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4 years ago

30 POINTS IF YOU ANSWER. WILL MARK BRAINLIEST!!! PLEASE ANSWER SOON

Mathematics

2 answers:

Ksenya-84 [330]4 years ago

7 0

Answer:

22 people

Step-by-step explanation:

Using the concept of a Venn Diagram, you place the 3 people in the intersection. Then, you subtract the three from both groups to keep the balance.

Since you said "or", you just add the entirety of the population.

$(16 - 3) + (9 - 3) + 3 = 22$

Natali [406]4 years ago

3 0

Answer:

Step-by-step explanation:

n(DUC) = n(C) + n(D) - n(C^D)

n(DUC) = 9 + 16 - 3 = 22

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Evaluate. (12−2)+12 plz help i am having issues

cestrela7 [59]

Well this is easy. FOIL will help later on. For now (12-2) equals 10. Then add 12 and you get 22.

Brainliest answer you will see.

7 0

3 years ago

Read 2 more answers

Tim took his friends to the movies. He stared with $40 and bought 3 movie tickets that each cost x dollars. He also bought one t

Ber [7]

C would the the correct answer since it is the only one that makes sense

8 0

3 years ago

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The area of a rectangular field is 48m2 and one of its sides is 6m . How long will a lady take to cross the field diagonally at

tatiyna

Answer:

It will take her approximately 28 seconds to cross the diagonal of the pitch

Step-by-step explanation:

If we can find the length of the diameter of the field (in Metres), we can easily find the time it takes her to cross this length using motion equations.

Step one: Find the length of the field from its area.

The field is rectangular in shape. The area of the field is 48m^2. To get the area of the field, we had to multiply its length and its breadth.

i.e area = length X breadth.

Let us assume that the breadth = 6m

its length will be area / breadth = 42/ 6 = 7m

The length of the pitch = 7 m

Step Two: Find the length of the diagonal using Pythagoras' theorem.

From Pythagoras'theorem, the length of the diagonal can be obtained by

$diagonal = \sqrt{l^2 +b^2}$

$diagonal = \sqrt{6^2+ 7^2} = 9.22m$

The length of the diagonal is 9.22m

Step three: Find the time using her speed and the distance she needs to cover.

Time = distance / speed

time = 9.22 /20 = 0.46 minutes

It will take her approximately 28 seconds to cross the diagonal of the pitch

6 0

3 years ago

4x^2-5x=0 Help me pls!!!!!

matrenka [14]

The answer to this is: x = 0, 5/4

8 0

3 years ago

A jar contains 100 marbles. There are 7 blue marbles, 4 green marbles,

iragen [17]

Answer:

43%

Step-by-step explanation:

If there are 43 yellow marbles out of 100 total, the fraction that will be used is 43/100. The percentage is found by dividing the numerator (top) by the denominator (bottom). The percentage is the first two numbers in the decimal. For future reference, if a decimal were to have more than 2 or 3 digits, the number would be rounded to the 4th and the decimal point would be placed between the 2nd and 3rd digits.

7 0

2 years ago