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4 years ago

Which expression is equivalent to the given expression? 2x^2-11x-6

Mathematics

1 answer:

Sveta_85 [38]4 years ago

3 0

Answer:

X=-1/2,6

Step-by-step explanation:

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See pictures attached below. Will give Brainliest!

Phoenix [80]

Question 1 Answer:

Aunt 1 and Grandma 1 would fill gift bags.

Mom and Aunt 2 would make centerpieces.

You and Grandma 2 would blow up balloons.

Since you are pairing up to complete the tasks, these pairs each have the shortest times in their respective categories and therefore are the most logical pairing to complete tasks.

Question 2 Answer:

We use algebra and our previous pairings to determine the length of each task.

Gifts Bags --> 6/7 hours

x = time together

$\frac{1}{x}$ = rate of completion

Aunt 1 = $\frac{1}{1.5}$ Grandma 1 = $\frac{1}{2}$

$\frac{2}{3} +\frac{1}{2} = \frac{1}{x}$

$\frac{7}{6} = \frac{1}{x}$

$x = \frac{6}{7}$

Centerpieces --> 7/4 hours

x = time together $\frac{1}{x}$ = rate of completion

Mom = $\frac{1}{3.5}$ Aunt 2 = $\frac{1}{3.5}$

$\frac{2}{7} + \frac{2}{7} = \frac{1}{x}$

$\frac{4}{7} = \frac{1}{x}$

$x = \frac{7}{4}$

Balloons --> 15/16 hours

x = time together $\frac{1}{x}$ = rate of completion

You = $\frac{1}{1.5}$ Grandma 2 = $\frac{1}{2.5}$

$\frac{2}{3} + \frac{2}{5} = \frac{1}{x}$

$\frac{16}{15} = \frac{1}{x}$

$x = \frac{15}{16}$

Shortest amount of time to complete all tasks is:

$\frac{6}{7} + \frac{7}{4} + \frac{15}{16} = \frac{397}{112}$ ≈ 3.54 hours

Converting hours to hours and minutes --> 3 hours 32 minutes

Therefore they must arrive by 5:28pm to complete the tasks in time to leave at 9:00pm.

8 0

3 years ago

-6y + 12 = - 66 I feel like I lost my brain today I can’t think right... can you help me out

Igoryamba

Answer:

$- 6y + 12 = - 66 \\ - 6y = - 66 - 12 \\ - 6y = - 78 \\ y = - \frac{ - 78}{ - 6} \\ y = 13$

6 0

3 years ago

Read 2 more answers

what is the volume of the cone with radius 6 inches and height 10 inches express the answer in terms of pi

Vanyuwa [196]

Answer:

V = (1/3)(π)(6 in)²(10 in) = 120π in³

Step-by-step explanation:

The volume of a cone of radius r and height h is V = (1/3)πr²h.

Here, that volume is V = (1/3)(π)(6 in)²(10 in) = 120π in³

6 0

3 years ago

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What does 1/2 plus 1/3 plus 1/6 plus 1/2 plus 1/8 plus 1/4 equal?

BlackZzzverrR [31]

The answer is 15/8 or 1 and 7/8.

7 0

3 years ago

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X f(x)

Gekata [30.6K]

Answer:A

Step-by-step explanation:

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3 years ago