Answer:
probability that you and your 3 friends will be selected.
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
In this question, the order in which the volunteers are chosen is not important, which means that the combinations formula is used to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.

Desired outcomes:
You and the 3 friends(4 people), from a set of 4. So

Total outcomes:
20 people from a set of 20. So

Probability:

probability that you and your 3 friends will be selected.
Convert the decimal number to a fraction by placing the decimal number over a power of ten. Since there are
2
2
numbers to the right of the decimal point, place the decimal number over
10
2
10
2
(
100
)
(
100
)
. Next, add the whole number to the left of the decimal.
Answer:
Yes.
Explanation:
Rotational symmetry looks the same after some rotation by a partial turn.
The annual yield on Frances’s stock approximately will be 0.0758. Then the correct option is A.
<h3>What is Algebra?</h3>
Algebra is the study of mathematical symbols and the rule involves manipulating these mathematical symbols.
Frances bought 144 shares of Dwyn horticulture for $7.73 apiece. her broker charged her a commission of $46.15 for the purchase.
Then the total amount spent by the company will be
→ 144 × $7.73 + $46.15 = $ 1159.27
If the yearly dividend on Dwyn horticulture is 61 cents per share, then the annual yield on Frances’s stock will be

More about the Algebra link is given below.
brainly.com/question/953809
Answer:
Answer is 79 and 28
Step-by-step explanation:
Let two numbers be x and y.
x + y = 107. --> 1
x - y = 51 -->2
solving above equations,
2x = 158
x =79
y = 28