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Nesterboy [21]
3 years ago
10

4. Twelve nails have a mass of 423 grams. The number of grams per nail is between what 2

Mathematics
1 answer:
salantis [7]3 years ago
4 0

Answer:

C

Step-by-step explanation:

you do twelve divided by 423 to get your answer.

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The first term of a geometric sequence is 3. The sum of the first two terms is 15 and the sum of the first 3 terms is 63.  Deter
pav-90 [236]
63 is the common term. 3+12+48=63
8 0
3 years ago
If f(x) = 3x - 1 and f(x) = 3f(x) = 3, find x.​
Elena L [17]

Answer:

x = 4/3

Step-by-step explanation:

f(x) = 3x - 1

f(x) = 3

set equal

3x - 1 = 3

add 1 to both sides

3x = 4

Divide both sides by 3

x = 4/3

7 0
3 years ago
A normally distributed data set has a mean of 0 and a standard deviation of 2. Which of the following is closest to the percent
frutty [35]

A normally distributed data set has a mean of 0 and a standard deviation of 2. The closest to the percent of values between -4.0 and 2.0 would be 84%.

<h3>What is the empirical rule?</h3>

According to the empirical rule, also known as the 68-95-99.7 rule, the percentage of values that lie within an interval with 68%, 95%, and 99.7% of the values lies within one, two, or three standard deviations of the mean of the distribution.

P(\mu - \sigma < X < \mu + \sigma)  \approx 68\%\\P(\mu - 2\sigma < X < \mu + 2\sigma)  \approx 95\%\\P(\mu - 3\sigma < X < \mu + 3\sigma)  \approx 99.7\%

A normally distributed data set has a mean of 0 and a standard deviation of 2.

Z=(x-\mu)/\sigma

P(x=-0.4)\\\\z=(-0.4-0)/2\\\\= -0.2\\\\P(x=2)\\z=(2-0)/2\\\\=1

P(-0.4 < x < 2)=p(-0.2 < z < 1)=p(-0.2 < z < 0)+p(0 < z < 1)……….(by symmetry)

=.49865+.3413

.83995…….(by (http://83995…….by) table value)

=.8400 × 100

=84%

Learn more about the empirical rule here:

brainly.com/question/13676793

#SPJ2

4 0
2 years ago
Carrie spent
leva [86]

Answer:

24 dollars.

Step-by-step explanation:

1/4 + 1/3 = 3/12 + 4/12 = 7/12

7/12 a + 8 = 22

7/12 a = 14

a = 14 x 12/7

a = 24

5 0
2 years ago
3.5y−12=1.5(y−2)<br> A) One solution<br> B) No solution<br> C) Infinite solutions
Montano1993 [528]

Answer:

Step-by-step explanation:

3.5y - 12 = 1.5y - 3

2y -12 = -3

2y = 9

y = 4.5

the answer is a. one solution

5 0
3 years ago
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