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3 years ago

Free 90 points enjoy(づ｡◕‿‿◕｡)づ

Mathematics

2 answers:

goldfiish [28.3K]3 years ago

7 0

Answer:

Ah yes december 2020

Step-by-step explanation:

I don't know

Nuetrik [128]3 years ago

5 0

Thanks a bunch. <3

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You are doing "interval training" around a 400-meter track. To do this, you sprint for 200 meters, jog for 100 meters and then w

Margarita [4]

Using proportions, it is found that it will take you 392 seconds = 6 minutes and 32 seconds to complete 4 laps.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

In this problem, considering the given rates, the time that is takes to complete one lap of 400 m is given by:

t = 2 x 12(sprint) + 24(half as fast as the sprint, 24 seconds per 100 meters) + 50 = 98 seconds.

Hence for 4 laps, the time is given by:

t = 4 x 98 seconds = 392 seconds = 6 minutes and 32 seconds to complete 4 laps.

More can be learned about proportions at brainly.com/question/24372153

#SPJ1

4 0

2 years ago

At first, you have 15 bottles of coke, and you drink 2 bottles each day. After a certain number of days, there are 3 bottles lef

julia-pushkina [17]

Answer:

After 6 days, 3 bottles will be left.

Step-by-step explanation:

Given that:

Number of bottles = 15

Number of bottles drank each day = 2

Let,

d be the number of days

y be the number of bottles left

y = 15 - 2d

Now,

We have to find the number of days when 3 bottles will be left.

Putting y=3

3 = 15 - 2d

2d = 15 - 3

2d = 12

Dividing both sides by 2

$\frac{2d}{2}=\frac{12}{2}\\d=6$

Hence,

After 6 days, 3 bottles will be left.

4 0

3 years ago

Dwayne wants to buy a jump rope that costs $4, a board game that costs $7, and a playground ball that costs $3. He has saved $9

Natali5045456 [20]

Answer:

he needs $1

Step-by-step explanation:

add 4+7+3=14 then your gonna add what he already has which is 9+4= 13 so 14-13=1

4 0

3 years ago

Read 2 more answers

The prism shown in the diagram has a volume of 39 units^3. What is the volume of the pyramid? Explain your reasoning. I WILL GIV

jolli1 [7]

The volume of the pyramid is 13 units³.

<h3>What is the volume of the pyramid?</h3>

A pyramid is a 3-dimensional shape that is made up of a rectangular base and 4 triangular faces. The volume of a pyramid is one-third that of a prism.

Volume of a pyramid = 1/3 x prism

1/3 x 39 = 13

To learn more about rectangle pyramid, please check: brainly.com/question/9222686

#SPJ1

7 0

2 years ago

Part A. Write an equation of a line that is perpendicular to the line y = 2/3x + 5 and passes through the point (4, 0).

fenix001 [56]

Answer:

$y = -\frac{3}{2}x+6$

Step-by-step explanation:

Given:

The given equation of the line $y = \frac{2}{3} x + 5$ that passes through the point (4, 0).

Part A.

The equation of the line.

$y=mx+c$ -----------(1)

Where:

m = Slope of the line

c = y-intercept

The given equation of the line.

$y = \frac{2}{3} x + 5$

Comparing the given equation with equation 1.

The slope of the line is $m=\frac{2}{3}$ and y-intercept $c = 5$

We know that the slope of the perpendicular line is $(-\frac{1}{m})$ .

So the slope of the perpendicular line is $(m=-\frac{1}{\frac{2}{3}}=-\frac{3}{2})$ .

Using point slope formula we write the equation of the perpendicular line that passes through the point (4, 0).

$y-y_{1} = m(x-x_{1}$

Now we substitute the slope of the perpendicular line $m=-\frac{3}{2}$ and $y_{1} = 0, x_{1}=4$ from point (4, 0) in above equation.

$y-0 = -\frac{3}{2}(x-4)$

$y = -\frac{3}{2}x-(-\frac{3}{2}\times 4)$

$y = -\frac{3}{2}x-(-3\times 2)$

$y = -\frac{3}{2}x-(-6)$

$y = -\frac{3}{2}x+6$

Therefore the perpendicular line equation is $y = -\frac{3}{2}x+6$ .

Part B.

1. The slope of the perpendicular line is $m=-\frac{3}{2}$ .

2. The y-intercept of the perpendicular line is 6.

3. The equation of the line $y = -\frac{3}{2}x+6$ is perpendicular to the equation of line $y = \frac{2}{3} x + 5$ .

6 0

3 years ago