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3 years ago

WILL GIVE BRAINLIEST

Mathematics

1 answer:

Nana76 [90]3 years ago

8 0

I too also need this answer.

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kadeem and quinn both drive 25 miles. Kadeem drives at a constant speed of 50 miles an hour. Quinn drives at a constant speed of

Phantasy [73]

Answer:

Kadeem will take 0.166 h more to complete the course.

Step-by-step explanation:

The speed is the rate at which the distance changes, when the speed goes up the distance changes more quickly, therefore if the distance is the same and the speed is higher the one who will take longer is the one that has less speed. In this case the one who will take longer to drive the 25 miles is Kadeem, since he's driving at 50 mph. In order to calculate how much longer we need to calculate the time at which each of them complete the course, this is shown below:

time = distance/speed

For Kadeem:

time = 25/50 = 0.5 h

For Quinn:

time = 25/75 = 0.334 h

The difference between the is 0.5 - 0.334 = 0.166 h.

8 0

3 years ago

The side length of a square is 9 units. The square is reflected over the x-axis in the coordinate plane. What is the length of t

Ilia_Sergeevich [38]

Answer:

9 units

Step-by-step explanation:

Reflections do not change the size of a shape, only dilations do. The side length will stay 9 units.

4 0

2 years ago

PLEASE HELP!!! 15 PTS!!

kherson [118]

Answer:

$\large\boxed{C.\ (2,\ -45^o)}$

Step-by-step explanation:

Regular coordinates (x, y)

Polar coordinates (r, φ)

$r=\sqrt{x^2+y^2}\\\\\psi=\arctan\frac{y}{x}$

We have the point

$(\sqrt2,\ -\sqrt2)$

Substitute:

$r=\sqrt{(\sqrt2)^2+(-\sqrt2)^2}=\sqrt{2+2}=\sqrt4=2\\\\\psi=\arctan\left(\frac{-\sqrt2}{\sqrt2}\right)=\arctan(-1)=-45^o$

6 0

3 years ago

How much time is needed for a 15,000 W engine to do 1,800,000 J of work? (Power: P = W/t) 0.008 s 8 s 120 s 1,785,000 s

Thepotemich [5.8K]

By definition, the power is given by:
$P = \frac{W}{t}$
By definition, the power is given by:
Where,
W: Work done
t: time
Clearing the time we have:
$t = \frac{W}{P}$
Substituting values we have:
$t = \frac{1800000}{15000}$
Making the corresponding calculations we have:
$t = 120s$
Answer:
is needed for a 15,000 W engine to do 1,800,000 J of work about:
$t = 120s$

7 0

3 years ago

Read 2 more answers

Do A triangle with sides measuring 12, 16, and 20 is a right triangle?

Julli [10]

Yes, because :
${16}^{2} + {12}^{2} \\ = \sqrt{400} \\ = 20$

4 0

3 years ago