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Oliga [24]
2 years ago
9

Jill swam 200 meters in 2 minutes 42 seconds. If each lap is 50 meters long, which time is her estimated time, in seconds, per l

ap? (2 minutes 42 seconds = 162 seconds)
A. 32
B. 40
C. 48
D. 60
Mathematics
2 answers:
KatRina [158]2 years ago
4 0

Answer: B

Step-by-step explanation:

there are 4 laps in 200 metres. 200m÷50m

2min 42 sec=120 sec+42sec (162sec)

so,

162÷4=40.5

Answer is B

rosijanka [135]2 years ago
3 0

Answer

The answer is 48 i hope this helped

Step-by-step explanation:

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What is the vertex of the graph of the function f(x) = x2 + 8x - 2?
vlabodo [156]

Answer:

Vertex is (-4, -18)

Step-by-step explanation:

f(x) = ax^{2} +bx +c

Let (h, k) be the vertex

An easy way to find h is to use the formula h = -b/2a

In your case where f(x) = x^{2} +8x - 2   a = 2 and b = 8

So, h =  -8/2(1) = -8/2 = -4

Substitue -4 in for x to find k

k = (-4^{2}) + 8(-4) - 2

  = (16) - 32 - 2

  = 16 - 32 - 2

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Vertex is (-4, -18)

Note:  Another way to find the vertex is to complete the square, but this can really be difficult in some cases

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2 years ago
The functions f(x) and g(x) are described below:
AfilCa [17]

Answer:

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Step-by-step explanation:

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If we shift the graph of g(x) up to obtain f(x), then the y-intercept must move from -7 to 8.


This means that the graph will move up by;


8--7=8+7=15 units.



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Bogdan [553]

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