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Zinaida [17]
3 years ago
8

Solve the equation no calculator 1/5 (x +2)= 1/4 (x + 6)

Mathematics
1 answer:
NeTakaya3 years ago
8 0

First, you need to get rid of the fraction by multiplying both sides by 20 and you would get:

4(x + 2) = 5(x + 6)

Now, you need to get rid of the parenthesis by distributing:

4x + 8 = 5x + 30

Subtract both sides by 5x:

-x + 8 = 30

Subtract both sides by 8:

-x = 22

Now, divide both sides by -1:

x = -22



P.S.: You don't really need a calculator to solve.

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soldier1979 [14.2K]
Plug in three for x. Then do the math and that will show the proof in the answer too.
5 0
3 years ago
F(x)=x2+5x-1 is shifted 3 units left the result is g(x) what is g(x)?
Len [333]
Replace the x in  x^2 + 5x - 1 by x+3:-

g(x) =
(x+3)^2 + 5(x+3) - 1

= x^2 + 6x + 9 + 5x + 15 - 1

= x^2 + 11x + 23

- thats  g(x)
6 0
3 years ago
Sun Lei bought a laptop computer for $1800.
vekshin1

Subtract to find the amount of tax paid:

1890 - 1800 = 90

Divide the amount of tax by the price of the computer:

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Multiply the decimal by 100:

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3 years ago
A rectangular piece of metal is 15 in longer than it is wide. Squares with sides 3 in long are cut from the four corners and the
ziro4ka [17]

Answer:

The original dimensions of the piece of metal are

Length: 36 inches

Width: 21 inches

Step-by-step explanation:

Let

x ----> the original length pf the piece of metal

y ----> the original width pf the piece of metal

we know that

x=y+15 ----> equation A

The volume of the box is equal to

V=LWH

we have

V=1,350\ in^3

L=(x-3-3)=(x-6)\ in\\W=(y-3-3)=(y-6)\ in

H=3\ in

substitute in the formula of volume

1,350=(x-6)(y-6)(3) ----> equation B

substitute equation A in equation B

1,350=(y+15-6)(y-6)(3)

solve for y

450=(y+9)(y-6)

y^2-6y+9y-54=450\\y^2+3y-504=0

Solve the quadratic equation by graphing

using a graphing tool

The solution is y=21

Find the value of x

x=21+15=36

therefore

The original dimensions of the piece of metal are

Length: 36 inches

Width: 21 inches

5 0
3 years ago
For the function<br> g(x) = 1/3x-2, find g(3a – 6)
Keith_Richards [23]

Answer:

g(3a – 6) = a - 4

Step-by-step explanation:

g(x) = 1/3x - 2

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= a - 2 - 2

= a - 4

7 0
3 years ago
Read 2 more answers
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