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3 years ago

Pls help me this is dur in 10 minutes.

Mathematics

1 answer:

Alchen [17]3 years ago

6 0

Answer:

answer for the question is 1.point R means that the unit rate is $14.00 per pound

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Each hotdog cost $1.50 and sodas cost $.50. At the end of the day you made a total of $78.50.You sold a total of 87 hot dogs and

Maru [420]

Answer:

35 hotdogs and 52 sodas were sold.

Step-by-step explanation:

Create equations to represent the problem.

let "d" be the number of hotdogs sold

let "a" be the number of sodas sold

1.5d + 0.5a = 78.50 Equation for money made

d + a = 87 Equation for items sold

Rearrange d + a = 87 to isolate one of the variables.

a = 87 - d

Substitute a for 87-d into the other equation. Isolate using reverse operations.

1.5d + 0.5a = 78.50

1.5d + 0.5(87 - d) = 78.50 Distribute over brackets by multiplying

1.5d + 43.5 - 0.5d = 78.50 Collect like terms

43.5 + d = 78.50 1.5d - 0.5d is 1d. You don't need to write "1".

43.5 + d - 43.5 = 78.50 - 43.5 Isolate d, subtract 43.5 from both sides

d = 35 Number of hotdogs sold

Substitute d for 35 in the simpler equation

d + a = 87

35 + a = 87 Subtract 35 form both sides to isolate "a".

a = 87 - 35

a = 52 Number of sodas sold

Therefore 35 hotdogs and 52 sodas were sold.

4 0

4 years ago

A race car driver won a 300 mile race with a speed of 118.9 miles per hour. Find the driver's time,

Elan Coil [88]

2.59 hours i think xd

5 0

3 years ago

Complete the statement by filling in the blanks: When constructing a confidence interval, if the level of confidence increases,

Yuki888 [10]

Answer:

$\hat p \pm z_{\alpha/2} SE_{\hat p}$

And for this case the margin of error would be:

$ME= z_{\alpha/2} SE_{\hat p}$

If the level of confidence increase we can conclude that the value of $z_{\alpha/2}$ would increase and the the confidence interval would be wider, since the margin of error increase.

c. Increase; wider

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Solution to the problem

Let's assume that we have a parameter of interest $p$ and we want to estimate the value of p with $\hat p$ and in general the confidence interval if the distribution of p is normal is given by:

$\hat p \pm z_{\alpha/2} SE_{\hat p}$

And for this case the margin of error would be:

$ME= z_{\alpha/2} SE_{\hat p}$

If the level of confidence increase we can conclude that the value of $z_{\alpha/2}$ would increase and the the confidence interval would be wider, since the margin of error increase.

c. Increase; wider

8 0

3 years ago

Rational number, integer -5 What is the fraction?

Pavlova-9 [17]

Answer:

<h2>The answer would be negative five over one or -5/1 </h2>

8 0

3 years ago

Zach filled 581 one-liter bottles with apple cider. He distributed the bottles to 4 stores. Each store received the same number

butalik [34]

Answer:

a. 145 liter bottles (There were 2 bottles remaining)

Step-by-step explanation:

From this question, the total number of bottles that Zach had to fill with apple cider is 581.

He has to distribute these bottles to 4 stores after filling

The question says each store received same number of bottles.

To get the number of bottles received by each store, we divide 581 by 4

= 581 / 4

= 145.25

Therefore each store gets 145 bottles each and there would be a remainder of 2 bottles

8 0

3 years ago

Pls help me this is dur in 10 minutes.​

Pls help me this is dur in 10 minutes.