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2 years ago

7

Sally was able to drive

1 answer:

aliina [53]2 years ago

6 0

Remark
Average in this case does not mean you take (s1 + s2)/2. What average speed means is Total Distance / Total Time.

Formula
Average speed(s) = Total Distance / Total Time

Givens
Total Distance = 252 + 30 = 282 miles
Total Time = 5 hours.

Substitute and Solve
Average speed = 282 / 5
Average speed = 56.4 miles / hour <<<<< Answer.

The other facts are not used.

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Ok find the value of two numbers if their sum is 70 and their difference is 36 what the answer

cluponka [151]

58 and 22 is the answer.

8 0

3 years ago

Mandi learned that each 10% of charge on her cell phone gave her an hour and twenty minutes of use. While playing a game today o

Sonja [21]

Answer:

3hrs 12 mins

Step-by-step explanation:

For every 10% charge she gets 1hr 20mins (or 80 mins)

Charge drop = (81% - 57%) = 24%

Since 10% gives 80 mins;

24% gives (24/10) x 80 mins = 192 mins

since 1hr = 60 mins

192 mins = 192/60 = 3hrs 12 mins

3 0

3 years ago

Solve 1/4 n + 7 = 10 what n= ?

iVinArrow [24]

N=12

1/4n = 10-7
1/4n = 3
N = 3x4 = 12

6 0

2 years ago

Read 2 more answers

Two sides of a triangle measure 10 inches and 10.9 inches. The included angle between these sides is 65°. What is the approximat

fenix001 [56]

Answer:

9.9inches

Step-by-step explanation:

From the attachment, the opposite side is debited as "x" while the Hypotenuse is 10.9inches, we can find the third side by using trigonometry

From trigonometry, Sin(x)= opposite/Hypotenuse

Sin(65)=X/10.9

X= Sin(65) ×10.9

X=0.9063×10.9

=9.8688

Hence the third side of the triangle is approximately 9.9inches

CHECK THE ATTACHMENT FOR THE TRIANGLE

6 0

3 years ago

Maria will take two books with her on a trip. Suppose that the probability that she will like book 1 is .6, the probabilitythats

morpeh [17]

Answer:

0.25 is the required probability.

Step-by-step explanation:

We are given the following in the question:

Probability that like book 1 = 0.6

$P(1) = 0.6$

Probability that like book 2 = 0.5

$P(2) = 0.5$

Probability that Maria likes both the books = 0.4

$P(1\cap 2) = 0.4$

We have to find the conditional probability that she will like book 2 given that she did not like book 1.

Thus, we have to evaluate:

$P(2|1') = \dfrac{P(2\cap 1')}{P(1')} = \dfrac{P(2)-P(1\cap 2)}{1-P(1)}\\\\P(2|1') =\dfrac{0.5-0.4}{1-0.6} = 0.25$

0.25 is the conditional probability that Maria will like book 2 given that she did not like book 1.

4 0

3 years ago