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Lelu [443]
2 years ago
10

Help me answer this please

Mathematics
1 answer:
Marizza181 [45]2 years ago
7 0

Answer:

77 feet below sea level.

Step-by-step explanation:

Since y is the time the submarine is ascending, we can plug it in for y and find our answer. We can create an equation where D is the depth and y is time ascending: D = -230 + 17y

Substitute 9 for y:

D = -230 + 17(9)

D = -230 + 153

D = -77

The depth of the submarine after 9 minutes will be 77 feet below sea level. Hope this helps, and Brainly will be highly appreciated.

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Determine if -8T- 20 = 4(-2T -5) has one solution, infinitely many solutions, or no solution
AnnZ [28]

Answer:

infinitely many solutions

Step-by-step explanation:

-8T- 20 = 4(-2T -5)

Distribute the 4

-8T- 20 = (-8T -20)

Add 8T to each side

-8T+8T- 20 = (-8T+8T -20)

-20 = -20

Since this is a true statement, there are infinitely many solutions

8 0
3 years ago
Read 2 more answers
Solve the problem please
Molodets [167]

Answer:

x = 9±sqrt(7)

Step-by-step explanation:

3(x-9)^2 =21

Divide each side by 3

3/3(x-9)^2 =21/3

(x-9)^2 =7

Take the square root of each side

sqrt((x-9)^2) =±sqrt(7)

x-9 =±sqrt(7)

Add 9 to each side

x = 9±sqrt(7)

4 0
2 years ago
francine has a square mosaic that is made from small glass squares. if there are 196 small squares in the mosiac, how many are a
Kruka [31]
There would be 56 becasue you calculate the square root of 196 which is 14 and multiply by 4 
5 0
3 years ago
Indentify the trangle
kirza4 [7]

Answer:

Isosceles Right

Step-by-step explanation:

Isosceles triangles have 2 sides of equal length and 2 angles of equal measure.  

An isosceles right triangle also includes a right angle of 90°

5 0
2 years ago
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Write the standard equation of the circle with center (-14, -3) that passes through the point (-5,3),
grin007 [14]

Answer:

(x + 14)^2 + (y + 3)^2 = 117

Step-by-step explanation:

Equation of a circle:

The equation of a circle with center (x_0,y_0) is given by:

(x - x_0)^2 + (y - y_0)^2 = r^2

In which r is the radius.

Center (-14, -3)

This means that x_0 = -14, y_0 = -3

So

(x - x_0)^2 + (y - y_0)^2 = r^2

(x - (-14))^2 + (y - (-3))^2 = r^2

(x + 14)^2 + (y + 3)^2 = r^2

Passes through the point (-5,3),

This means that when x = -5, y = 3. We use this to find the radius squared. So

(x + 14)^2 + (y + 3)^2 = r^2

(-5 + 14)^2 + (3 + 3)^2 = r^2

r^2 = 117

So, the equation of the circle is:

(x + 14)^2 + (y + 3)^2 = r^2

(x + 14)^2 + (y + 3)^2 = 117

6 0
2 years ago
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