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olga55 [171]
3 years ago
5

what is the sum of the prime numbers of 420 do not repeat any prime factors A 15 B 16 C.17 D. 18 E. 19

Mathematics
1 answer:
Mars2501 [29]3 years ago
5 0

Answer:

C)

Step-by-step explanation:

Prime factorization of 420 = 2 × 2 × 3 × 5 × 7 = 22 × 3 × 5 × 7.

If you take...

2 + 2 + 3 + 5 + 7...

You would get 17.

Hope this helps! :) Good Luck!

<em>-kiniwih426</em>

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Brayden has a points card for a movie theater.
dedylja [7]
170 ≤ 75 + 12.5v (third one)
4 0
3 years ago
How far can she travel in 4 hours 53 minutes?
Vadim26 [7]

Step-by-step explanation:

1 hour she travels = 19 km

60 min = 1 hr

53 min = 1/60 * 53 hr = 53/60 hr

Now,

1 hr = 19 km

4 + 53/60 hrs = 19 * ( 4 + 53/60) km

She travels 92.78 km in 4 hrs and 53 minutes.

4 0
3 years ago
What's 17= z- (-9) days
Arte-miy333 [17]
Z - (-9) is the same as z + 9. Subtracting a negative is the same as adding.

Therefore 
17 = z - (-9)
is the same as
17 = z + 9

To get 'z' all by itself, we need to subtract 9 from both sides. We subtract 9 from both sides to undo the "plus 9" occurring to the 'z' on the right side.

17 = z + 9
17-9 = z + 9=9 ... subtracting 9 from both sides
8 = z
z = 8

So the answer is z = 8

---------------------------

Check:

17 = z - (-9)
17 = 8 - (-9) ... replace z with 8
17 = 8 + 9
17 = 17
Answer checks out


4 0
4 years ago
The pressure at sea level is 11 atmosphere and increases at a constant rate as depth increases. When Sydney dives to a depth of
Taya2010 [7]

Answer:

p(x) = 0.1x + 1

Step-by-step explanation:

Pressure at sea level = 1 atmosphere

Depth dove by Sydney = 23 meters

Pressure at a depth of 23 meters = 3.3 atmospheres

So,

Pressure at a depth of 23 meters = Pressure at sea level + k * Depth dove by Sydney

where k is  the diving rate constant

=> 3.3 = 1 + k(23)

=> 3.3 = 23k + 1

Subtracting 1 from both the sides, we get

3.3 - 1 = 23k + 1 -1

Cancelling out the +1 and -1 from the right side, we get

2.3 = 23k

=> 23k = 2.3

Dividing both sides by 23, we get

\frac{23k}{23} = \frac{2.3}{23}

Cancelling out the 23's from the top and bottom of the left side, we have

k = 0.1

Plugging in the value of k in the equation, we get

Pressure at a particular depth = Pressure at sea level + k * Depth dove by Sydney

p(x) = 1 + k(x)     [where p(x) is the pressure at a depth x]

=> p(x) = 1 + 0.1(x)

=> p(x) = 0.1x + 1

5 0
3 years ago
Solve for x. 2/5≤x−4
lilavasa [31]

Answer:

4.4 ≤ x

Step-by-step explanation:

2/5 ≤ x  -4

solve using inverse operations:

2/5 ≤ x - 4

0.4 ≤ x - 4

+4        +4

4.4 ≤ x

4 0
3 years ago
Read 2 more answers
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