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nadezda [96]
3 years ago
13

Find the area of the triangle

Mathematics
2 answers:
Nikolay [14]3 years ago
6 0
The answer is A. How I helped
Svetradugi [14.3K]3 years ago
4 0
A = LW

A = 28 × 7.1

A = 198.8

The correct answer is A.
You might be interested in
In a geometric sequence, a2=2, a3=16, and a4=128.
Oduvanchick [21]

Answer:

an = 1/4(8)^n-1

Step-by-step explanation:

Given the following in a geometric sequence, a2=2, a3=16, and a4=128.

nth term of a sequence = ar^n-1

a is the first term

r is the common ratio

r = a3/a2 = a4/a3

r = 16/2 = 128/16

r = 8

a2 = ar

2 = 8a

a = 2/8

a = 1/4

The nth term by substituting the parameters will be;

an = 1/4(8)^n-1

4 0
3 years ago
You are reading a book with with 48 pages. If you read the same number of pages every night for 12 days, how many pages will you
aalyn [17]

Answer:

4 pages per night

Step-by-step explanation:

you would do 48/12

4 0
3 years ago
Read 2 more answers
A snail moved 375 centimeters in 5 hours. How fast was the snail moving? Solve for speed.
ivann1987 [24]

Answer: 75 cm per hour

Step-by-step explanation:

375 divided by 5=75

8 0
3 years ago
Read 2 more answers
Whoever helps gets brainliest answer and 10 points :)
andrew11 [14]
I think 5?
These are the ages,

12, 12, 14, 15, 17,
28, 29,
40, 41, 44, 45,
50,
69

Only the people on the first row are under 19 and there are 5 people.
6 0
3 years ago
There are 10 employees in a particular division of a company. Their salaries have a mean of 570,000, a median of $55,000,and a s
harkovskaia [24]

Answer:

a) $160,000

b) $55,000

c) $332264.804

Step-by-step explanation:

We are given that there are 10 employees in a particular division of a company and their salaries have a mean of $70,000, a median of $55,000, and a standard deviation of $20,000.

And also the largest number on the list is $100,000 but By accident, this number is changed to $1,000,000.

a) Value of mean after the change in value is given by;

     Original Mean = $70,000

       \frac{\sum X}{n} = $70,000  ⇒ \sum X = 70,000 * 10 = $700,000

   New \sum X after change = $700,000 - $100,000 + $1,000,000 = $1600000

  Therefore, New mean = \frac{1600000}{10} = $160,000 .

b) Median will not get affected as median is the middle most value in the data set and since $1,000,000 is considered to be an outlier so median remain unchanged at $55,000 .

c) Original Variance = 20000^{2} i.e.  20000^{2} = \frac{\sum x^{2} - n*xbar }{n -1}

    Original \sum x^{2} = (20000^{2} * (10-1)) + (10 * 70,000) = $3,600,700,000

    New \sum x^{2} = $3,600,700,000 - 100,000^{2} + 1,000,000^{2} = 9.936007 * 10^{11}  

    New Variance = \frac{new\sum x^{2} - n*new xbar }{n -1} = \frac{9.936007 *10^{11}  - 10*160000 }{10 -1} = 1.103999 * 10^{11}    Therefore, standard deviation after change = \sqrt{1.103999 * 10^{11} } = $332264.804 .

7 0
3 years ago
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