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Ymorist [56]
3 years ago
10

X-4=2(x+1) what’s X?

Mathematics
2 answers:
Sedbober [7]3 years ago
8 0

Answer:

x=-5

Step-by-step explanation:

Lets take 2(x+1) first

carry on the 2 to the parenthesis

2 . x & 2 x 1

=2x+1

next we put it back in the equation

x-4=2x+1

cancel out the common terms

for example when you bring the +1 to the other side it will become -1

now we will do -4(-1)

=-5

rewrite the equation:

x-5=2x

do the same with the x! :)

equation:2x-x

=x (or 1x)

so -5=x

thats your answer!

x=-5

-Sumin <3

Diano4ka-milaya [45]3 years ago
7 0

Answer:

X= -6

Step-by-step explanation:

x-4=2x+2

x-2x=2+4

X = -6

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Answer:

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44. it's the same here, if the area is 81. then each side of the square is 9

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3 0
2 years ago
What is a real situation that would be represented by <br> a+3
spin [16.1K]
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7 0
3 years ago
A line had a slope of 2/3 and a y intercept at (0,14).What is the x intercept of the line?​
pychu [463]

Answer:

y=2/3x+14

Step-by-step explanation:

The standard form of an equation in slope-intercept form is y=mx+b where m=slope and b=y-intercept.

Given a y-intercept of 14 and a slope of 2/3, we can plug into the variables and get the equation y=2/3x+14

The x-intercept would be when y=0, so plugging in y=0 to the equation gets us:

0=2/3x+14

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21=x

So the x-intercept is 21

6 0
3 years ago
write the equation of the line with x-intercept of -4 and y-intercept of 2. Hint:with those intercepts, (-4,0) and (0,2) are poi
Ber [7]
X/(-4)+y/2=0
-x/4+y/2=0
3 0
3 years ago
PLEASE HELP!
Wittaler [7]

Answer:

See below

Step-by-step explanation:

Use the formulae directly

For a cone, with base radius = r and height = h, here are the related formula

\textrm{Slant height  l} = \sqrt{r^2 + h^2}  (1)

\textrm{Lateral surface area} = \pi r l

\textrm {Base area} = \pi r^2

\textrm { Total Surface Area SA} = \textrm{Base Area + Lateral Area} = \pi r^2 + \pi rl = \pi r(r + l) (2)

\textrm{Volume V = } (1/3)  \pi r^2h (3)

Therefore directly plugging in the numbers in the above equations:

Note:

l = slant height in cm
SA = total surface area in sqcm
V = Volume in cubic cm

Figure(a)

r = 4, h = 8

\textrm{l} = \sqrt{4^2 + 8^2} =\sqrt{80} = 8.944 \\\textrm{SA}  = 4\pi(4 + 8.944) =  4\pi(12.944) = 162.66\\\textrm{V} = (1/3)\pi(4^2)(8) = 134.04

Figure(b)

r = 7, h =15

\textrm{l} = \sqrt{7^2 + 15^2} =\sqrt{274} = 16.55

\textrm{SA}  = 7\pi(7 + 16.55) =  517.89

Figure (c)

r = 5, l = 8

h = \sqrt{l^2 - r^2} = \sqrt{8^2 - 5^2} = \sqrt{39} = 6.245\\SA = \textrm{SA}  = 5\pi(5 + 8) =  204.2\\V = (1/3)\pi(5^2)(6.245) = 163.5


6 0
2 years ago
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