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3 years ago

The slope of the line whose equation is 2x + 5y + 1 = 0 is A: -2/5 B -1/5 C 5/2

Mathematics

2 answers:

ArbitrLikvidat [17]3 years ago

8 0

The answer would be C 5/2

kompoz [17]3 years ago

8 0

C is the answer which is 5/2

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Find the inverse of the function y = x2 - 12.

Semmy [17]

Good evening ,

Answer:

The inverse of the function y = x² - 12 is

x = √(y + 12)

Step-by-step explanation:

for y ≥ -12 :

x² - 12 = y ⇔ x² = y + 12 ⇔ x = √(y + 12).

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3 years ago

-4.8[6.3x-4.8]=-58.56

DENIUS [597]

Answer:

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Step-by-step explanation:

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3 years ago

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16. An experiment is carried out to determine how different pH values of soil will affect the growth of tomato plants. In this

svetoff [14.1K]

Step-by-step explanation:

2. Amount of soil provided.

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3 years ago

A rectangular prism has a length of 2 1/2 cm, a width of 2 1/2 cm, and a height of 5 cm. Justin has a storage container for the

julsineya [31]

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4 years ago

Consider the following hypothesis test: H 0: 20 H a: < 20 A sample of 60 provided a sample mean of 19.5. The population stand

viva [34]

Answer:

We reject the null hypothesis and accept the alternate hypothesis. Thus, it be concluded that the population mean is less than 20.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 60

Sample mean, $\bar{x}$ = 19.5

Sample size, n = 60

Alpha, α = 0.05

Population standard deviation, σ = 1.8

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 20\\H_A: \mu < 20$

We use One-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{19.5 - 20}{\frac{1.8}{\sqrt{60}} } = -2.151$

Now, $z_{critical} \text{ at 0.05 level of significance } = -1.64$

Since,

$z_{stat} < z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis. Thus, it be concluded that the population mean is less than 20.

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3 years ago