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3 years ago

Someone pleaseee help meeee

Mathematics

2 answers:

horrorfan [7]3 years ago

8 0

Ill tell you the answer if u mark me brainliest

Nikitich [7]3 years ago

5 0

Answer:

A. 9

Step-by-step explanation:

y2 - y = m(x2 - x) formula

7 - -2/ -6 - -7 = m

9/1 = m

9 = m

The equation would have a slope of 9.

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Adele is 5 years older than Timothy. In three years, Timothy will be of Adele’s age. What is Adele’s current age?

Ede4ka [16]

Adele is going to be 12 years old

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3 years ago

A small jet can carry up to 44 passengers and 3 crew members. There is a weight restriction of 9200 pounds on board. The combine

Agata [3.3K]

Answer:

2.89 percent chance

Step-by-step explanation:

so first if you divide 9200 and 47 you get a total of 195.74 .now if you combine the weight of each passenger and crew memeber and their luggage it has a mean of 200.4 pounds with a standard deviation of 69.3 pounds so their is a 2.89 percent chance im sure if not shoe me the nswers and i will give you th correct answer

7 0

4 years ago

Evaluate this expression.<br> y + 7, if y = 12

photoshop1234 [79]

Answer:

$\huge{ \boxed{ \sf{19}}}$

Step-by-step explanation:

$\underline{ \sf{Given}} : \sf{y = 12}$

$\underline{ \sf{To \: Find}} : \sf{Value \: of \: the \: given \: expression}$

$\sf{y + 7}$

plug the value of y

$\mapsto{ \sf{12 + 7}}$

Add the numbers: 12 and 7

$\mapsto{ \sf{19}}$

Hope I helped!

Best regards! :D

~ $\text{TheAnimeGirl}$

6 0

3 years ago

Read 2 more answers

Howie sorkin can travel 8 miles upstream in the same time it takes him to go 12 miles downstream. His boat goes 15 mph in still

lozanna [386]

Answer: the speed of the current is 2.5 mph

Step-by-step explanation:

Let the speed of the boat be x miles per hour

Let the speed of the current be y miles per hour

Speed = distance / time

Time = distance/speed

If the boat goes 12miles downstream(in still water) at 15 mph then, the time is

12/ 15 = 0.8 hours

In still water, it means that it moved in the same direction with the current.

The total speed would be x + y. Therefore

x + y = 15 - - - - - - -1

If the boat goes 8 miles upstream in 0.8 hours, the the speed is

8/ 0.8 = 10 miles per hour

Assuming it moved in the opposite direction to the current.

The total speed would be x -y. Therefore

x - y = 10 - - - - - - -2

Adding equation 1 and equation 2, it becomes

2x = 25

x = 25/2 = 12.5

y = 15 - x

y = 15 - 12.5 = 2.5 miles per hour

8 0

3 years ago

at 1:30 in the afternoon an old freight train and a new dart express train pull out of the new garland station going in opposite

nydimaria [60]

Solution: The speed of old freight train is 0.5 miles per minute and the speed of new dart express train is 1.5 miles per minute.

Explanation:

Let the speed of old freight train is x miles per minute and the speed of new dart express train is y miles per minute.

It is given that the speed of the dart express train is three times faster than the freight train. So, it can be written as,

$3x=y$ ....(1)

The trains are moving towards the opposite directions, therefore the distance between them is increased at the speed of $(x+y)$ miles per minute.

$Distance=Speed\times Time$

The distance between both train in 15 minutes is represented by $15(x+y)$ .

According to the given information the distance between trains is 30 miles in 15 minutes.

$15(x+y)=30$

$x+y=2$

Use equation (1) and put $y=3x$

$x+3x=2$

$4x=2$

$x=0.5$

Put this value in equation (1), to find the value of y.

$y=3(0.5)$

$y=1.5$

Therefore, the The speed of old freight train is 0.5 miles per minute and the speed of new dart express train is 1.5 miles per minute.

4 0

3 years ago