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navik [9.2K]
3 years ago
11

-38=-2(n+6)+6(3n+1) Can you please solve marking branlest show work

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
3 0

Answer:

n = -2

Step-by-step explanation:

-38 = -2n -12 +18n +6

-38 =16n -6

-38 +6 =16n

-32= 16n

n=-2

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I need help pls my school starts in 45 mins pls I need a answer
mezya [45]

Answer:

19 cm

Step-by-step explanation:

Let x be the length

The width would be x+11 since it's 11 cm longer

Perimeter = 2(length+width)

54 = 2(x+x+11)

54 = 2(2x+11)

54 = 4x+22

4x = 32

x = 8

Width = x+11

Width = 8+11

Width = 19

8 0
3 years ago
Consider the functions f(x) = 2x + 1 and g(x) = x^2 − 10 What is the value of f[g(3)]?
HACTEHA [7]

Answer:

-1

Step-by-step explanation:

Tip: Remember to always start from the inside, which would be g(3), in this case.

The first step in solving this problem is to solve for g(3).

To accomplish this, you must substitute 3 for x into the given equation g(x) = x^2 - 10

  • g(3) = 3^2 - 10
  • g(3) = 9 - 10
  • g(3) = -1

The next step is to substitute the answer of g(3), -1, for x in the given equation f(x) = 2x + 1.

Because the equation is asking for f[g(3)], it becomes f(-1) because g(3) = -1.

  • f(-1) = 2(-1) + 1
  • f(-1) = -2 + 1
  • f(-1) = -1

Therefore, f[g(3)], or f(-1), equals -1

6 0
3 years ago
The heights of 18-year-old men are approximately normally distributed with mean 68 inches and standard deviation 3 inches. What
Nutka1998 [239]

Answer:

The probability that an 18-year-old man selected at random is greater than 65 inches tall is 0.8413.

Step-by-step explanation:

We are given that the heights of 18-year-old men are approximately normally distributed with mean 68 inches and a standard deviation of 3 inches.

Let X = <u><em>heights of 18-year-old men.</em></u>

So, X ~ Normal(\mu=68,\sigma^{2} =3^{2})

The z-score probability distribution for the normal distribution is given by;

                              Z  =  \frac{X-\mu}{\sigma}  ~ N(0,1)

where, \mu = mean height = 68 inches

           \sigma = standard deviation = 3 inches

Now, the probability that an 18-year-old man selected at random is greater than 65 inches tall is given by = P(X > 65 inches)

       P(X > 65 inches) = P( \frac{X-\mu}{\sigma} > \frac{65-68}{3} ) = P(Z > -1) = P(Z < 1)

                                                                = <u>0.8413</u>

The above probability is calculated by looking at the value of x = 1 in the z table which has an area of 0.8413.

6 0
3 years ago
BEST ANSWER WILL GET MARKED BRAINIEST
Sloan [31]

Answer:

1,1

3,3

4,4

5,5

Step-by-step explanation:

see picture

4 0
3 years ago
Read 2 more answers
What is the solution of |2x| = –4?
DENIUS [597]
-2x=-4 or x=2
2x =-4 or x=-2
7 0
3 years ago
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