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4 years ago

Plz help me with these 2 questions and if you can explain how you got the answer.

Mathematics

1 answer:

Oksi-84 [34.3K]4 years ago

8 0

I think the answer for number 4 is a

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Pleaseee I need help on this one too

erastova [34]

I can't exactly see if the 10 at the end is negative, but I'm going to assume that it is.
10x - 6y = 8
5x - 10y = -10
= (2, 2)
} I hope this helped! {

5 0

3 years ago

Hey snowmobile priced at $2800 it’s on sale for 20% off. The sales tax rate is 8.25%. What is the sales price including tax?

BabaBlast [244]

Answer:

20% off of $2800 = $2240

8.25% of $2240 = $184.80

$2240 + $184.80 = $2424.80

Step-by-step explanation:

6 0

3 years ago

What number represents 50 meters below sea level

cluponka [151]

-50 meters would be the answer.

3 0

3 years ago

What is the slope of the equation: d = 425t?

shusha [124]

Answer:

425

Step-by-step explanation:

hope this helps. pls give brainliest.

3 0

3 years ago

For 11 and 12, find... a.) The slope of the line parallel to the line that passes through the given points, and b.) The slope of

Minchanka [31]

(11)

we are given two points

(x1,y1)=(0,3)

(x2,y2)=(8,7)

so, we get

$x_1=0,y_1=3$

$x_2=8,y_2=7$

(a)

we know that slope of parallel lines are always equal

so, we can use formula

$m=\frac{y_2-y_1}{x_2-x_1}$

now, we can plug values

$m=\frac{7-3}{8-0}$

$m=\frac{4}{8}$

$m=\frac{1}{2}$ ............Answer

(b)

we know that slope of perpendicular line is -1/m

so,

$slope=\frac{-1}{m}$

now, we can plug value

$slope=\frac{-1}{\frac{1}{2}}$

$slope=-2$ ...............Answer

(12)

we are given two points

(x1,y1)=(5,-1)

(x2,y2)=(3,1)

so, we get

$x_1=5,y_1=-1$

$x_2=3,y_2=1$

(a)

we know that slope of parallel lines are always equal

so, we can use formula

$m=\frac{y_2-y_1}{x_2-x_1}$

now, we can plug values

$m=\frac{1+1}{3-5}$

$m=\frac{2}{-2}$

$m=-1$ ............Answer

(b)

we know that slope of perpendicular line is -1/m

so,

$slope=\frac{-1}{m}$

now, we can plug value

$slope=\frac{-1}{-1}$

$slope=1$ ...............Answer

7 0

3 years ago