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Rus_ich [418]
3 years ago
9

Find the area of the triangle. 13.9 km 20.6 km

Mathematics
2 answers:
Alisiya [41]3 years ago
8 0

Answer: 143.17

Step-by-step explanation: A = 1/2(l*w)

A = 1/2(286.34)

A = 143.17

snow_lady [41]3 years ago
6 0

Answer:

A≈143.17

Step-by-step explanation:

(happy to help)

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In a history class, students take a weekly multiple choice quiz consisting of 6 questions, each with 4 possible answers. if a st
Mademuasel [1]
There are 24 possible answers, 6 are correct answers and 18 are incorrect answers. By use of the hypergeometric distribution the probabilities of each possible number of randomly selected correct answers can be found, as follows:
P(0) = 0.1379, P(1) = 0.3819, P(2) = 0.341, P(3) = 0.1213, P(4) = 0.017, P(5) = 0.0008, P(6) = 0.000007.
The expected or mean number of correct answers is found from:
E(X)=0\times0.1379+1\times0.3819+2\times0.341+3\times0.1213+4\times0.017+5\times0.0008+6\times0.000007=1.4998
The answer is: 1.4998

8 0
2 years ago
In 2013, the Centers for Disease Control and Prevention surveyed 450,000 adults ages 18 and older and found that 79% of them do
belka [17]

Answer:

Percent = 79\%

Step-by-step explanation:

Given

Adults = 450000

Rate = 79\% --- Those that do not get recommended amount of exercise

Required

The percentage that do not get the recommended amount of exercise

From the question, we have 79% to be the percentage of adults that do not get the recommended amount of exercise. This 79% represents the required percentage

Hence:

Percent = 79\%

6 0
3 years ago
Need help fast please
dybincka [34]

Answer:

Step-by-step explanation:

(2, -1) & (-1, -2)

(-2+1)/(-1-2)= -1/-3= 1/3 is the slope of the line

6 0
2 years ago
When Jack started his job working for an industrial manufacturing company, he contributed $100
Anestetic [448]

Answer:

Problem 4 If the point (2, 2) is in the feasible set and the vertices of the feasible sct are (0,0), (0, 12). (6,18). (14, 16), and (18, 0), then determine the system of linear inequalities that created the feasible set. Show all the work that led you to you answer. (10 points) Problem 5 When Jack started his job working for an industrial manufacturing company, he contributed $100 at the end of each month into a savings account that earned 1.2 % interest compounded monthly for 8 years. At the end of the year, Jack was laid off. To help mect family expenses, Jack withdrew $285 from the savings account at the end of each month for 2 years. At the end of the second year of being unemployed, Jack found another job and started contributing $138 back into the savings account at the end of each month for the next six years. How much money would he have in the account at the end of the six years (after returning to work)? You may use the TVM Solver. Show all the necessary work that you need perform to arrive at the answer. (10 points)

Problem 5 When Jack started his job working for an industrial manufacturing company, he contributed $100 at the end of each month into a savings account that earned 1.2 % interest compounded monthly for 8 years. At the end of the 8th year, Jack was laid off. To help meet family expenses, Jack withdrew $285 from the savings account at the end of each month for 2 years. At the end of the second year of being unemployed, Jack found another job and started contributing $138 back into the savings account at the end of each month for the next six years. How much money would he have in the account at the end of the six years after returning to work)? You may use the TVM Solver. Show all the necessary work that you need perform to arrive at the answer. (10 points)

4 0
3 years ago
Solve -3x=2x^2-4 using quadratic formula
frozen [14]

Answer:

x=-2.35078, 0.850781

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

<u>Algebra I</u>

  • Standard Form: ax² + bx + c = 0
  • Quadratic Formula: x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}

Step-by-step explanation:

<u>Step 1: Define equation</u>

-3x = 2x² - 4

<u>Step 2: Rewrite into Standard Form</u>

0 = 2x² + 3x - 4

<u>Step 3: Define variables</u>

a = 2

b = 3

c = -4

<u>Step 4: Find </u><em><u>x</u></em>

  1. Substitute:                    x=\frac{-3\pm\sqrt{3^2-4(2)(-4)} }{2(2)}
  2. Evaluate:                       x=\frac{-3\pm\sqrt{9-4(2)(-4)} }{2(2)}
  3. Multiply:                        x=\frac{-3\pm\sqrt{9+32} }{4}
  4. Add:                              x=\frac{-3\pm\sqrt{41} }{4}
  5. Evaluate:                      x=\frac{-3\pm6.40312}{4}
  6. Evaluate:                      x=-2.35078, 0.850781

And we have our final answer!

6 0
2 years ago
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