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Studentka2010 [4]
3 years ago
12

The restaurant served 220 sandwiches, 120tacos, and 160 salads for lunch. What is the ratio of salads to total number of lunches

sold? * 5 points 5 to 11 8 to 25 6 to 8
Mathematics
1 answer:
sladkih [1.3K]3 years ago
3 0

Answer:

8 to 25

Step-by-step explanation:

The total number of lunches sold i

220+120+160 =500

We want the ratio of salads to total lunches

salads: lunches

160:    500

Divide each side by 20

160/20 : 500/20

8:25

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S_A_V [24]
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3 years ago
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Out of 200 people sampled, 52 had kids. Based on this, construct a 99% confidence interval for the true population proportion of
iragen [17]

Answer:

0.180144 < p < 0.339856

Step-by-step explanation:

According to the Question,

  • Given That, Out of 200 people sampled, 52 had kids, Thus the proportion of the mean is 52/200 = 0.26

⇒ standard error of the sample is square root(0.26 * (1-0.26) / 200) = 0.031

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⇒assuming a normal distribution, look for the z-score associated with 0.995 cumulative probability , z-score = 2.576

⇒margin of error(ME) = 2.576 * 0.031 = 0.079856

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3 0
3 years ago
For the function: f(x) = 21 + 2x − 5x2<br> Find f(3)
allochka39001 [22]
F(3)=-18

You just replace x for three for your equation and then use Ofer of operations to solve it.

So f(3)= 21+ 2(3)-5(3)^2

The exponent goes first: f(3)= 21+ 2(3)-5(9)

Next is multiplication: f(3)= 21+ 6-45

Now add: f(3)= 27-45

Finally subtract: f(3)= -18

Hope this helps!
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Answer:

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Step-by-step explanation:

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Nonamiya [84]

Answer:

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B.

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D.

9

Step-by-step explanation:

5 0
3 years ago
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