All categories

3 years ago

If 2x − 4(x + 1) = −12, evaluate x2 − 1.

1 answer:

6 0

2x-4(x+1)=-13
1) we solve this equation:
2x-4(x+1)=-12
2x-4x-4=-12
-2x=-12+4
-2x=-8
x=-8/-2
x=4

2) we evalute x²-1
x²-1=4²-1=16-1=15

Answer: 15

You might be interested in

What is 180% of 4090

murzikaleks [220]

Answer:

7362

Step-by-step explanation:

Multiply 1.8 with 4090.

4 0

3 years ago

Read 2 more answers

What answer is divisible by 8?

MariettaO [177]

Answer:

You didn't give the number choices, but I put an explanation below to help you figure out the correct answers.

Step-by-step explanation:

The rule for the number eight is :

If the last three digits are evenly divisble by 8, the number is divisble by 8.

Example:

17216

The last three digits are 216 and it is divisible by 8.

216 ÷ 8 = 27

27 x 9 = 216

Therefore, 17216 is divisible by 8.

8 0

3 years ago

Substitution method -3x + 3y = 3 -5x + y = 13

Naily [24]

Answer:

X=-1+Y

x=-13/5 + Y/5

Step-by-step explanation:

Hope this helps! :)

7 0

2 years ago

Solve the following inequality algebraically:

Bogdan [553]

Answer:

1 less-than x less-than 2

0 less-than x less-than 3

1 greater-than x greater-than 2

0 greater-than x greater-than 3

3 0

3 years ago

Find the value of the function sin 460

rodikova [14]

Answer:

Sin(460 radians)= .97054

sin(460 degrees)= 0.98480775301

Step-by-step explanation:

I'm not sure where you are from, but usually you are allowed to use a calculator. (At least I was when I took Algebra 2/Trig in 6th grade.)

You never specified radians or degrees so I will answer both.

sin(460 radians)= .97054

sin(460 degrees)= 0.98480775301

If you are not allowed to use a calc, then I suggest looking at unit circle videos on Khan Academy.

7 0

3 years ago