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yuradex [85]
3 years ago
13

Find the size of angle a

Mathematics
1 answer:
ozzi3 years ago
6 0

Answer:

36 degrees

Step-by-step explanation:

4a+3a+2a+a=360

10a=360

A=36

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Trucks in a delivery fleet travel a mean of 100 miles per day with a standard deviation of 37 miles per day. The mileage per day
timama [110]

Answer: the probability that a truck drives between 166 and 177 miles in a day is 0.0187

Step-by-step explanation:

Since mileage of trucks per day is distributed normally, we would apply the formula for normal distribution which is expressed as

z = (x - µ)/σ

Where

x = mileage of truck

µ = mean mileage

σ = standard deviation

From the information given,

µ = 100 miles per day

σ = 37 miles miles per day

The probability that a truck drives between 166 and 177 miles in a day is expressed as

P(166 ≤ x ≤ 177)

For x = 166

z = (166 - 100)/37 = 1.78

Looking at the normal distribution table, the probability corresponding to the z score is 0.9625

For x = 177

z = (177 - 100)/37 = 2.08

Looking at the normal distribution table, the probability corresponding to the z score is 0.9812

Therefore,

P(166 ≤ x ≤ 177) = 0.9812 - 0.9625 = 0.0187

5 0
3 years ago
How to calculate reverse percentages using words: Value, Total Value and percentage?
Nimfa-mama [501]
<em>Here, I'll show you simple steps.
As we know, Percentage=(value</em>
×<em>100)/total value

</em>
<em>So, to get reversed the main value from given percentage and total value.
</em>
<em></em>∴Value×100=Percentage×total value
∴Value = (Percentage×total value)/100
3 0
3 years ago
Fred flips a coin, spins the spinner, and rolls a standard number cube. Find the probability that the coin will show tails, the
-BARSIC- [3]

Answer:

1/12

Step-by-step explanation:

Let us begin by identifying all sample spaces

Sample space for coin =2

Sample space for spinner = 2

Sample space for die= 6

Total sample space S= 10

1. Probability that the coin will show tails, is = 1/2

2. Probability that the spinner will land on yellow or green, is

=1/2+1/2= 1

3. Probability that the cube will

show a three.= 1/6

Hence for this event that Fred carried out the probability is

1/2*1*1/6= 1/12

8 0
3 years ago
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Match the expression with its name 9x^4-3x+4
Vanyuwa [196]
This expression is in the form of a quadratic
6 0
3 years ago
PLEASE HELP!!!
-BARSIC- [3]
Y=2/3x+7 would be slope intercept form
4 0
4 years ago
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