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guajiro [1.7K]
2 years ago
12

Fred jumped into a lake from a rock 7 feet above the surface of the water. He sank five feet into the water and continued to swi

m down two additional feet.
•Sophie stated that the total distance would be 0 because the heights were additive inverses of each other.
•Jake disagrees and thinks that Fred covered 14 feet. He found his answer using a number line.
Do you agree with Sophie or Jake?
Mathematics
1 answer:
Alekssandra [29.7K]2 years ago
3 0

Answer:

Sophie

Step-by-step explanation:

Jake is wrong because when he jump he was out of the water and you're supposed to count what he swam in the water so Sophie is correct.

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Three equivalent ratios are: 8/6, 12/9, 16/12
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What is work shown for 3 + 2/5x = -1
polet [3.4K]

Answer:

x = -1/10

Step-by-step explanation:

3 + 2/5x = -1

multiply through by 5x to make the equation linear

3 × 5x + 2/5x × 5x/1 = -1 × 5x

15x + 2 = -5x

collect like terms

15x + 5x = -2

20x/20 = -2/20

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5 0
3 years ago
Drew's weekly allowance is $8.00. C. the video game that drew and Jan want to buy cost $5.5. Write an expression to show how man
Ray Of Light [21]
Is that suppose to be 5.50
4 0
3 years ago
Read 2 more answers
When you roll two number cubes, what are the odds in simplest form against getting two numbers greater than 3?
tia_tia [17]

Answer:

1:3.

Step-by-step explanation:

Probability(getting > 3 on one roll) = 3/6 = 1/2.

So on 2 cubes rolled the probability   of getting > 3 is 1/2 * 1/2 = 1/4.

As a ratio this is 1:3.

6 0
1 year ago
The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with mean 1263 and a stan
DENIUS [597]

Answer:

(a) The 29th percentile for the number of chocolate chips in a bag is 1198.65.

(b) The number of chocolate chips in a bag that make up the middle 95​% of bags are [1146, 1380].

(c) The inter-quartile range of the number of chocolate chips in a bag of chocolate chip​ cookies is 157.83.

Step-by-step explanation:

Let the random variable <em>X</em> represent the number of chocolate chips in a bag of chocolate chip cookies.

The random variable <em>X</em> is normally distributed with mean, <em>μ </em>= 1263 and a standard deviation, <em>σ </em>= 117.

(a)

Compute the 29th percentile for the number of chocolate chips in a bag as follows:

P (X < x) = 0.29

⇒ P (Z < z) = 0.29

The value of <em>z</em> for the above probability is, <em>z</em> = -0.55.

Compute the value of <em>x</em> as follows:

z=\frac{x-\mu}{\sogma}\\-0.55=\frac{x-1263}{117}\\x=1263-(117\times 0.55)\\x=1198.65

Thus, the 29th percentile for the number of chocolate chips in a bag is 1198.65.

(b)

According to the Empirical rule 95% of the normally distributed data lies within 2 standard deviations of the mean.

P (μ - σ < X < μ + σ) = 0.95

P (1263 - 117 < X < 1263 + 117) = 0.95

P (1146 < X < 1380) = 0.95

Thus, the number of chocolate chips in a bag that make up the middle 95​% of bags are [1146, 1380].

(c)

The inter-quartile range of the normal distribution is:

IQR = 1.349 <em>σ</em>

Compute the inter-quartile range of the number of chocolate chips in a bag of chocolate chip​ cookies as follows:

IQR = 1.349 <em>σ</em>

      = 1.349 × 117

      = 157.833

Thus, the inter-quartile range of the number of chocolate chips in a bag of chocolate chip​ cookies is 157.83.

5 0
3 years ago
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