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2 years ago

Can you guys help me when you have time

Mathematics

2 answers:

Evgesh-ka [11]2 years ago

7 0

Answer:

Step-by-step explanation:

hodyreva [135]2 years ago

4 0

Answer:

Step-by-step explanation:

the reasoning for this is because it is technically 2 squared times 3 but 2x2x3 is the same thing

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If a student has an average exam score between 70 and 79, he will earn a grade of C in his algebra course. Suppose he has three

goldenfox [79]

Answer:

(64,86.5)

Step-by-step explanation:

find the case where he gets 70 and the case where he gets 79

if his average is 70:

(75+62+85+2x)/5=70

(222+2x)/5=70

222+2x=350

2x=128

x=64

if his average is 79:

(75+62+85+2x)/5=79

(222+2x)/5=79

222+2x=395

2x=173

x=86.5

7 0

3 years ago

Explain why if a runner completes a 6.2â-mi race in 32 âmin, then he must have been running at exactly 11 âmi/hr at least twice

MA_775_DIABLO [31]

Answer:

Accelerating to top speed, deaccelerating to finish line.

Step-by-step explanation:

If the runner kept a constant speed of 11 mph for the whole duration of his run (32 minutes), the distance he would have covered is:

$d=11*\frac{32}{60}\\d= 5.87\ mi$

This means that, in order to run the full 6.2 miles, the runner needs to reach a speed over 11 mph. Assume he starts from rest, while accelerating the runner reaches, and the surpasses, the 11 mph mark. Since his speed at the finish line is zero, the runner has to deaccelerate from his current running speed (which should be higher than 11 mph), passing through 11 mph and reaching zero at the finish line.

3 0

3 years ago

Mrs. Gregory, the golf course superintendent at a country club, plans to reseed the putting green of the first hole. The circula

WITCHER [35]

Answer:

The area of the putting green is 1133.5 square feet.

Step-by-step explanation:

Area of a circle:

The area of a circle is given by:

$A = \pi r^2$

In which r is the radius, which is half the diameter.

The circular putting green has a diameter of 38 ft.

This means that $r = \frac{38}{2} = 19$

What is the area of the putting green?

$A = \pi r^2 = 3.14 * 19^2 = 1133.5$

The area of the putting green is 1133.5 square feet.

5 0

3 years ago

How to graph 3y=-x-3

saw5 [17]

So you’ll have to isolate the y by dividing the other side of the equation by 3

3y=-x-3
y=-1/3x-1

-1 will be your y intercept and the slope will be -1/3

you’ll start your line by plotting (0,-1)
then from that point you’ll count down one, right 3
or up one, left 3

hope this helps (:

3 0

3 years ago

Wich line represents-7x-13 > 8?

nlexa [21]

Answer: 3rd one

Step-by-step explanation:Because I’m not from 63rd nahh jkjk I don’t have to explain its hard to

Explain

6 0

3 years ago