As the Earth revolves around the sun, it travels at a speed of approximately 18

1 answer:

4 0

So if the earth goes 18 miles per second you would multiply 18 and 60 since 60 seconds are in a minute. And that is 1,080 miles in a minute then times that by 5 and your answer is 5,400 miles in 5 minutes.

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One number is nine more than another number. If the sum of the numbers is 65 find both numbers

velikii [3]

Answer:

THEY ARE 37 AND 28

Step-by-step explanation:

LET THE NUMBERS BE X AND Y

X = 9 + Y

X - Y = 9 ........1

X + Y = 65 .....2

ADDING 1 AND 2

2X = 74

DIVIDING BY 2

2X/2 = 74/2

X = 37

AND X = 9 + Y

: Y = X - 9

PUTTING X = 37

Y = 37 - 9

Y = 28

6 0

3 years ago

A girl is on a train that is headed East at 100 miles per hour. The girl is walking at 5 miles per hour

nata0808 [166]

Answer: The speed is 105 miles/ hr and the direction of the train would be East if the girl is the frame of reference.

Step-by-step explanation:

Since we have given that

Speed of train = 100 miles per hour

Speed of girl = 5 miles per hour

Since the girl is moving towards the back of train.

So,it means train and girl are moving in opposite direction.

So, Relative speed would be

$100+5=105\ miles/hr$

Hence, the speed is 105 miles/ hr and the direction of the train would be East if the girl is the frame of reference.

7 0

3 years ago

Lyra and Donna are testing the two-way radios they built for their high school science project. Lyra goes to the top of a buildi

nata0808 [166]

This question is far easier to understand if we draw it out. I've included an image attachment to help show the relationships of the measurements. As we can see from the image, their positioning helps form a triangle that we can use the Pythagorean Theorem to find the connection range.
The Theorem is $a^2 + b^2 = c^2$ where a and b are the legs and c is the hypotenuse.

$22^2 + 50^2 = c^2$
$484 + 2500 = c^2$
$2984= c^2$
$\sqrt{2984} = c$
$54.63 = c$
So the answer to the nearest meter is 55 meters.