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2 years ago

What does 64. 75 inch height mean?

Mathematics

2 answers:

Likurg_2 [28]2 years ago

6 0

64.75 inch height means you are 5.3958333 feet tall

alex41 [277]2 years ago

3 0

Answer:

Step-by-step explanation:

60 inches is 5 feet, so just add on the remaining inches to get

5 feet and 4.75 inches

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A gas tank in a car has a capacity of60liters. On a full tank of gas, the car travels340miles. What is the mileage in miles per

8090 [49]

Answer:

5.66 miles per liter.

Step-by-step explanation:

$\frac{340}{60}= 5.66$

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3 years ago

Which point is on the line y = 1/2 x + 2? A.(2, 4) B.(2, 2) C.(4, 4) D.(4, 5)

KatRina [158]

y = 1/2 x + 2
if x = 4 then y = 1/2 (4) + 2 = 2 + 2 = 4

(4,4)

answer
C.(4, 4)

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3 years ago

The number of chocolate chips in an 18-ounce bag of Chips Ahoy! chocolate chip cookies is approximately normally distributed wit

sineoko [7]

Answer:

a) 0.013

b) 0.7

c) 0.866

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 1262

Standard Deviation, σ = 118

We are given that the distribution of number of chocolate chips is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(fewer than 1000 chocolate chips)

P(x < 1000)

$P( x < 1000) = P( z < \displaystyle\frac{1000 - 1262}{118}) = P(z < -2.220)$

Calculation the value from standard normal z table, we have,

$P(x < 1000) = 0.013 = 1.3\%$

b) P(contains more than 1200 chocolate chips)

$P(x > 1200) = P(z > \displaystyle\frac{1200-1262}{118}) = P(z > -0.5254)\\\\P( z > -0.5254) = 1 - P(z \leq -0.5254)$

Calculating the value from the standard normal table we have,

$1 - 0.300 = 0.7 = 70\%\\P( x > 1200) = 0.7$

c)P(contains between 1000 and 1400 chocolate chips)

$P(1000 \leq x \leq 1400) = P(\displaystyle\frac{1000 - 1262}{118} \leq z \leq \displaystyle\frac{1400-1262}{118}) = P(-2.22 \leq z \leq 1.169)\\\\= P(z \leq 1.169) - P(z < -2.22)\\= 0.879 - 0.013 = 0.866 = 86.6\%$

$P(1000 \leq x \leq 1400) = 86.6\%$

6 0

3 years ago

A research firm conducts a sample survey and discovers that 90% of people are more afraid of snakes than they are of flying. If

nikitadnepr [17]

Answer:

Different values of margin of error for different significance level.

Step-by-step explanation:

We are given the following in the question:

p = 90% = 0.9

Sample size, n 790

We have to find the margin of error.

Formula:

$z_{stat}\sqrt{\dfrac{p(1-p)}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get,

$ME = \pm 1.96\sqrt{\dfrac{0.9(1-0.9)}{790}}\\\\ME = \pm 0.021$

$z_{critical}\text{ at}~\alpha_{0.10} = 1.64$

$ME = \pm 1.64\sqrt{\dfrac{0.9(1-0.9)}{790}}\\\\ME =\pm 0.018$

$z_{critical}\text{ at}~\alpha_{0.10} = 2.58$

$ME =\pm 2.58\sqrt{\dfrac{0.9(1-0.9)}{790}}\\\\ME =\pm 0.028$

7 0

4 years ago

Can yall help me plss , I'm not sure what to do here

Wewaii [24]

Answer:

Step-by-step explanation:

The Pythagorean Theorem is l^2 + l^2 = H^2:

Substituting 12 and 16 as our l's we achieve:

12^2 + 16^2 = 144 + 256

144 + 256 = 400

Square root of 400 = 20

So H or Hypotenuse = 20.

Adding gives us 20 + 12 + 16 = 48 feet.

7 0

4 years ago