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3 years ago

Find the slope of the line that passes through each pair of points.

2 answers:

6 0

Ok
so here you use the slope and point slope form.
slope form is: m=(y₂-y₁)/(x₂-x₁)
point-slope form is: (y-y₁)=m(x-x₁)
so i will do one and try doing the rest!!
1. so first find the slope.
points are: (3,1) & (6,3)
so m=(3-1)/(6-3)
m=2/3
that is your slope then use the point-slope form.
you can use any one point from the two. lets use (3,1)
so (y-1)=2/3(x-3)
y-1=2/3x-2
so solve it till you have only a y on one side.
y=2/3x-1
tell me if you need help with the rest. can't do it all since you need to know how to do it.
i will give you the answers later to check
hope it helped!!!!

Julli [10]3 years ago

5 0

1. 2/3
2. 6/5
3. -1
4. -9/4

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The three angles of a triangle are in the ratio 5:4:1. Find all the angles of the triangle.

solniwko [45]

Answer:

Step-by-step explanation:

let the first angle be 5x

second be 4x

and third be 1x

as we know that by adding all the sides of triangle we get 180°

therefore ,

5x+4x+1x=180°

10x=180°

hence ,

x=18°

first angle - 18*5 = 90°

second angle - 18*4=72°

third angle - 18°

HOPE THIS HELPS YOU !!!

6 0

3 years ago

Read 2 more answers

Determine the slope of the line shown.

marin [14]

Pick 2 points off ur line...it is easier if u pick whole number points

(2,0) and (0,5)
slope formula = (y2 - y1) / (x2 - x1)
now label ur points
(2,0)...x1 = 2 and y1 = 0
(0,5)...x2 = 0 and y2 = 5
now sub and find the slope
slope(m) = (5 - 0) / (0 - 2) = -5/2 <====

7 0

3 years ago

20x^2/12x+8 simplified

shepuryov [24]

20/12 4
52/3
52+/3.+8

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8 0

3 years ago

20) Laila borrowed $9000 from a bank that

iris [78.8K]

Answer:

the answer i think is $259200

Step-by-step explanation:

if the bank charges 7.2% every year, and in this case it's 4 years, then that would mean it would be 28.8%(7.2 x 4), which means the answer would be 9000 x 28.8 which is 259200.

Hope it helped

3 0

3 years ago

Genius question: A long level railway bridge passes over a railroad track, which is 100 feet below it and at right angles to it.

nataly862011 [7]

Answer: <u>110 feet per second</u>

Step-by-step explanation:

In this problem we will assume that the car at 45 miles per hour is moving into the x direction with a high of 100 feet, and the train is going in the y direction, so they trajectories will made an angle of 90º.

Now we can calculate the speed of the trains in feet per second so:

$S1=\frac{45*5280}{3600}=66$

$S2=\frac{60*5280}{3600}=88$

So we can make a right triangle with sides 66 and 88 and the hypotenuse will be the rate that the trains will separate per second so:

$h=\sqrt{66^{2} +88^{2} } =\sqrt{4356+7744}$

$h=\sqrt{12100}=110$

Is important to have in mind that the initial high is not going to change how fast the trains will separate, however, if we are going to calculate the distance we should have it in the calculations.

7 0

2 years ago