frac{-48\pm \sqrt{2304+18432}}{-32}$

$$t=\frac{-48\pm \sqrt{20736}}{-32}$

$$t=\frac{-48\pm144}{-32}$

Now, write find two t's using plus and minus operation.

$$t=\frac{-48+144}{-32},\ \ t=\frac{-48-144}{-32}$

$$t=\frac{96}{-32},\ \ t=\frac{-192}{-32}$

t = –3 (or) t = 6

We cannot write time is negative. so neglect t = –3.

Therefore t = 6.

Hence 6 sec can take penny to strike the ground.

8 0

2 years ago

What is the slope of a line parallel to the line with equation 5x 3y=7?

adell [148]

-5/3
down 5, over 3
:)

6 0

3 years ago