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Kryger [21]
3 years ago
12

Explain why 221 and 391 cannot be prime numbers

Mathematics
1 answer:
Scorpion4ik [409]3 years ago
6 0

Answer:

because the product of a two non-necessarily distinct prime numbers

Step-by-step explanation:

would have been required that 221 has only two divisors. i.e., itself and 1. However, 221 is a semiprime (also called biprime or 2-almost-prime)

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Will award brainliest to correct answer!
Artyom0805 [142]

Let's begin noting that a triangle is isosceles if and only if two of its angles are congruent. We can thus find the angle <ABP, recalling that the sum of the interior angles of a triangle is equal to 180°.

\angle \: ABP =  \frac{180 - 80}{2}  = 50 \degree

Finally, let point K be the intersection between segments BC and PQ, and let's note that the triangle PQB is a right isosceles triangle, since all the angles in a square are equal to 90°, and the two triangles APB and BQC are congruent.

Therefore, the angle BKQ is equal to 180-50-45=85°.

Of course angle BKP=180-85=95°.

Hope this helps :)

6 0
3 years ago
a trucking company shipped a total 151,375 boxes of fruit across the company. How many thousands of boxes of fruit were shipped?
Ostrovityanka [42]

Answer:

The trucking company shipped a total of 151 thousands of boxes of fruits

Step-by-step explanation:

Total boxes of fruits shipped= 151,375

How many thousands of boxes of fruit were shipped?

To find the thousands of boxes of fruits shipped, divide the total number of boxes of fruits shipped by 1000

That is

151,375 / 1000

= 151.375

Therefore, the trucking company shipped a total of 151 thousands of boxes of fruits

151,375

Place value of each figure from right to left

5= one

7= tens

3= hundred

1= thousand

5= ten thousand

1= hundred thousand

4 0
4 years ago
Lucy had 12.5 pounds of candy. Lisa had 5 6/14 pounds less than Lucy. How much candy did Lucy have?
kirill115 [55]

Lucy has 12.5 pounds, Lisa has 7 1/14 pounds

3 0
3 years ago
Read 2 more answers
7.suppose you have a 6-sided number cube and a coin. Event A is that you roll the number cube and land on 1, and event B is that
kykrilka [37]
Event A - roll a 6-number cube 
Event B - flip a coin

*Independent events    *not mutually exclusive events

Both events are independent and not mutually exclusive.
Independent event means that one can happen without relying on the outcome of the other one.
Not mutually exclusive event means that both can happen at the same time.  
4 0
3 years ago
Read 2 more answers
Given f(x) = 10 -2xfind f(7). –4 3 7 56
strojnjashka [21]

Answer: f(7)=-4

Step-by-step explanation:

1. You have the following function given in  the problem:

f(x)=10-2x

2. Then, to find f(7) asked in the exercise, you only need to substitute x=7 (which is the input value) into the given function.

3. Therefore, keeping the above on mind, you obtain that f(7) is:

x=7

f(7)=10-2(7)

f(7)=10-14

f(7)=-4

3 0
3 years ago
Read 2 more answers
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