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Akimi4 [234]
2 years ago
10

Help me please!!!!d. car a was 45 miles east of car b.​

Mathematics
1 answer:
Rudik [331]2 years ago
4 0

Answer:

B

Step-by-step explanation

Car A started 10 miles east of Johnstown based on the fact he traveled 90 miles in 2 hours but was 100 away from Johnstown

Car B started 20 miles away, so that mean Car B was 10 more miles east than Car A when they started.

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What is the probability of flipping a coin 10 times and getting tails 7 times ? Round your answer to the nearest tenth of a perc
KatRina [158]

Answer:

Option C: 11.7%

Step-by-step explanation:

The number of elements in sample space when a coin is flipped 10 times will be:

n(S) = 2^{10} \\= 1024

Let A be the event that the tails appear 7 times:

Then,

C_{(n,k)}=\frac{n!}{(k!)(n-k)!} \\where\\n=population\\k=picks\\In our case, k =7\\and\\n=10\\C_{(10,7)}= \frac{10!}{(7!)(10-3)!}\\= 120\\So, \\P(A) = \frac{n(A)}{n(S)} \\P(A) = \frac{120}{1024} \\= 0.1171\\

Converting into percentage:

P(A) = 0.1171*100=11.7%

So, option C is correct ..

6 0
3 years ago
X^3-10x=100
san4es73 [151]

Answer:

Step-by-step explanation:

6 0
3 years ago
Find the new amount. explain <br><br><br>200 books; 75% decrease <br><br>160 bananas; 20% decrease
prohojiy [21]

Answer:

75% of 200 = 50; 20% of 160 = 128

Step-by-step explanation:

200 (0.75) = 150

200 - 150 = 50

160 (0.20) = 32

160 - 32 = 128

8 0
3 years ago
Pleaseeeeee helppppp, ill give you brainley i promise
Dima020 [189]
Its the third one for the answer
8 0
3 years ago
Need help 10 points
Citrus2011 [14]

Answer:

50.24

Step-by-step explanation:

8 is the radius of the circle, so using A=πr^2, the equation would be A=(3.14*8^2)/4

(Dividing by 4 because we are solving for 1/4 of a circle, and substituting pi for 3.14)

(3.14*8^2)=200.96

200.96/4=50.24

3 0
2 years ago
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