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3 years ago

The graph if a function is always a straight line true or false

Mathematics

1 answer:

HACTEHA [7]3 years ago

4 0

This statement is false. Graphs of functions are NOT always straight lines.

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X - 8 + (-8x) - 15 when x = -9

Irina-Kira [14]

Answer:

Step-by-step explanation:

Plug x=-9 in. -9-8+(-9×(-8)) -15=-17+72-15=-17+72-15=40. I hope this helped!

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4 years ago

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What is 20 minus 5 as distributive property

vitfil [10]

Answer:

5(4-1)

Step-by-step explanation:

5(4-1)

20-5

5x4= 20

5x1= 5

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4 years ago

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3 years ago

A laboratory technician needs to make a 63-liter batch of a 20% acid solution How can the laboratory technician combine a batch

Gre4nikov [31]

Let x be the volume (liters) of pure (at 100%) acid needed
Let y be the volume (liters) of the other acid (at 10%) needed
The final solution will be:
a) x+ y = 63 liters, AND their respective concentration in acid: is
100% x & 10% :y that will generate 63 liters at 20%
b) x +0.1 y = 63x 0.2 = 12.6

Let's solve this system of 2 equations:

x + y =63
x + 0.1 y = 12.6

Solving it will give you:

x= 7 liters at 100%
y = 56 liters at 10%

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4 years ago

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In response to the increasing weight of airline passengers, the Federal Aviation Administration (FAA) in 2003 told airlines to a

aleksandr82 [10.1K]

Answer:

There is a 33.72% probability that the total weight of the passengers exceeds 4500 pounds.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

There are 22 passengers. Passengers average 190 pounds in the summer, including clothing and carry-on baggage. But passengers vary, and the FAA did not specify a standard deviation. A reasonable standard deviation is 35 pounds. This means that $\mu = 22*190 = 4180, \sigma = 22*35 = 770$ .

What is the approximate probability that the total weight of the passengers exceeds 4500 pounds?

This probability is 1 subtracted by the pvalue of Z when $X = 4500$ . So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{4500 - 4180}{770}$

$Z = 0.42$

$Z = 0.42$ has a pvalue of 0.6628.

This means that there is a 1-0.6628 = 0.3372 = 33.72% probability that the total weight of the passengers exceeds 4500 pounds.

7 0

3 years ago