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3 years ago

3x= - 12 what is the answer

Mathematics

2 answers:

LuckyWell [14K]3 years ago

7 0

Negative 4, you would divide both sides by 3 to get x by itself and when you divide -12 by 3 you get -4

monitta3 years ago

3 0

Answer:

the correct answer is -4

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Use the properties of rational exponents to simplify 6/6 1/4

Alexeev081 [22]

Answer:

one

Step-by-step explanation:

Use the properties of rational exponents

6 0

2 years ago

6X plus 3Y equals 3 3x minus Y equals four

Delvig [45]

Answer:

Step-by-step explanation:

6x + 3y = 3 simplify by dividing both sides by 3 2x + y = 1

3x - y = 4 the 1st equation has a positive y, the 2nd has a negative y. Use elimination

to reduce them down to a single variable equation:

2x + y = 1

3x - y = 4

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3 years ago

It is believed that the average amount of money spent per U.S. household per week on food is about $98, with standard deviation

Makovka662 [10]

Answer:

Test statistic = 2

P-value = 0.0227

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = $98

Sample mean, $\bar{x}$ = $100

Sample size, n = 100

Population standard deviation, σ = $10

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 98\text{ dollars}\\H_A: \mu > 98\text{ dollars}$

Formula:

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

Putting all the values, we have

$z_{stat} = \displaystyle\frac{100 - 98}{\frac{10}{\sqrt{100}} } = 2$

Now, we can calculate the p-value from the normal table

P-value = 0.0227

6 0

3 years ago

An amusement park thrill ride swings its riders back and forth on a pendulum that spins. Suppose the swing arm of the ride is 62

babunello [35]

Answer:

118ft

Step-by-step explanation:

dont ask how i got it i just got the answer from my teacher but they didnt show me the work. ur welcome

7 0

3 years ago

What's the degree of x^2+9x-8

marishachu [46]

Answer:

Step-by-step explanation:

The degree of a function is the highest power any single term is raised to.

x^2 is the term that has the highest degree, so in this case, the degree is 2.

For example; in x^5-x^4-3x^3; the degree would be 5 because the highest power x is raised to is 5.

3 0

3 years ago