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3 years ago

14

Tiffany answered 87% of the questions on her math test correctly. There were 50 questions on the test. How many questions did ti

ffany answer correctly?

1 answer:

laiz [17]3 years ago

3 0

Answer:

Step-by-step explanation:

Change 87% to its decimal form: .87

Take 50 and multiply it by .87

43.5 is the answer (if you have to round it is 44)

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A rectangle has a perimeter of 204 feet. It's length is six feet longer than twice it's width. If L stands for the length of the

Ratling [72]

Answer:

L = 70

W = 32

Step-by-step explanation:

P = 2L + 2W

P 204 feet

W = x

L = 2x + 6

P = 2L + 2W

P = 2*(2x + 6) + 2*x

P = 4x + 12 + 2x

P = 6x + 12

But we know that P = 204 So 6x + 12 = 204

6x + 12 = 204 Subtract 12 from both sides

6x + 12 - 12 = 204 - 12 Collect like terms on the right

6x = 192 Divide by 6

x = 192/6

x = 32

Answer

W = 32

L = 2*W + 6

L = 2*32 + 6

L = 64 + 6

L = 70

7 0

3 years ago

The table shows data from a survey about the number of times families eat at restaurants during a week. The families are either

kompoz [17]

The Rome data center is best described by the mean. The New York data center is best described by the median. The third option C is correct.

<h3>The Mean and Median:</h3>

The mean of a data set is the average of all the terms in the data set. The median of a data set is the value of the midpoint term in the frequency distribution.

From the given information, the table can be better expressed as:

High Low Q1 Q3 IQR Median Mean σ

Rome 18 1 3 7 4 6.5 6.4 4.3

NY 14 1 4.5 8.5 4 5.5 6.1 3.2

From the data sets in the table, the distribution for Rome is not largely diverse, and there isn't much departure from the mean value. It indicates that in the data set of Rome families, no outliers have occurred.

In New York, the data indicate a distinct outlier for New York families in Q3. This is due to the fact that the gap is so large, the mean may not be a good choice for determining the measure of the central tendency.

Therefore, we can conclude that, the Rome data center is best described by the mean and the median will be utilized to determine the central tendency in New York.

Learn more about mean and median here:

brainly.com/question/14532771

4 0

2 years ago

Create an equivalent expression by simplifying the expression below.

BabaBlast [244]

Answer:

see explanation

Step-by-step explanation:

Given

- $\frac{1}{2}$ [ - $\frac{3}{2}$ c + 6c + 1 ] - 3c

Distribute the square bracket by - $\frac{1}{2}$

= $\frac{3}{4}$ c - 3c - $\frac{1}{2}$ - 3c ← combine like terms

= $\frac{3}{4}$ c - 6c - $\frac{1}{2}$

= $\frac{3}{4}$ c - $\frac{24}{4}$ c - $\frac{1}{2}$

= - $\frac{21}{4}$ c - $\frac{1}{2}$

6 0

2 years ago

At Brighton Middle School, Mr. Yule asked 50 randomly selected students from each grade level about their favorite subject, and

Ugo [173]

Answer:

Yes, he made a reasonable inference by saying about 25 percent of students choose the science.

Step-by-step explanation:

Given that

Number of students for survey = 50

Number of students who choose science = 12

Now

Percentage of student who choose science = $\frac{12}{50} x 100$

Percentage of student who choose science = $\frac{12*100}{50}$

Percentage of student who choose science = 24 %

Now as Mr. Yule said "about 25" percent of students choose the science it can be treated as reasonable approximation.

Now if the number of students in survey become 200, then we can expect 12 out of every 50 students would choose the science. So, in total 48 students would choose the science.

Now lets calculate the percentage of students who choose science.

Percentage of student who choose science = $\frac{48}{200} x 100$

Percentage of student who choose science = $\frac{48*100}{200}$

Percentage of student who choose science = 24 %

7 0

3 years ago

Read 2 more answers

Write the equation in standard form for the hyperbola with vertices (-8,0) and (8,0), and foci (-10,0) and (10,0).

Sloan [31]

Answer:x56-8

Step-by-step explanation:

4 0

3 years ago