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3 years ago

Is the following an identity or have no solution. 2(a-4)=4a-(2a+4)

2 answers:

6 0

You multiply everything in the parenthesis by the number outside.
In this case its 2 and -1. the first part is 2a-8 the second part is 4a -2a+16a
so it looks like this 2a-8=4a-2a+16a.
combine like terms and get 2a-8=18a.
Subtract the other 2a from the other side and you have 8=16a
divide each side by 16 and you have 8/16 which is one half.

Sati [7]3 years ago

4 0

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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△ABC has vertices at A(1, 1), B(2, 3), and C(3, 1). △DEF has vertices at D(–1, 1) , E(–2, 4), and F(–3, 1). Is △ABC congruent to

SVETLANKA909090 [29]

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4 years ago

What is 5x6 equal too?

alexgriva [62]

Answer:

Step-by-step explanation:

6+6+6+6+6 or 5+5+5+5+5+5

3 0

3 years ago

Read 2 more answers

3/4 of a piece of metal has a mass of 15kg.what is the mass of 2/5 of the piece of metal

olga2289 [7]

3/4=15
let,
total mass is x
x=4×15/3
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so, total mass = 20 kg

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Hope this helps!

8 0

3 years ago

The linear equation y=-2x+4 is represented on the graph below. A second linear equation is represented by the data in the table.

atroni [7]

Answer:

The solution of the system of equations is (2,0)

Step-by-step explanation:

step 1

Find the equation of the second line

we have

y=-2x+4 ----> First equation

Find the second linear equation

we have

(-4,-3), (0,-1),(2,0),(6,2)

Find the slope m

Points (0,-1),(2,0) ---> y-intercept and x-intercept of the second equation

m=(0+1)/(2-0)

m=1/2

The equation of the line into slope intercept form is equal to

y=(1/2)x-1

step 2

Solve the system of equations

we have

y=-2x+4 ----> First equation

y=(1/2)x-1 ----> Second equation

Solve by graphing

The intersection point is (2,0)

therefore

The solution of the system of equations is (2,0)

see the attached figure

4 0

4 years ago

Read 2 more answers

A person invests 1000 dollars in a bank. The bank pays 4% interest compounded quarterly. To the nearest tenth of a year, how lon

Ray Of Light [21]

Answer:

The amount is $8358.7 and the interest is $3858.7.

Step-by-step explination

STEP 1: To find amount we use formula:

A = P

1 +

n·t

A = total amount P = principal or amount of money deposited, r = annual interest rate n

= number of times compounded per year t = time in years In this example we have

P = $4500 , r = 7% , n = 2 and t = 9 years

After plugging the given information we have

A = 4500

1 +

0.07

2·9

A = 4500 · 1.03518

A = 4500 · 1.857489

A = 8358.7

STEP 2: To find interest we use formula A = P + I, since A = $8358.7 and P = $4500 we

have:

A = P + I

8358.7 = 4500 + I

I = 8358.7 − 4500

I = 3858.7

4 0

3 years ago