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3 years ago

HELP HELP HELP PLEASE

Mathematics

1 answer:

timama [110]3 years ago

5 0

The answer is k=8 (4,6/8,7/12,8)

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Plzzz I Need help ASAPPPPPPP

Hatshy [7]

Answer:

1, 3, and 4 would be correct answers

Step-by-step explanation:

1.) <u>-x - 2x - 3y - 2y + 1 + 1 = -3x -5y + 2</u>

2.) -3x + 2y + 3y + 2 = -3x + 5y + 2

3.) <u>-3x - y - y - y - y - y + 2 = -3x - 5y + 2</u>

4.) <u>-x - x - x - y - y - y - y - y + 1 + 1 = -3x - 5y + 2</u>

5.) x + x + x + y + y + y + y + y + 1 + 1 = 3x + 5y + 2

Hope this helps!

5 0

3 years ago

The commercial for the new Meat Man Barbecue claims that it takes 10 minutes for assembly. A consumer advocate thinks that the c

Andrews [41]

Answer:

There is enough evidence to make the conclusion that the population mean amount of time to assemble the Meat Man barbecue is not equal to 10 minutes (P-value=0.009).

Step-by-step explanation:

We have to perform an hypothesis test on the mean.

The null and alternative hypothesis are:

$H_0: \mu=10\\\\H_1: \mu \neq 10$

The significance level is $\alpha=0.05$ .

The test statistic t can be calculated as:

$t=\frac{M-\mu}{s/\sqrt{N} } =\frac{11.2-10}{3.1/\sqrt{50} }=2.737$

The degrees of freedom are:

$df=N-1=50-1=49$

The P-value (two-tailed test) for t=2.737 and df=49 is P=0.00862.

This P-value (0.009) is smaller than the significance level, so the effect is significant. The null hypothesis is rejected.

There is enough evidence to make the conclusion that the population mean amount of time to assemble the Meat Man barbecue is not equal to 10 minutes.

7 0

3 years ago

The sum of the squares of 3 consecutive positive integers is 116. What are the numbers?

irina [24]

1st number = n
2nd number = n+1
3rd number = n+2

sum of the squares of 3 consecutive numbers is 116

n² + (n+1)² + (n+2)² = 116
n² + (n+1)(n+1) + (n+2)(n+2) = 116
n² + [n(n+1)+1(n+1)] + [n(n+2)+2(n+2)] = 116
n² + n² + n + n + 1 + n² + 2n + 2n + 4 = 116
n² + n² + n² + n + n + 2n + 2n + 1 + 4 = 116
3n² + 6n + 5 = 116 Last option.

5 0

3 years ago

What is the missing length?

Tasya [4]

Answer: maybe 20 cm

7 0

3 years ago

Help plsssssssss ....

erik [133]

Tan is the right answer

hope it helps you ❣❣

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