All categories

3 years ago

How do i calculate the slope of the line between (-2, -4) and (-10, 5)

Mathematics

2 answers:

Goryan [66]3 years ago

8 0

Look at the image. I need 20 characters lol

luda_lava [24]3 years ago

6 0

Answer:

-9/8

Step-by-step explanation:

To solve this you do the change in y over the change in x. so in this case it would be (-4)-(5)/(-2)-(-10). Which is -9/8 which is the slope.

You might be interested in

Unit Test

Elza [17]

Answer:

Its is C.i and iii only

Step-by-step explanation:

: )

6 0

4 years ago

Read 2 more answers

Karina is creating two pyramids with the nets below using construction paper. In both nets, all of the triangular faces of the p

sleet_krkn [62]

Answer:

144 sq in

Step-by-step explanation:

Face height=9, bases=6 in

#Assume the pyramid has a square base.

First we need to calculate the perpendicular height of the pyramid:

$#Pythagorean \ Theorem\\a^2+b^2=c^2\\9^2-(0.5\times 6)^2=h^2\\72=h^2\\h=\sqrt{72} \ in$

Now to find the surface area of each pyramid:

$A=lw+l\sqrt{(w/2)^2+h^2}+w\sqrt{(l/w)^2+h^2}\\\\\#w=l=6,h=\sqrt{72}\\\\A=6^2+6\sqrt{(6/2)^2+72}+6\sqrt{(6/6)^2+72}\\\\A\approx 144\ sq \ in$

Hence amount of construction paper needed to make each pyramid is 144 sq in

3 0

3 years ago

A furnace repair person charges an initial fee of $80 plus $30 per hour to do repairs.

Svetlanka [38]

Answer:

A) The repair bill would be at least $320 after 8 hours

B) The repairman would have worked for 5 hours

Step-by-step explanation:

A) Set up your equation with x equaling hours

30x + 80 = 320

subtract 80 to the opposite side of the equation

30x = 240

divide by 30

30x/30 = 240/30

x = 8

B) Set up your equation with x equaling hours

30x + 80 = 230

subtract 80 to the opposite side of the equation

30x = 150

divide by 30

30x/30 = 150/30

x = 5

7 0

3 years ago

A freight train travels at 30 mph. If the freight train is 300 miles ahead of an express train traveling at 55 mph, how long wil

choli [55]

Answer:

x+300

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

A television can be bought on hire purchase with a deposit of $800 and 20 monthly installments of $275. What is the hire purchas

Svetach [21]

Answer:

The hire purchase price is $6300

6 0

3 years ago

Read 2 more answers