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aleksley [76]
3 years ago
13

Carmen hiked at Yosemite national park for 1.25 hours. Her average speed was 3.9 miles per hour. How many miles did she hike? Gi

ve the exact answer- do not round!
Mathematics
1 answer:
timofeeve [1]3 years ago
8 0
1.25(3.9)=4.875

Carmen hiked 4.875 miles.

Hope this helps!
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The route used by a certain motorist in commuting to work contains two intersections with traffic signals. The probability that
tekilochka [14]

Answer:

a) P(X∩Y) = 0.2

b) P_1 = 0.16

c) P = 0.47

Step-by-step explanation:

Let's call X the event that the motorist must stop at the first signal and Y the event that the motorist must stop at the second signal.

So, P(X) = 0.36, P(Y) = 0.51 and P(X∪Y) = 0.67

Then, the probability P(X∩Y) that the motorist must stop at both signal can be calculated as:

P(X∩Y) = P(X) + P(Y) - P(X∪Y)

P(X∩Y) = 0.36 + 0.51 - 0.67

P(X∩Y) = 0.2

On the other hand, the probability P_1 that he must stop at the first signal but not at the second one can be calculated as:

P_1 = P(X) - P(X∩Y)

P_1 = 0.36 - 0.2 = 0.16

At the same way, the probability P_2 that he must stop at the second signal but not at the first one can be calculated as:

P_2 = P(Y) - P(X∩Y)

P_2 = 0.51 - 0.2 = 0.31

So, the probability that he must stop at exactly one signal is:

P = P_1+P_2\\P=0.16+0.31\\P=0.47

7 0
3 years ago
Find the degree of the following polynomial:<br> 7xy223 + 8y5 – 3x4 + 4
Vika [28.1K]

Answer:

224

Step-by-step explanation:

polynomial degree:224

leading term:7x^223

leading coefficient:7

8 0
3 years ago
How do you solve 42 divided by 63
Dafna1 [17]

42  ÷ 63

  63 -> 420

63x6=378


420-378=42

       63->420


So, how many times does 63 go into 42? Well, it doesn't. So put down a zero on your paper, and then a decimal. So if we add a zero onto 42, it becomes 420. Well, 420 is divisible by 63. In fact, 63 goes into 420 6 times, making a total of 378. 420-378 = 42. Then the process begins again. So you've got a 0.6, and that six just keeps on repeating. On paper, you're gonna wanna put a dash over the six to show that it's repeating.


Anyways, the answer is .66 repeating.

6 0
3 years ago
Read 2 more answers
Algebra 1 ) U. Checkpoint: Systems of equations and inequalities LOW
krek1111 [17]

Answer:algebra ok

Step-by-step explanation:

7 0
3 years ago
In a class of 30 students, 6 have a brother and 12 have a sister. There are 14 students who do not have any siblings. What is th
NeTakaya

Answer:

32 siblings from the class theres a possibility that some students had more siblings and not everyone has one

Step-by-step explanation:

.

6 0
3 years ago
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