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3 years ago

Can someone help me?

Mathematics

2 answers:

VLD [36.1K]3 years ago

5 0

Answer:

I would say 60$

Step-by-step explanation:

Because if Lin got 100% of her goal which was 40$ that means she got her 40$ dollars and each one is 10$ than Andre probably got 60$ dollars more but I am in 4th Grade so...

Norma-Jean [14]3 years ago

3 0

Answer:

$44

Step-by-step explanation:

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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

3 years ago

What fraction of an hour is 15 minutes?<br> Give your answer in its simplest form.

Salsk061 [2.6K]

Answer:

1/4

Step-by-step explanation:

15/60 = 1/4

8 0

2 years ago

Read 2 more answers

0.24 times 0.4<br> Equals

Komok [63]

That would be 0.24(0.4). First, estimate the result: 0.24 is about 1/4, and (1/4)(0.4) is about 0.1.

0.24(0.4) = 0.096 (which agrees with the estimated answer, 0.1).

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3 years ago

Read 2 more answers

Prove that is here<br><img src="https://tex.z-dn.net/?f=1%20-%20cos%20%7B2%7Da%20%5Cdiv%201%20-%20sin%20a%7B2%7D%20%20%3D%20tan%

garri49 [273]

$\\ \sf\longmapsto \dfrac{1-cos2A}{1-sin2A}$

$\boxed{\sf \dfrac{cosA}{sinA}=cotA}$

$\\ \sf\longmapsto \dfrac{1-cos2A}{1-sin2A}$

$\\ \sf\longmapsto 1-cot2A$

$\\ \sf\longmapsto 1-\dfrac{1}{tan2A}$

$\\ \sf\longmapsto \dfrac{tan2A-1}{tan2A}$

$\\ \sf\longmapsto tan2A$

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3 years ago

There are 5 buses, and each of these buses is taking 37 people to a game. Another bus is taking 9 people. How many people are th

Nina [5.8K]

Add 37 + 9 = 46

If thats not your answer theres more.

46 divided by 5 = 9.2

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3 years ago