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guajiro [1.7K]
3 years ago
12

Why three prime numbers equal 30

Mathematics
2 answers:
Anna71 [15]3 years ago
7 0
30 is not a prime number, and there is no other number besides 30 that is equal to 30 .
lesya692 [45]3 years ago
7 0
3 × 2 × 5 = 30. All three of those numbers only have two factors, which is the definition of a prime number. <span />
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Daniel scored 3 points or 20% of his average points last game. What is his average point total?
Alex73 [517]

Answer:

15

Step-by-step explanation:

The statement indicates that Daniel scored 3 points which represents 20% of his average points and from this information, you can use the rule of three to find his average point total which is the 100%:

3 points → 20%

     x      ←  100%

x= (3*100)/20

x= 15

Daniel's average point total is 15.

4 0
2 years ago
Read 2 more answers
Carlos walk to school on the 14th of 20 days in February which value is equivalent to the fraction of school days in February th
Lady bird [3.3K]

Answer:

\dfrac{7}{10}

Step-by-step explanation:

Given that,

Carlos walk to school on the 14th of 20 days in February.

We need to find the equivalent to the fraction of school days in February that Carlos walk to school.

Required percentage is given by :

\%=\dfrac{14}{20}\times 100\\\\=14\times 5\\\\=70\%

or

=\dfrac{7}{10}

So, the required fraction is equal to \dfrac{7}{10}.

6 0
2 years ago
X/5 - 12 = -8 x=? what​
lutik1710 [3]
X = 20

If you multiply both sides by 5 to get rid of the fraction ( x - 60 = -40 ) the answer would become clear.
4 0
3 years ago
Consider the given right triangle. If angle B = 43 degrees and c = 26.7 meters, find a.
Nady [450]

Answer: Side a equals 19.5 metres

Step-by-step explanation: Consider the right angled triangle as shown in the picture attached. The triangle has been drawn with angle measuring 43 degrees, side c (line AB) measuring 26.7 m and side a (line CB) is yet unknown.

A right angled triangle can be solved if at least one side and an angle are available. In this question we shall apply the trigonometric ratios since we have one angle which shall be the reference angle (43°). Also we have an hypotenuse (the side facing the right angle) and an unknown side which is the adjacent (which lies between the right angle and the reference angle).

Cos B = Adjacent/Hypotenuse

Cos 43 = a/26.7

Cos 43 x 26.7 = a

0.7314 x 26.7 = a

19.52714 = a

a ≈ 19.5  (rounded to the nearest tenth)

Therefore the length of side a equals 19.5 metres.

3 0
3 years ago
Read 2 more answers
A coin sorting machine can sort a certain number of coins in 15 min a second machine can sort the same number of coins in 30 min
padilas [110]

Answer:

10 minutes

Step-by-step explanation:

Let's use the variable x for the amount of coins.

The first machine can sort x coins in 15 minutes, so its speed is x/15 coins/minute.

The second machine can sort x coins in 30 minutes, so its speed is x/30 coins/minute.

If we sum the speeds, we have that the speed will be:

speed = (x/15) + (x/30) = (2x + x)/30 = 3x/30 = x/10

The total speed can sort x/10 coins per minute, that is x coins in 10 minutes.

7 0
3 years ago
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