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3 years ago

Write a real-world problem that could be represented by the inequality. 3x + 6 > 27

1 answer:

8 0

Hello! We see that 6 is the fixed amount. x represents the amount of something, and the solution makes a number $27. Let's make a real-world problem and then execute it.

Fawn has $6 in her piggy bank. She makes bracelets to sell to family & friends for $3 each. She wants to buy a video game that with tax, costs a little over $27. How many bracelets would Fawn have to sell in order to have enough money to buy the video game?

How to solve it:

So we have the expression of 3x + 6 > 27. First off, subtract 6 from both sides. 6 - 6 cancels out. 27 - 6 is 21. That's 3x > 21. Now, divide each side by 3 to isolate the x. 3x/3 cancels out. 21/3 is 7. There. x > 7. Fawn will have to sell more than 7 bracelets in order to have enough money for the game.

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Write an inequality for the sentence

artcher [175]

X - 15 $\leq$ 6

So the answer is B

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4 years ago

What number replaces the ∆? 4 = 4 6 + 4 = ∆ + 4

tatiyna

Answer:Triangle is 6. Question wasn’t very clean so I hope this helps

Step-by-step explanation:

4=4

6+4= ∆+4

Subtract 4 from each side

6=∆

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4 years ago

HELPPPP !!! ASAP!!!!

Akimi4 [234]

Answer:

Step-by-step explanation:

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3 years ago

Jacob knows that the adult population gets, on average, eight hours of sleep each night. A hypothesis test can help him see if c

Vlad [161]

Answer:

The t-statistic that Jacob calculates is $t = -2.71$

Step-by-step explanation:

Jacob knows that the adult population gets, on average, eight hours of sleep each night. A hypothesis test can help him see if college students are different from the adult population.

At the null hypothesis, we test if the mean is of 8 hours, that is:

$H_0: \mu = 8$

At the alternative hypothesis, we test if the mean is different of 8 hours, that is:

$H_1: \mu \neq 8$

The test statistic is:

$t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, s is the standard deviation and n is the size of the sample.

8 is tested at the null hypothesis:

This means that $\mu = 8$

From a sample of 101 students, Jacob tabulated that his sample of students got an average of 7.3 hours of sleep each night, with a standard deviation of 2.6.

This means that $n = 101, X = 7.3, s = 2.6$

What is the t-statistic that Jacob calculates?

$t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}$

$t = \frac{7.3 - 8}{\frac{2.6}{\sqrt{101}}}$

$t = -2.71$

The t-statistic that Jacob calculates is $t = -2.71$

6 0

3 years ago

10. T-shirts normally cost $12 each. Two shops have a

lilavasa [31]

Answer:

The EcoShir shop

Step-by-step explanation:

as he needs to pay 4dollar for 1 shirt

so if he pays for 3 = 12 dollar for 4 shirts

and thus need to pay maximum 96 dollars

for 32 Tshirts

but needs to pay 120 in budgetShirts for 30 Tshirts

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3 years ago