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Pie
3 years ago
15

Population in 2000 was 6.1 billion and increases at an annual rate of 1.4% estimate population in 2020

Mathematics
1 answer:
solong [7]3 years ago
6 0
I don't knowhhhhh hhhhhhhhh hhhhhhhh
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forty percent of participants in a math contest were boys. fifty percent of the boys revived medals. the number of boys who rece
aleksklad [387]

20% of the participants are girls and got a medal, and 33% of the girls got a medal.

<h3>What percent of the participants were girls who received medal?​</h3>

First, we know that 40% of the participants were boys, so the other 60% were girls.

We know that 50% of the boys got a medal, so the percentage (in decimal form) of participants that are boys and got a medal is:

P = (0.4)*(0.5) = 0.2

So, 20% of the participants are boys and got a medal.

We know that the number of girls that got a medal is the same as the number of boys, then we also have that 20% of the participants are women who got a medal.

Then if the percentage of girls that got a medal is x (in decimal form), we must have that:

Q = (0.6)*(x) = 0.2

      x = 0.2/0.6 = 0.33

x = 0.33

This means that 33% of the girls got a medal.

If you want to learn more about percentages:

brainly.com/question/843074

#SPJ1

3 0
2 years ago
Shayna had $22 to spend on six notebooks. After buying them she had $10. How much did each notebook cost ? solving equations: ap
bekas [8.4K]

Answer:

Each notebook costs $2

Step-by-step explanation:

We have to find the amount she spent on each notebook.

22-10=12

We know she spent $12 on six notebooks

We need to divide to find the answer

12/6=2

Each notebook costs $12

8 0
3 years ago
Read 2 more answers
What is 3/4 minus 3/8 in simplest form
Maslowich
Go to cymath and type it in and it will work it out for you and tell you the answer
3 0
4 years ago
Rewrite each of these statements so that negations appear only within predicates (that is, so that no negation is outside a quan
Ghella [55]

Answer:

Follows are the solution to the given point:

Step-by-step explanation:

In point a:

¬∃y∃xP (x, y)  

∀x∀y(>P(x,y))  

In point b:

¬∀x∃yP (x, y)

 ∃x∀y  ¬P(x,y)

In point c:

¬∃y(Q(y) ∧ ∀x¬R(x, y)) \equiv  ∀y(> Q(y) V ∀ ¬ (¬R(x,y)))

∀y(¬Q(Y)) V ∃xR(x,y) )

In point d:

¬∃y(∃xR(x, y) ∨ ∀xS(x, y))  

∀y(∀x>R(x,y)) \wedge ∃x>s(x,y))

In point e:

¬∃y(∀x∃zT (x, y, z) ∨ ∃x∀zU (x, y, z))

∀y(∃x ∀z)>T(x,y,z) \wedge ∀x ∃z> V (x,y,z))  

8 0
3 years ago
How to solve the problem 3.2d-4d=2.3d+3
Liula [17]
3.2d - 4d = 2.3d + 3...simplify by combining like terms
-0.8d = 2.3d + 3....subtract 2.3d from both sides
-0.8d - 2.3d = 3 ...simplify again
-3.1d = 3...divide both sides by -3.1
d = 3/ -3.1
d = - 0.97

or
3.2d - 4d = 2.3d + 3....multiply the equation by 10, gets rid of the decimals
32d - 40d = 23d + 30....subtract 23d from both sides
32d - 40d - 23d = 30....simplify
-31d = 30...divide by -31
d = -30/31
d = - 0.97
5 0
3 years ago
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