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3 years ago

IF U A REAL ONE HELP

Mathematics

1 answer:

lesya [120]3 years ago

4 0

D is the answer hope this helps

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Chris runs 6 miles in 50 minutes. At the same rate, how many miles would he run in 35 minutes?

Nataly_w [17]

You could either find how far Chris can run in 60 minutes, or write an equation of ratios:

x 35 min
--------- = --------------
6 mi 50 min

Solving for x: 50x = 210; x = 4.2 miles (answer)

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3 years ago

(1 point) Let y=ex/5. Find the differential dy when x=2 and dx=0.2 Find the differential dy when x=2 and dx=0.01

Deffense [45]

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Actually Welcome to the Concept of the Differential Calculus.

Since, we know this is a definite calculus,

thus we get here as, by using the Chain Rule.

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2 years ago

Which angle is complementary to Angle C O D?

zepelin [54]

Answer:

Angle B O C

Step-by-step explanation:

Complementary angles add up to 90

Angles COD and BOC form a right angle which means they add up to 90.

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3 years ago

Read 2 more answers

Suppose you pick and replace marbles from a bag, one after another. If the bag contains 3 red marbles, 3 white marbles, and 6 bl

alexandr402 [8]

Answer:

I think you forgot part of the question

Step-by-step explanation:

8 0

2 years ago

The temperature of coffee served at a restaurant is normally distributed with an average temperature of 160 degrees Fahrenheit a

posledela

Answer:

The 20th percentile of coffee temperature is 155.4532 degrees Fahrenheit.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 160 degrees

Standard Deviation, σ = 5.4 degrees

We are given that the distribution of temperature of coffee is a bell shaped distribution that is a normal distribution.

Formula:

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

We have to find the value of x such that the probability is 0.2

$P( X < x) = P( z < \displaystyle\frac{x - 160}{5.4})=0.2$

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

$\displaystyle\frac{x - 160}{5.4} = -0.842\\\\x = 155.4532$

Thus,

$P_{20}=155.4532$

The 20th percentile of coffee temperature is 155.4532 degrees Fahrenheit.

7 0

2 years ago