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MrRissso [65]
3 years ago
8

Please help me I don’t understand I will mark as brainliest!!! Stay safe :)

Mathematics
1 answer:
svetlana [45]3 years ago
6 0

Answer:

A) \frac{n+54}{9} =21

n+54=21*9

n+54=189

n=189-54

B) n=135

C) Equation and Solution:

n+28=156\\n=156-28\\n=128

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-4/5t+2/5=2/3<br> what is the value of t?
zvonat [6]

Answer:

answer would be -2/5

Step-by-step explanation:

i think thats what you mean i hope this helps

7 0
3 years ago
Read 2 more answers
Write an equation for a line parallel to y=-2x-1 that passes through (2,-7)
vovikov84 [41]

Answer:

The equation is;

y = -2x - 3

Step-by-step explanation:

If two lines are parallel, then they have an equal value of slope

Mathematically we can generally have the equation of a line written as;

y = mx + c

where m

is slope and c is the y-intercept

In the case of the equation given, the slope of the line is -2

So technically, we want to get the equation of a line that has a slope of -2 and it passes through (2,-7)

The point-slope form can be written as;

y-y1 = m(x-x1)

So the equation we want to get is;

y-(-7) = -2(x-2)

y + 7 = -2x + 4

y = -2x + 4 - 7

y = -2x - 3

5 0
2 years ago
In the relation C = 60+15n, C represents the total cost of holding an event at a hall, and n represents the number of guests. Th
telo118 [61]
Minimum possible number of guests is zero.

C = 60 + 15(0) = $60

Maximum possible number of guests is 100.

C = 60 + 15(100) = $1,560

That looks like Choice (d).
7 0
3 years ago
Does anyone know how to do this need help ASAP!!!
vivado [14]

Answer:

18

Step-by-step explanation:

unknown numbers?

6 0
3 years ago
NEED HELP FAST<br><br> y=−1/3x+1
fgiga [73]

\\ \sf\longmapsto y=\dfrac{-1}{3}x+1

Here let's compare with slope intercept form

\\ \sf\longmapsto y=mx+b

We get

  • Slope=m=-1/3
  • y-intercept=b=1
4 0
2 years ago
Read 2 more answers
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