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3 years ago

Which value from the solution set will satisfy the equation below? x2 - 3 = 14

Mathematics

2 answers:

denis23 [38]3 years ago

8 0

Is the x2 meant to be x squared?

vladimir2022 [97]3 years ago

6 0

I got the square root of 17 but ‍♀️

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The height of the snow was 84 inches in the beginning of the week. it melts at a rate of 0.15 inches per hour. how many hours wo

jenyasd209 [6]

Answer:

146.66 hours.

Step-by-step explanation:

Given: Height of snow at the beginning is 84 inches.

Snow melting rate is 0.15 inches per hour.

Now, finding number of hours to reach 62 inches of snow.

First lets find the number of inches reduced.

Reduced inches of snow= $84\ inches - 62\ inches= 22\ inches.$

∴ Reduced inches of snow is 22 inches after melting at 0.15 inches per hour.

Next finding hours to melt 22 inches of snow.

Time= $\frac{total\ size}{melting\ rate}$

⇒ Time= $\frac{22}{0.15} = 146.66\ hours$

Hence, 146.66 hours would it take for the snow to reach 62 inches.

7 0

3 years ago

Tan²Ф+sec²Ф=3 can someone solve this by finding all answers as the nearest whole degree

Stels [109]

Recall that

tan²(x) + 1 = sec²(x)

for all x ≠ (2n + 1) 90°, where n is any integer. (That is, whenever x isn't an angle that is an odd multiple of 90°.)

Then

tan²(Φ) + sec²(Φ) = 3

tan²(Φ) + (tan²(Φ) + 1) = 3

2 tan²(Φ) + 1 = 3

2 tan²(Φ) = 2

tan²(Φ) = 1

tan(Φ) = ±√1

tan(Φ) = 1 or tan(Φ) = -1

Φ = tan⁻¹(1) + n 180° or Φ = tan⁻¹(-1) + n 180°

Φ = 45° + n 180° or Φ = -45° + n 180°

The first family of solution is the set of angles

{…, -315°, -135°, 45°, 225°, 405°, …}

and the second family is the set

{…, -405°, -225°, -45°, 135°, 315°, …}

(showing the solutions for n = -2 to n = 2)

You can condense the solution set into one family by noticing each angle is 45° plus some multiple of 90°, so that

Φ = 45° + n 90°

If you're looking for solutions in a given range, such as 0 ≤ Φ < 360°, then

Φ = 45°, 135°, 225° or 315°

3 0

3 years ago

Write in scientific notation: .0000604

NISA [10]

Step-by-step explanation:

Scientific notation : 6.04 * 10^-5.

8 0

3 years ago

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PLS HELP ME ASAP I DONT HAVE TIME. IT ALSO DETECTS IF ITs RIGHT OR WRONG.

grin007 [14]

Answer:

It should be 9 m :)

Step-by-step explanation:

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3 years ago

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The following table gives values of a differentiable function y= f(x). x: 0 1 2 3 4 5 6 7 8 9 10. y:-1 2 3 2 -2 1 2 3 5 6 8. Now

nikklg [1K]

First thing to do with this problem is to plot the given data in MS excel. We can see in the graph that the minima (lowest point of the graph) is at (4,-2) and the maxima is at (2,3). The critical points are points which the direction changes from one side to another.

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4 years ago