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devlian [24]
3 years ago
10

7a − 5 = −215!!!!!!!!!!!!!!!!!111!!!!!!1!!11

Mathematics
1 answer:
andrey2020 [161]3 years ago
8 0

Answer:

a = 30

Step-by-step explanation:

If you have any questions about the way I solved it, don't hesitate to ask me in the comments below ;)

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Which lines are perpendicular to the line y - 1= 1(x+2)? Check all that apply
Vesnalui [34]

Step-by-step explanation:

Given the line y-1 = 1(x+2), in order to know the line that is perpendicular to the given line, we will first find the slope of the known line.

The standard form of equation of a line is expressed as y = mx+c

m is the slope

c is the intercept

Rewrite the equation given

y-1 = 1(x+2)

y-1 = x+2

y = x+2+1

y = x+3

Comparing to the standard form, the slope m = 1.

For two lines to be perpendicular, the product of their slope must be -1 i.e mM = -1

Substitute

1(M) = -1

M = -1

For us to know the line that is perpendicular to the given line, its slope must be -1.

<em>Since none of the equation has a slope of -1, hence none of the lines are perpendicular to the line y - 1= 1(x+2).</em>

<em></em>

6 0
3 years ago
Katie's deli can make 60 sandwiches in 4 hours. Stacy's can make double that in the same amount of time. How many sandwiches can
VikaD [51]

Answer:

Step-by-step explanation:

4 0
3 years ago
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BY taking the square root you can find each of them as follows:

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3 years ago
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Number 1 is x=8!! 


2 is pretty confusing so I hope someone else can answer two as I have answered 1!
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3 years ago
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Point C is located at (1, 2) and point D is located at (−4, −2). Find the y value of the point that is 1 over 4 the distance fro
fomenos
If we use similar triangles ( as shown in the attachment ) we will see that the line CM is also  1/4 *( yC-yD)= 1/4*(2+2) = 1/4*4 =1
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4 0
3 years ago
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