MATHEMATICS MIDDLE SCHOOL

Find the slope and reduce.
P=(-5, 2) Q=(-3, 6)​

Answers

Answer 1
Answer:

Good evening,

Answer:

Slope = 2

Step-by-step explanation:

(6-2)÷((-3)-(-5))=2.

:)

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Explain why a change from 20 to 40 is a 100% increase, but a change from 40 to 20 is a 50% decrease.Increasing 20 to 40 is the same as increasing 20 by c. So, it is a 100% increase. Decreasing 40 to 20 is the same as decreasing 40 by one-half of c. So, it is a 50% decrease.I don't understand how to fill in the blanks.

A striped marlin can swim at a rate of 70 miles per hour. Is this a faster or slower rate than a sailfish, which takes 30 minutes to swim 40 miles? Show your work.

Answers

Let's do the work shall we....

this is going to be a ratio problem.


Striped Marlin:
70 miles/ One hour (Or 60 minutes)

Sailfish:
40 miles/ 30 minutes.

Since 30 minutes is only one half of 60 minutes, all we have to do is multiply the sailfish ratio by 2 in order to receive the correct mph.

(40miles/30 minutes) x2 = (80 miles/60 minutes(or one hour)).

Therefore, the sailfish is faster! 80 miles per hour is faster than the 70 mph marlin.
You convert the minutes to hours and the marlin is slower because 70 mph is less than 80 mph.My work is in the attachment.

I need help I’m really struggling

Answers

Answer:

Last choice. √14/√14

Step-by-step explanation:

Multiplying by the reciprocal of the denominator would "cancel" the denominator, but To rationalize the -√14, you have to multiply it by √14 and you need an equivalent of 1 to keep the terms equal. So the numerator and denominator have to be multiplied by the same thing.

Jordan saved 4/5 of the amount he needs to buy a $80 video game. If he earns $7.75 per hour by working at a pizza shop, how many hours does he need to work to save the rest of the money for the video game? round to the nearest hour

Answers

Amount of money saved by Jordon for the video game = (4/5) * 80
                                                                                        = 4 * 16 dollars
                                                                                         = 64 dollars
So
The amount of money that
Jordan needs to earn more for buying the video game = (80 - 64) dollars
                                                                                       = 16 dollars
Amount earned by Jordan per hour working at a pizza shop = $7.75
Let us assume the number of hours Jordan needs to work to save the rest of the money for the video game = x
Then
7.75x = 16
x = 16/7.75
   =  2.06 hours
So it can be said that Jordan has to work 3 hours to save the rest of the money for the video game. If Jordan works 2 hours then he will be short of the required amount. If Jordan works for 3 hours he will have some excess amount in his hand after saving for the video game.

Write words to match the expression. 24- ( 6+3)

Answers

Words to match the expression 24 - (6 + 3) is given as follows:

"the difference of 24 and the sum of 6 and 3"

Answer: Twenty-four minus the sum of six and three

Happy to help!

Johan buys three flats of flowers he plants 2/5 of the flowers and then divides the remaining flowers amongst five friends. What fraction of the flat of flowers does each of Johahn's friends get?

Answers

Answer:

Each friend will get (9)/(25) of the flat of flowers.

Step-by-step explanation:

Johan buys 3 flats of flowers.

He plants (2)/(5)th of the flowers, then the remaining flowers = 3 - (2)/(5)* 3

= (9)/(5)

Now he divides the remaining flowers among 5 friends.

So each friend gets the fraction of flowers = \frac{\text{Remaining flowers}}{\text{Number of friends}}

= ((9)/(5) )/(5)

= (9)/(25)

Therefore, each of Johan's friend will get (9)/(25) of the flat of flowers.
We have to calculate the remaining, or the supplanted flower fraction.
Remaining =1-2/5=(5-2)/5=3/5.

Now, we calculate the fraction of the flat of flowers get by each friend.

Fraction get by each friend=remaining/number of friends
Fraction get by each friend=(3/5)/5=3/25

Answer: 3/25 flat of flowers are got by each friend 

The volume of a pyramid with a square base is 99 mm3 and the height is 9.5 mm. What is the length of each side of the base?

Answers

volume of pyramid is
V=(1/3)LWH
since it is a square pyramid, L=W
V=(1/3)L^2H
H=9.5
V=99

99=(1/3)L^2(9.5)
times 3/1 both sides
297=L^2(9.5)
divide boh sides by 9.5
31.263157894736842105263157894737=L^2
square root both sides
5.5913466977765599922751590799034=L=W

the legnth of each side is 5.5913466977765599922751590799034mm
The formula for the volume of a square pyramid is V=Bh
Plug in the numbers you are given:   99=B(9.5)
Divide (9.5) from both sides: 99/9.5 = B
You get approximately 10.42105
B= s*s = s^2
So, 10.43=s^2
sqrt 10.43=s

S= approx. 3.22
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