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jeka57 [31]
3 years ago
12

15. Paul is scuba diving and is 3.5 feet below

Mathematics
2 answers:
AlekseyPX3 years ago
5 0

Answer:

24min.

Step-by-step explanation:

he descends 0.5 feet per min. Its just like counting by 2's. I hope this helped!!

steposvetlana [31]3 years ago
5 0

Answer:

17 minutes

Step-by-step explanation:

This equation can be expressed as .5m+3.5=12 where m = minutes. I put this in a graphing calculator but to solve this you can

12-3.5=8.5

8.5/.5 = 17

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4. x^2+13x=-42
Mrrafil [7]
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Anaswer: <span>a. x = -6 or x = -7</span>

8 0
3 years ago
Are these triangles similar?
Oxana [17]
Not similar is correct
5 0
3 years ago
Read 2 more answers
Suppose Y varies directly with X and Y equals 10 when X equals -3 what direct variation equation relates XNY what is the value o
xeze [42]

Answer:

Expression: Y = -10/3 X

Y = 10/3

Step-by-step explanation:

If Y varies directly as X, then;

Y∝X

Y = kX

k is the constant of variation

If Y = 10 and X = -3

10 = -3k

k = -10/3

Substitute k = -10/3 into the expression Y = kX

Y = -10/3 X

This gives the required expression

To get the value of Y when X = -1

Recall that Y = kX

Y = -10/3 (-1)

Y = 10/3

Hence the value of Y is 10/3

8 0
2 years ago
The probability that a single radar station will detect an enemy plane is 0.65. (a) How many such stations are required to be 98
Inga [223]

Answer:

4 stations

Step-by-step explanation:

If we need to be at least 98% certain that an enemy plane flying over will be detected by at least one station, we must ensure that there is at most a 2% chance that no radar stations detect the plane.

The probability that a single radar station does not detect the plane is 0.35.

For n radar stations:

P=0.02=0.35^n\\n=\frac{log(0.02)}{log(0.35)}\\n=3.73

Rounding up to the next whole station, at least 4 stations are needed.

4 0
3 years ago
Evaluate x3 − 2y2 − 3x3 + z4 if x = 3, y = 5, and z = −3.
White raven [17]

Answer:

Step-by-step explanation:

x^3-2y^2-3x^3+z^4

(3)^3-2(5)^3+(-3)^4

-142

8 0
3 years ago
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