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2 years ago

Someone help me I need help on this test

Mathematics

1 answer:

VladimirAG [237]2 years ago

3 0

Answer: the answer is B

Step-by-step explanation:

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Can you tell me what -15 + 4 equals and the process of how you got that answer

Bogdan [553]

-15 is 15 below o

you are adding 4 , so you are getting closer to 0

so you would actually use subtraction, 15-4 = 11

since 15 is negative, and you are adding a number smaller than 15, the answer would be negative so it would be -11

4 0

3 years ago

Write an equation in slope-intercept form that goes through (12, 4) and (20,8).

spayn [35]

Answer:

Equation in slope-intercept form that goes through (12, 4) and (20,8) is: $y = \frac{1}{2}x-2$

Step-by-step explanation:

Given two points are:

$(x_1,y_1) = (12,4)\\(x_2,y_2) = (20,8)$

Slope intercept form of line is given as:

$y = mx+b$

Here m is the slope of the line and b is the y-intercept.

Slope of a line is calculated by the formula:

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

Putting the values

$m = \frac{8-4}{20-12}\\m = \frac{4}{8}\\m=\frac{1}{2}$

Putting the value of slope in slope-intercept form we get

$y = \frac{1}{2}x+b$

To find the value of b, any one point will be put in the equation

Putting the first point (12,4) in the equation

$4 = \frac{1}{2}(12) + b\\4 = 6+b\\b = 4-6\\b = -2$

Putting the value of b

$y = \frac{1}{2}x-2$

Hence,

Equation in slope-intercept form that goes through (12, 4) and (20,8) is: $y = \frac{1}{2}x-2$

4 0

2 years ago

The room is 12 feet by 8 feet. what is the side measure of the largest square tile that you can use to cover the whole floor so

barxatty [35]

The measurement of the largest square tile is 4 ft. by 4 ft.
You would need 6 of these tiles to fill the room.

8 0

3 years ago

Can someone explain how im meant to do this please? :)

valina [46]

Answer:

you have to do

92×98=9016

then 9016=10(here we roud to 1 signification figure)

49×138=6762

6762=6

216×876=189216

189216=1

i think it’s the answers

7 0

3 years ago

(40/5)-7+2? I know the answer but I don’t know how I got to it

ExtremeBDS [4]

Answer:

Step-by-step explanation:

(40/5)-7+2

PEMDAS says parentheses first, so divide inside the parentheses

(8)-7+2

Then add and subtract from left to right

1 +2

8 0

2 years ago

Read 2 more answers