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1 year ago

Use the quadratic formula to solve x^2-6x=-7. Show your work. Then describe the solution.

1 answer:

s2008m [1.1K]1 year ago

5 0

Answer: The solutions are x = 3+sqrt(2), and x = 3-sqrt(2). The quadratic equation has two solutions because it has a positive discriminant.

Step-by-step explanation:

Using the quadratic formula, we have: 6+-sqrt(8)/2, which become 3+-sqrt(2).

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What time does that say

zubka84 [21]

Answer:

5:15

Step-by-step explanation:

The shorter "leg" show the hour and the longer "leg" shows the minutes. The minutes around the clock goes by 5s.

4 0

2 years ago

A new sidewalk will be 5 feet wide, 100 feet long, and filled to a depth of 3 inches (0.25 foot) with concrete. How many cub

GarryVolchara [31]

Answer:

4.63 cubic yard.

Step-by-step explanation:

Given,

The length of sidewalk, l = 100 feet,

Width, w = 5 feet,

Depth, h = 3 inches = 0.25 feet,

Thus, the volume of the concrete needed for making the sidewalk,

$V=l\times w\times h$

$=100\times 5\times 0.25$

= 125 cubic feet,

∵ 1 cubic yard = 27 cubic feet,

⇒ 1 cubic feet = $\frac{1}{27}$ cubic yard,

Thus, the quantity of concrete needed = $\frac{125}{27}$ ≈ 4.63 cubic yard.

4 0

2 years ago

Kit bought a soft drink and a sandwich for 9.00 what was the price of each ifnthe sandwich cost 3.5 times as much as the soft dr

Annette [7]

Answer:

Sandwich = 6.75

Soft drink = 2.25

Step-by-step explanation:

9.00/4 = 2.25

2.25*3=6.75

8 0

2 years ago

Need help again, anyone??

Shalnov [3]

|x - 3| - 1 = 5

x - 3 - 1 = 5

x - 4 = 5

x = 9

-(x - 3) - 1 = 5

-x + 3 - 1 = 5

-x + 2 = 5

-x = 3

x = - 3

x = -3 , 9 matched the answers on the number line

Answer is B) |x - 3| - 1 = 5

6 0

3 years ago

Read 2 more answers

I'll mark the first correct answer brainliest. i only need the bottom question. thanks :)

tankabanditka [31]

Answer:

1/2x^2 -3

Step-by-step explanation:

The first equation is 1/2x^2 + 1 and since this equation is the first one minus 4 1-4= -3 so you would get this new equation.

3 0

3 years ago