All categories

3 years ago

HELP MATH ASAP!! MARKING BRAINLIST-!

Mathematics

2 answers:

vovangra [49]3 years ago

5 0

Answer:

-55

Step-by-step explanation:

Leona [35]3 years ago

4 0

Answer:

It's -55, you just plug in the coordinates and the slope and solve till you get the y intercept on one side.

You might be interested in

I am new to this whole thing well website and i'm doing six grade math.

Tema [17]

Two times four
Eight divide in half
Eight

Six times four
Twenty four

Eight plus twenty four

Thirty two

When you have a triangle just multiply the sides then divide that total by half that will be the area for that

8 0

3 years ago

What’s the equation for a line passing through points (-1, 4.5) and (6, 8)?

san4es73 [151]

Answer:

Given points ( -1 , 4.5 ) and ( 6 , 8 )

Step-by-step explanation:

first we should calculate slope 

Slope ( m) 

= ( y2 - y1) / ( x2 - x1) 

= ( 8 - 4.5 ) / ( 6 + 1 )

= 3.5/7

= 0.5

Now the equation of line is given by 

y - y1 = m ( x - x1 )

y - 4.5 = 0.5 ( x + 1 )

( y - 4.5 ) = 0.5 ( x + 1)

y - 4.5 = 0.5x + 0.5

y = 0.5x + 0.5 + 4.5

y = 0.5x + 5

3 0

3 years ago

Helppppppppp!!!!!!!!!!!!!!!!!!!!!!!

tatuchka [14]

Answer:

a= -24 i hope this helped

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Wyoming is an approximately square-shaped state. The area of Wyoming is 97,818 square miles. To the nearest mile, how long is on

BartSMP [9]

The formula for area of a square is Area = side^2.

You are given the area, so now you have 97,818 = Side^2.

To find Side, take the square root of both sides:

Side = √97818

Side = 312.76 miles.

Rounded to the nearest mile is 313 miles.

5 0

3 years ago

A certain railway company claims that its trains run late 5 minutes on the average. The actual times (minutes) that 10 randomly

iragen [17]

Answer:

Option C) We would reject the claim that the trains run late an average of 5 minutes and conclude that they run late an average of more than 5 minutes since the 99% confidence interval exceeds 5.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 5 minutes

Sample mean, $\bar{x}$ = 9.130 minutes

Sample size, n = 10

Alpha, α = 0.01

Sample standard deviation, s = 1.4 minutes

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 5\text{ minutes}\\H_A: \mu \neq 5\text{ minutes}$

We have to construct 99% confidence interval.

99% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 9 and}~\alpha_{0.01} = \pm 3.249$

$9.130 \pm 3.249(\dfrac{1.4}{\sqrt{10}} ) = 9.130 \pm 1.4383 = (7.6917,10.5683)$

99% Confidence interval: (7.6917,10.5683)

Since the population mean does not lie in he calculated confidence interval, thus, we fail to accept the null hypothesis and accept the alternate hypothesis.

Option C) We would reject the claim that the trains run late an average of 5 minutes and conclude that they run late an average of more than 5 minutes since the 99% confidence interval exceeds 5.

6 0

3 years ago