Answer:
13.03
Step-by-step explanation:
7 x 7 = 49
11 x 11 = 121
121 + 49 = 170
The square root of 170 is 13.03
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Answer:
Explanation:
Distance and time are directly related, meaning that distance / time = constant.
In this case the constant is the rate or speed.
Thus you can write:
And, given that covering 30 miles requires 25 minutes, to calculate the time needed to cover 25 miles, you can set this proportion:
- 30 miles / 25 min = 25 miles / t
To clear t you do cross multiplication:
- t × 30 miles = 25 miles × 25 min
Divide both sides by 30 miles:
- t = 25 miles × 25 min / 30 miles = 20.8 min ≈ 21 min ← answer
Using it's concept, it is found that there is a 0.5 = 50% probability that one of the fair number cubes is a 1.
<h3>What is a probability?</h3>
A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.
The outcomes of the pair of cubes that result in a sum of 5 are as follows:
(1,4), (2,3), (3,2), (4,1).
Of those 4 outcomes, 2 involve a number 1, hence the probability is given by:
p = 2/4 = 0.5.
More can be learned about probabilities at brainly.com/question/14398287
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Answer:
y = -20
Step-by-step explanation:
Given that y varies directly with x it means changing x will also cause change in y
Mathematically it can be written as:
y∝x
Removing the proportionality symbol
y = kx
Given y=25 when x=5 Putting the values
Now
We have to find the value of y when x = -4
Putting x=-4
Hence,,
y = -20
Answer:
4
Step-by-step explanation:
