Ask question

Ask question

All categories

3 years ago

12

A scientist invents a car that can travel for many hours without stopping for fuel. The car travels around a track at 46 miles a

n hour for 24 hours. At the end of the 24 hours, how far has the car traveled

1 answer:

melomori [17]3 years ago

6 0

Assuming the car is going at a constant speed, it will travel 1104 miles.

46*24=1104

You might be interested in

Plz help me my teacher has been gone on military leave and I'm totally lost

Degger [83]

Hey!

Hope this helps...

~~~~~~~~~~~~~~~~~~~~~~~

The Domain: F

The Range: A

X-intercept: C

Y-intercept: D

the functional value: G

Increasing: B

Decreasing: E

Constant: H

6 0

3 years ago

What are the lengths of the legs of triangle ABC?

lys-0071 [83]

Answer:

B)6v3; 12

The answer to the question is b.

7 0

3 years ago

The life in hours of a 75-watt light bulb is known to be normally distributed with standard deviation σ = 25 hours. A random sam

irina [24]

Answer: a) (1008.34,1019.658) b) (1009.24,1018.76)

Step-by-step explanation:

Since we have given that

n = 75

mean = 1014 hours

Standard deviation = 25 hours

At 95% two sided , z = 1.96

So, confidence interval would be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.96\dfrac{25}{\sqrt{75}}\\\\=1014\pm 5.658\\\\=(1014-5.658,1014+5.658)\\\\=(1008.34,1019.658)$

(b) Construct a 95% lower confidence bound on the mean life.

z = 1.65

So, confidence interval would be

$\bar{x}\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.65\times \dfrac{25}{\sqrt{75}}\\\\=1014\pm 4.76\\\\=(1014-4.76,1014+4.76)\\\\=(1009.24,1018.76)$

Hence, a) (1008.34,1019.658) b) (1009.24,1018.76)

4 0

3 years ago

Adonis created a rectangular play area for his dog in his backyard. The length of the long side was 10ft and the length of the s

Drupady [299]

Answer:

The perimeter of the dog's play area is 30 ft

Step-by-step explanation:

Rectangle:

The opposite sides are congruent.
The opposite angles are congruent.
The sum of all four angles of a rectangle is 360°.
The sum of two adjacent angles of a rectangle is 180°.
The diagonals bisect each other.
The perimeter of a rectangle is = 2(Length+width)
The area of a rectangle is = Length × width

Given that,

The length of the long side of the dog's play area was = 10 ft.

So, Length of dog's play area is = 10 ft.

The length of the short side of the dog's play area was = 5 ft.

So, width of dog's play area is = 5 ft.

It is a rectangular plot.

So, the perimeter of the dog's play area is =2(Length+width)

=2(10+5) ft

=2(15) ft

=30 ft

5 0

3 years ago

If 2000 dollars is invested in a bank account at an interest rate of 6 percent per year, find the amount in the bank after 7 yea

AfilCa [17]

Answer:

$3007.26

Step-by-step explanation:

Step one:

given data

Principal= $2000

rate= 6%= 0.06

time= 7years

Required:

The final amount A

Step two:

the expression for the compound interest is

$A= P(1+r)^t$

substituting we have

$A= 2000(1+0.06)^7\\\\A= 2000(1.06)^7\\\\A=2000*1.50363\\\\A=3007.26$

6 0

3 years ago