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Bingel [31]
3 years ago
11

Can someone pls answer this question for me: 21+ y² + 1

Mathematics
1 answer:
asambeis [7]3 years ago
6 0
All you need to do is combine liked terms

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dybincka [34]
Y=-1/4x+3 should be the correct answer
7 0
3 years ago
What is the property of 22•1-22?
quester [9]

Answer:

here according to BODMAS

we first have to multiply then subtract

so 22×1=22

then 22-22=0

4 0
3 years ago
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Which of the following is not necessarily true for independent events A and B? P (A intersection B )equals P (A )P (B )P (A vert
Sauron [17]

Answer:

P(A U B)=P(A)+P(B)

Step-by-step explanation:

Reading the options that we have for the answer, one of them (the first one) is the definition of being independent. A and B are independent if and only if P(A ∩ B)=P(A)*P(B).

So the first one IS necessary true for independent events and with this equation, option two and three are necessary true for independent events:

For definition of P(A | B)

P(A | B)= P(A ∩ B) / P(B)

And we replace P(A ∩ B) using the first option that we know it´s true:

P(A | B)= P(A)*P(B) / P(B)= P(A)

So P(A | B)=P(A) it´s true for A and B independent.

The same process goes to show P(B | A)=P(B)

Because of this, the only one of the options that could not be true for independent events is P(A ∪ B)=P(A) + P(B), and this happens because P(A ∩ B)=P(A)*P(B) applies but it could be different from 0 considering P(A ∪ B)=P(A) + P(B) - P(A ∩ B). We conclude this property (P(A ∪ B)=P(A) + P(B)) is not necessary true for A and B independent.

6 0
3 years ago
GUYS ANYONE HERE I REALLY NEED HELP PLS! Find the area of the polygon with vertices D (-1, 2), E (2, 2), F (2, -1), and G (-3, -
katrin2010 [14]

Answer:

48 units

Step-by-step explanation:

1. graph

2. separate into a triangle and a square

3. the square is 6x6 squares, so 36 there

4. the triangle is 4x6, so (4x6)/2 is 12

5. 36+12 = 48 units

6 0
3 years ago
85% of what number is 68
Nataly [62]
Hi

85% ⇒ 68
100% ⇒ x

85x = 100·(68)
85x = 6800
x = 6800/85
x = 80

Answer: 80
6 0
3 years ago
Read 2 more answers
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