A natural number greater than 1 that has only itself and 1 as factors is called alan
2 answers:
Answer:
A natural number greater than 1 that has only itself and 1 as factors is called a <u>prime</u> number
Step-by-step explanation:
- A prime number is a natural number greater than 1, that has only two factors;- the natural number itself and 1.
- Example:
- The factors of 13 are {1,13}, therefore 13 is a prime number.
- The factors of 2 are {1.2}, therefore 2 is also a prime number.
- Composite numbers have two or more factors.
- An exponential number is a power of natural numbers. An example is
- The first choice is correct
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The percentage error is 23%
Explanation:
The estimated total cost of the groceries = $50
The actual cost of the groceries = $65
To find the error value, we need to subtract the value of actual cost and total cost of the groceries.
Thus,
error value = actual cost - total cost
error value
Hence, error value = $15
The formula to determine the percent error is given by
Substituting the values in the formula, we get,
Rounding off the value, we have, 23%
Thus, the percentage error is 23%
Answer:
m∠PRT = 114°
m∠T = 37°
m∠RPT = 29°
Step-by-step explanation:
This question is incomplete (without a picture) ; here is the picture attached.
In this picture, an airplane is at an altitude 12000 feet.
When the plane is at the point P, pilot can observe two towns at R and T in front of plane.
We have to find the measure of ∠PRT, ∠T and ∠RPT.
Form the figure attached segment PS is parallel to RT and PR is a transverse.
We know that internal angles formed on one side of the parallel lines by a transverse are supplementary.
Therefore, x + 66 = 180
x = 180 - 66 = 114°
∠PRT = x = 114°
m∠RPT = m∠SPR - m∠SPT
= 66 - 37
= 29°
Since m∠PRT + m∠T + m∠RPT = 180°
114 + ∠T + 29 = 180
143 + ∠T = 180
∠T = 180 - 143
∠T = 37°
