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jarptica [38.1K]
3 years ago
9

If t>0 and t^2-25=0 what is the value of t?

Mathematics
2 answers:
noname [10]3 years ago
8 0

Answer:

t =5

Step-by-step explanation:

t^2 - 25 = 0

Add 25  to each side

t^2 - 25 +25= 0+25

t^2 = 25

Take the square root of each side

sqrt(t^2) = sqrt(25)

t = ±5

t >0 so t must be 5

Karo-lina-s [1.5K]3 years ago
7 0

Answer:

5

Step-by-step explanation:

5 > 0 (True)

Plug in 5 for t in the equation.

t² - 25 = 0

(5)² - 25 = 0

(5 * 5) - 25 = 0

(25) - 25 = 0

0 = 0  (true).

~

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Using the following equation, find the center and radius of the circle: x^2 + y^2 +2x − 4y − 20 = 0
DanielleElmas [232]
You have to complete the squares on both the x terms and the y terms in order to solve this. Move the 20 over to the other side so it's negative. Group the x terms together and complete the square to get (x^2+2x+1) and then do the same with the y terms: (y^2-4y+4). You have to add 1 and 4 to other side with the 20 to get a 25. Then create 2 perfect square binomials within each x and y value to get the vertex coordinates: (x+1)^2 + (y-2)^2 = 25. This tells us that the vertex is located at (-1, 2) and the radius is the square root of 25 which is 5.So the answer is the first choice above.
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3 years ago
Is my answer actually incorrect and if so how?
mr Goodwill [35]

Answer:

B. 0.159

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B=  taking sociology class

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P(B) = 0.32

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5 0
3 years ago
Indira is climbing and starts at 182.5 meters above sea level each hour she descends 36.5 meters the table shows the function re
VLD [36.1K]

The function relating in indira‘s height to the number of hours she mountain climbing is: y = -36.5x + 182.5

A linear equation is given by:

y = mx + b;

where m is the slope(rate of change), b is the initial value of y, y is the dependent variable and x is the independent variable.

Let x represent the number of hours spent climbing the mountain and y represent the distance above see level.

She starts at 182.5 meters above sea level, hence; b = 182.5 meters

She descends 36.5 meters each hour, hence m = -36.5 meter per hour

Therefore the equation becomes:

y = -36.5x + 182.5

Find out more at: brainly.com/question/19586594

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2 years ago
How many solutions y= -2x -4 and y=3x plus 3
Oksi-84 [34.3K]

Answer:

The number of solutions is one

Step-by-step explanation:

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3 years ago
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It’s b if not d if I’m wrong
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