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allochka39001 [22]
3 years ago
7

Write the equation of the line that passes through the point (-4, -9) and has a slope of 1/2​

Mathematics
2 answers:
zepelin [54]3 years ago
4 0

Answer:

The answer is y=1/2x-7

Step-by-step explanation:

y-y=m(x-x¹)

y-(-9)=1/2(x-(-4)

y+9=1/2x+2

-9 -9

y=1/2x-7

Cerrena [4.2K]3 years ago
3 0
Y = 1/2x + b
Plug in the point :)
-9 = 1/2(-4) + b
-9 = -2 + b
b = -7
Y = 1/2 -7
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5 units left and 1 unit up
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Write 1.4 over 7 in simplest form
Nana76 [90]
2/10 because 0.7/7 is equal to one tenth, so 1.4/7 is equal to 2/10
7 0
3 years ago
5+3×=6+2×what's this ​
Nutka1998 [239]

First combine like terms ( x's go with x's), so subtract 2x to both sides and you get:

5+ (3x-2x) = 6 + (2x-2x)

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Isolate x by bringing 5 to the other side by subtraction

(5-5) + x = (6-5)

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Hope this helped!

8 0
3 years ago
Find the value of n, correct to 4 significant figures.​
Law Incorporation [45]

Answer:

6.708

Step-by-step explanation:

  • Y varies directly as the square of x (Given)

  • \implies y\:\alpha \:x^2......(1)

  • Y varies inversely as the square root of z (Given)
  • \implies y\:\alpha\: \frac{1}{\sqrt z}......(2)

  • Combining (1) & (2), we find:

  • y\:\alpha \:\frac{x^2}{\sqrt z}

  • \implies y=\frac{kx^2}{\sqrt z} (Where k is constant of proportionality).....(3)

  • Now, when y = 2, x = 3 and z = 4, we find the value of k i.e. constant.

  • 2=\frac{k(3)^2}{\sqrt 4}

  • \implies 2=\frac{k(9)}{2}

  • \implies k =\frac{4}{9}

  • Plugging the value of k in (3), we find:

  • y=\frac{4x^2}{9\sqrt z} ....(4)

  • Next, in equation (4), plug y = 5, x = n and z = 16 and obtain the value of n by solving it.

  • 5=\frac{4(n)^2}{9\sqrt {16}}

  • \implies 5=\frac{4(n)^2}{9(4)}

  • \implies 5=\frac{(n)^2}{9}

  • \implies 5(9)=(n)^2

  • \implies 45=(n)^2

  • \implies n=\sqrt{45}

  • \implies n=6.70820393

  • \implies n\approx 6.708
7 0
2 years ago
I totally need helppppppppp. Oh no im gonna faillllllll.
brilliants [131]

Answer:

19 will be the answer.

Step-by-step explanation:

10+9=19

8 0
3 years ago
Read 2 more answers
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