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3 years ago

D. 16 Geometry math question

Mathematics

2 answers:

nataly862011 [7]3 years ago

8 0

Make 2SM = RN.

2(3x - 4) = 9x - 20

Distribute 2 inside the parentheses.

6x - 8 = 9x - 20

Subtract 9x from both sides.

-3x - 8 = -20

Add 8 to both sides.

-3x = -12

Divide both sides by -3.

x = 4

NP = SM, so NP = 4.

A) 4

galina1969 [7]3 years ago

6 0

I think it might be A.

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2(x/8 + 3) = 7 + 1/4x what is x

malfutka [58]

Answer:

x1 = 2 - $\sqrt{5}$

x2= 2 + $\sqrt{5}$

Step-by-step explanation:

x/4 + 6 = 7 + 1/4x

(x^2 - 1)/4x = 1

x^2 - 1 = 4x

x^2 - 4x -1 = 0

x= (4+ $\sqrt{20}$ )/2 = 2 - $\sqrt{5}$

x= 2 + $\sqrt{5}$

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2 years ago

If A and B are independent events with P(A) = .5 and P(B) = .2, find the following:a) P(A U B)b) P(A^c ? B^c)c) P(A^c U B^c)**No

Effectus [21]

If A and B are independent, then $P(A\cap B)=P(A)P(B)$ .

$P(A\cup B)=P(A)+P(B)-P(A\cap B)=P(A)+P(B)-P(A)P(B)$

$P(A\cup B)=0.5+0.2-0.5\cdot0.2$

$\boxed{P(A\cup B)=0.6}$

b. I'm guessing the ? is supposed to stand for intersection. We can use DeMorgan's law for complements here:

$P(A^c\cap B^c)=P(A\cup B)^c=1-P(A\cup B)$

$P(A^c\cap B^c)=1-0.6$

$\boxed{P(A^c\cap B^c)=0.4}$

c. DeMorgan's law can be used here too:

$P(A^c\cup B^c)=P(A\cap B)^c=1-P(A\cap B)=1-P(A)P(B)$

$P(A^c\cup B^c)=1-0.5\cdot0.2$

$\boxed{P(A^c\cup B^c)=0.9}$

4 0

2 years ago

I need help on 2,5,9

USPshnik [31]

Answer:

2. -4/3

5. 128/105

9. -5/6

3 0

3 years ago

Answer right = get brainliest

saw5 [17]

Answer:

i believe u add all of them up

Step-by-step explanation:

3 0

3 years ago

Choices: One-sixth cups Five-sixths cups 1 and two-thirds cups 1 and 5 / 6 cups

navik [9.2K]

Answer:

Patel will require more orange juice = $\frac{371}{660}$ cups

Step-by-step explanation:

Patel needs the orange juice for his family = 3 cups

He needs more orange juice = 3 cups - Sum of juice squeezed from different oranges

$=3-(\frac{13}{15}+\frac{1}{5}+\frac{9}{20}+\frac{5}{11}+\frac{7}{15})$

L.C.M. of the denominators = 660

$=3-\frac{572+132+297+300+308}{660}$

$=3-\frac{1609}{660}$

= $\frac{1980-1609}{660}$

= $\frac{371}{660}$

Therefore, amount of orange juice required more = $\frac{371}{660}$ cups

3 0

3 years ago