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Paul [167]
3 years ago
7

Solve for x: 3(x + 1) = −2(x − 1) + 6. (1 point) Select one: a. 1 b. 4 c. 5 d. 25

Mathematics
2 answers:
mihalych1998 [28]3 years ago
8 0

Isolate the variable by dividing each side by factors that don't contain the variable.

x = 1

spin [16.1K]3 years ago
5 0

Answer:

The answer is A.1

Step-by-step explanation:  3(x + 1) = −2(x − 1) + 6 is turned into 3+3=−2 +2+6 once it is distributed.

then when you add the numbers you get  3+3=−2 +8

Then subtract 3 from both sides of the equation.Then simplify and add 2x to both sides and combine the like terms.

Finally your left with 5x=5 then divide and you get 1.

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Which shape is similar to shape 1
ki77a [65]
Can you please insert a photo so I can help you
5 0
2 years ago
Read 2 more answers
"There are 15 questions on an exam. In how many ways can the exam be answered with exactly 8 answers correct?"
erastovalidia [21]

Answer:

The exam can be answered with exactly 8 answers correct in 6435 ways.

Step-by-step explanation:

The order is not important.

For example, answering correctly the questions 1,2,3,4,5,6,7,8 is the same outcome as answering 2,1,3,4,5,6,7,8. So we use the combinations formula to solve this problem.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

"There are 15 questions on an exam. In how many ways can the exam be answered with exactly 8 answers correct?"

Combinations of 8 questions from a set of 15. So

C_{15,8} = \frac{15!}{8!(15-8)!} = 6435

The exam can be answered with exactly 8 answers correct in 6435 ways.

5 0
2 years ago
If you place a 24-foot ladder against the top of a 22-foot building, how many feet will the bottom of the ladder be from the bot
Naddika [18.5K]

Answer:

9.6

Step-by-step explanation:

Use the Pythagorean Theorem

a² + b² = c²

Plug in the knowns

a² + 22² = 24²

Subtract 22² from both sides

a² = 24² - 22²

a² = 576 - 484

a² = 92

Take the square root of both sides

a = 9.591663046625438

Rounded

a = 9.6 ft

8 0
3 years ago
Read 2 more answers
Please solve this GIVING BRAINLIEST and pls show proof!
storchak [24]

Answer:

b

Step-by-step explanation:

to prove if NP is tangent to MN

we could prove if NPM is a right triangle

By pythagorean theorem

a^2+b^2=c^2

where a=MN=33

b=NP=180

c=MP=MQ+QP=152+33=185

so

33^2+180^2=185^2

but

1089+32400 is not equal to 34225

33489 is different from 34225

7 0
3 years ago
Solve for r in the scientific formula d = rt.<br><br> r = _______
marta [7]
R = d/t is the answer. Hope this helped
4 0
2 years ago
Read 2 more answers
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