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3 years ago

Slope of (21, 45) and (84, 87)

Mathematics

1 answer:

Marina86 [1]3 years ago

5 0

Answer:

2/3 (2over3)

Step-by-step explanation:

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The manager of a grocery store selected 100 customers at random to ask what the maximum price is

Brilliant_brown [7]

What is the rest of the question?

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3 years ago

Each day, the human heart pumps about 7500 liters of blood. As a simple approximation, assume that the work done by the heart is

erik [133]

Answer with Step-by-step explanation:

We are given

Volume of blood=V=7500 L= $7500\times 0.001=7.5 m^3$

1 liter= $0.001 m^3$

Height of person=h=1.5 m

Density of blood, $\rho=1050 kg/m^3$

We have to find the work done and power of person's heart.

We know that

Work done, $W=mgh=\rho Vgh$

Where $g=9.8 m/s^2$

Using the formula

$W=1050\times 7.5\times 9.8\times 1.5=1.16\times 10^5 J$

Time,t=1 day= $24\times 60\times 60=86400 s$

Power, P= $\frac{W}{t}$

Using the formula

$P=\frac{1.16\times 10^5}{86400}=1.34 Watt$

7 0

3 years ago

Four points from a line are shown in the table below.

Dvinal [7]

Answer:

Correct choice is D. $y=-x+3$ .

Step-by-step explanation:

pick any two points from the table say (0,3) and (1,2)

Now we we can use both points to find the equation of line.

slope $m=\frac{y_2-y_1}{x_2-x_1}=\frac{2-3}{1-0}=\frac{-1}{1}=-1$

now plug slope m=-1 and any point say (0,3) into point slope formula

$y-y_1=m\left(x-x_1\right)$

$y-3=-1\left(x-0\right)$

$y-3=-1\left(x\right)$

$y-3=-x$

$y=-x+3$

Hence correct choice is D. $y=-x+3$ .

8 0

3 years ago

Please help thank you!!!!!!

zvonat [6]

H : because each square contains 100 blocks so the two boxes would be 200 together and as you see one square has all blocks shaded ( 100% ) and then has another 100 block with only 40% shaded in 100% + 40% = 140%

6 0

3 years ago

Using the following triangle, what is the cosine of angle a?

tia_tia [17]

Answer:

C: CosA = $\frac{b}{c}$

Step-by-step explanation:

4 0

3 years ago