2 years ago

Identify the slope of the equation -x+2y=-14

Mathematics

2 answers:

taurus [48]2 years ago

5 0

The slope is negative one-half or written in point slope form y= -1/2x-7

Salsk061 [2.6K]2 years ago

4 0

The slope of the equation -x+2y=-14 is 1/2.

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olya-2409 [2.1K]

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2 years ago

A coin is tossed and a number cube is rolled. What is the probability that the coin shows heads and the number cube shows 5? a.

Inessa [10]

Answer:

1/12

Step-by-step explanation:

P( coin = heads) = number of heads / total = 1/2

P( cube = 5) = number of 5's / total =1/6

P( heads, 5) =1/2 * 1/6 = 1/12

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2 years ago

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Harry has 8 more marbles than hermione. together they have 40 marbles. how many does each have?

aksik [14]

Answer:

Harry has 24; Hermione has 16

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2 years ago

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What is the surface area of the triangular prism? A. 13 in.2 B. 36 in.2 C. 78 in.2 D. 84 in.2

NISA [10]

Answer :36in2

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2 years ago

Based on FAA estimates the average age of the fleets of the 10 largest U.S. commercial passenger carriers is 13.4 years with a s

Aliun [14]

Answer : 0.0129

Step-by-step explanation:

Given : Based on FAA estimates the average age of the fleets of the 10 largest U.S. commercial passenger carriers is $\mu=13.4$ years and standard deviation is $\sigma=1.7$ years.

Sample size : $n=40$

Let X be the random variable that represents the age of fleets.

We assume that the ages of the fleets of the 10 largest U.S. commercial passenger carriers are normally distributed.

For z-score,

$z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

For x=14

$z=\dfrac{14-13.4}{\dfrac{1.7}{\sqrt{40}}}\approx2.23$

By using the standard normal distribution table , the probability that the average age of these 40 airplanes is at least 14 years old will be :-

$P(x\geq 14)=P(z\geq2.23)\\\\=1-P(z$

Hence, the required probability = 0.0129

6 0

2 years ago