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vlada-n [284]
3 years ago
10

you are swimming each a 25-yard lap pool 3 seconds faster than your personal best what integer represents your change in time of

your personall best after 200 yards
Mathematics
1 answer:
True [87]3 years ago
7 0
24 seconds faster than your best
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It has been determined that 60% of the people in a certain midwest city who are responsible for preparing the evening meal have
natali 33 [55]

Answer:

Random sample, np \geq 10 and n(1-p) \geq 10, so yes, both conditions were satisfied.

Step-by-step explanation:

60% of the people in a certain midwest city who are responsible for preparing the evening meal have no idea what they are going to prepare as late as 4PM in the afternoon.

This means that p = 0.6

A recent survey was conducted from 1000 of these individuals.

This means that n = 1000

Also, a random sample, so the first condition was satisfied.

The sample size must be large (so that at least 10 or more successes and failures).

np = 1000*0.6 = 600 \geq 10

n(1-p) = 1000*0.4 = 400 \geq 10

So yes, both conditions were met.

4 0
3 years ago
James defines a circle as "the set of all the points equidistant from a given point." His statement is not precise enough becaus
Setler [38]
Okay so James needs to define a circle
8 0
3 years ago
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The measures of the angles of a triangle are shown in the figure below. Solve for x.
morpeh [17]

Answer:

63

Step-by-step explanation:

40+77=117

180-117=63

3 0
3 years ago
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-8=-(x+4). Please help I don't know the answer or steps to solve this equation.
Ne4ueva [31]

Answer:

x = 4

Step-by-step explanation:

First u need to distribute the -1 to (x + 4), creating the equation, -8 = -x - 4. Then add the -4 to both sides, and you get, -4 = -x. Then divide by -1 to both sides, and x = 4.

6 0
3 years ago
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A ball is thrown straight up with a initial velocity of 56 feet per second . The height , h , of the ball t seconds after it is
Tju [1.3M]

<span>Formula: H(t) = 56t – 16t^2   </span>

H(t) = - 16t^2 + 56t

<span><span>A.      </span>What is the height of the ball after 1 second? H (1) = 56(1) – 16(1) ^2 = 40 pt.</span>

<span><span>B.      </span>What is the maximum height? X = - (56)/2(- 16) = 1.75 sec h (1.75) = 56(1.75) – 16(1.75) ^2 h (1.75) = 49ft.</span>

<span><span>C.      </span><span>After how many seconds will it return to the ground? – 16t^2 + 56t = 0   - 8t =0 t = 0</span></span>

<span><span>-          </span><span>8t (2 + - 7) = 0     2t – 7 = 0  t = 7/2   Ans: 3.5 seconds</span></span>

3 0
3 years ago
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