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3 years ago

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The sum of two numbers is -4.5. Six less than twice the value of the first number is equal to the second number. Find the number

s.

1 answer:

elena-s [515]3 years ago

8 0

Answer:

first is 3.5, second is 1

Step-by-step explanation:

-4.5 = x + 2x - 6

-4.5 - 6 = 3x

10.5 = 3x

10.5/3 = x

3.5 = x

2(3.5) - 6

7 - 6

1

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Your equation would be like this:

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3 years ago

The ground temperature at an airport is 16 °C. The temperature decreases by 5.6 °C for every increase of 1 kilometer above the g

love history [14]

0 km = 16

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3 years ago

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ladessa [460]

Answer:

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hope this helps

Step-by-step explanation:

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3 years ago

The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in t

andreyandreev [35.5K]

Answer:

The test statistic is c. 2.00

The p-value is a. 0.0456

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Step-by-step explanation:

We want to test to determine whether or not the mean waiting time of all customers is significantly different than 3 minutes.

This means that the mean and the alternate hypothesis are:

Null: $H_{0} = 3$

Alternate: $H_{a} = 3$

The test-statistic is given by:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

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This means that $n = 100$

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This means that $\mu = 3$

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This means that $X = 3.1$

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This means that $\sigma = 0.5$

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The test statistic is z = 2.

The p-value is

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At the 5% level

0.0456 < 0.05, which means that the null hypothesis is rejected.

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3 years ago

What’s the answer (no link I give brainly)

mixer [17]

Answer:

I belive it is C

Step-by-step explanation:

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