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3 years ago

The graph shows Cali's changing distance as she swam during her swim practice. What does point A tell you about her speed?

1 answer:

5 0

When a product fails to perform as warranted, this is called a) contractual liability. O b) product malfunction. c) malicious manufacture. d) breach of warranty

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1. In the spring of 2017, the Consumer Reports National Research Center conducted a survey of 1007 adults to learn about their m

avanturin [10]

Answer:

The correct answer is "1668". A further solution is provided below.

Step-by-step explanation:

According to the question,

Estimated proportion,

$\hat{p} = \frac{574}{1007}$

$=0.57$

Margin of error,

E = 0.02

Level of confidence,

= 90%

= 0.90

Critical value,

$Z_{0.10}=1.65$

Now,

⇒ $0.02=1.65\times \sqrt{\frac{0.57\times 0.43}{n} }$

$0.0004=2.7225\times \frac{0.2451}{n}$

$n=\frac{2.7225\times 0.2451}{0.0004}$

$=1668.21$

or,

$n \simeq 1668$

5 0

3 years ago

What is 20÷1÷[(10÷5)÷2]

marysya [2.9K]

Answer: 20

Step-by-step explanation:

Follow order of operations (PEMDAS)

20÷1÷[(10÷5)÷2] Given

20÷1÷[(2)÷2] Do 10÷5 in parenthesis

20÷1÷[(1)] Do (2)÷2

20÷1 Do 1÷[(1)]

20 Do 20÷1, and that is your answer

8 0

4 years ago

Don works in home construction. He determined that the function t(A)=144A/9.252 gives the total number of 9 in. tiles needed to

Oksanka [162]

Answer:

6,226 tiles of 9 in are needed to cover an area of 400 square feet

Step-by-step explanation:

Let

A -----> an area in square feet

t(A) ---> the total number of 9 in. tiles needed

we have

$t(A)=\frac{144A}{9.252}$

For A=400 ft^2

substitute in the equation and solve for t

$t(400)=\frac{144(400)}{9.252}$

$t(400)=6,226\ tiles$

That means -----> 6,226 tiles of 9 in are needed to cover an area of 400 square feet

6 0

3 years ago

The manufacturer of a weight-training bench spends $15 to build each bench and sells them for $32. The manufacturer also has fix

nasty-shy [4]

Answer:

Step-by-step explanation:

C(x) = 15x + 25,500....cost function

R(x) = 32x .....revenue function

break even point (when they are equal)....so set them equal and solve for x

15x + 25,500 = 32x

25,500 = 32x - 15x

25,500 = 17x

25,500 / 17 = x

1500 = x.......so the break even point is when 1500 benches are sold

15x + 25,500 = 32x =

15(1500) + 25,500 32(1500) =

22,500 + 25,500 48,000

48,000

and after selling 1500 benches, they will both equal $48,000

7 0

3 years ago

By hitting a target, Juanita can score 16, 17, 23, 26, 29 or 40 points with each arrow. What is the fewest arrows she can shoot

mezya [45]

Shoot two arrows worth 16 points each (32 points)

3 0

3 years ago