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3 years ago

Help me represent this easy equation: For every unit of X you must produce 3 of Y

Mathematics

1 answer:

Sergio [31]3 years ago

5 0

Answer:

Okay the, 3 of Y by every unit of X. Simple.

Step-by-step explanation:

You might be interested in

Fifteen more than twice the hours Carla worked last week is the same as three times the hours she worked this week decreased by

lapo4ka [179]

2x-15=3(x-15)
2x-15=3x-45
2x+30=3x
30=x

Let's check this work!

2(30)-15=3(30-15)
60-15=3(15)
45=45

She worked 45 hours each week

*the reason it is 2x-15 and not 15+2x is because "more than" is considered a "turn around word" meaning it is the opposite

3 0

3 years ago

Describe in detail how you would create a number line with the following points: 4, 1.25, the opposite of 3, and – (–2). Please

pochemuha

Well you would have to put 25 make in between 1,4, -2

6 0

3 years ago

The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 year

puteri [66]

Answer:

$z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29$

Step-by-step explanation:

information given

$\bar X=10.6$ represent the sample mean

$\sigma=4.1$ represent the population standard deviation

$n=45$ sample size

$\mu_o =12$ represent the value that we want to test

$\alpha=0.05$ represent the significance level for the hypothesis test.

z would represent the statistic

$p_v$ represent the p value for the test

Hypothesis to test

We want to test if the true mean is less than 12, the system of hypothesis would be:

Null hypothesis: $\mu \geq 10$

Alternative hypothesis: $\mu < 10$

The statistic is given by:

$z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}$ (1)

Replacing the info given we got:

We can replace in formula (1) the info given like this:

$z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29$

8 0

3 years ago

If 4x^2-100=0 the roots of the equation are

Marrrta [24]

Your equation:       4x² - 100   = 0

Factor the left side: (2x + 10) · (2x - 10) = 0

This equation is true if either factor is zero.

-- One factor:    2x + 10 = 0

Divide each side by 2: x + 5 = 0
Subtract 5 from each side: x = -5 .

-- The other factor:       2x - 10 = 0

Divide each side by 2: x + 5 = 0
Add 5 to each side: x =  5 .

8 0

3 years ago

Which sentence represents the inequality -2b + 7 > 27.5?

USPshnik [31]

Answer:

C , negative two times a number, plus seven , is fewer than twenty-seven and five tenths 

6 0

3 years ago