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Digiron [165]
3 years ago
11

Why does the number 17 not belong with 26, 44, & 65

Mathematics
1 answer:
kkurt [141]3 years ago
7 0

17 is a prime number whereas 26,44 and 65 are the composite numbers.

<u>Step-by-step explanation:</u>

The number 17 does not belong with 26, 44 and 65.

Here 26 is divisible by 2 and 13.

44 is divisible by 2, 4 and 11.

65 is divisible by 5 and 13

But 17 is divisible by 1 and itself, that is it's a prime number, whereas the other numbers 26, 44 and 65 is divided by 1, itself and also by other numbers.

So 17 is a prime number whereas the 65, 26 and 44 are composite numbers.

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5 pounds of apples cost $12. How many pounds of apples can you buy for $1.
Diano4ka-milaya [45]

Answer:

5/12 or 0.41666667 pound

Step-by-step explanation:

Set up the equation as 5/12=x/1 and cross multiply. Then you will get 12x=5. Divide both sides by 12 and then you will get 5/12.

4 0
3 years ago
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An ellipse is represented by the equation <img src="https://tex.z-dn.net/?f=%5Cfrac%7B%28y-3%29%5E%7B2%7D%20%7D%7B169%20%7D%20%2
padilas [110]

Answer:

  C.  horizontal line that is 33.8 units

Step-by-step explanation:

We assume your equation should be ...

  \dfrac{(y-3)^2}{169}+\dfrac{(x+6)^2}{144}=1

The largest denominator in this standard-form equation of an ellipse is under the y-term, so the major axis is vertical. The directrix will be a horizontal line.

The distance from the center to the directrix is always longer than the semi-major axis, so will be more than √169 = 13. This only leaves choice C.

__

If "c" is the center-to-focus distance, it will be the root of the difference of the denominators in the equation:

  c = √(169 -144) = 5

For semi-major axis "a", the distance from the center to the directrix is ...

  a²/c = (13²)/5 = 33.8 . . . . . matches choice C

5 0
3 years ago
What is the net decimal equivalent of the series 30/25/15. round to the nearest thousandths?
Brut [27]
<span>We can determine, a 30/25/15 series trade discount would be calculated as follows:

let X = retail price.

X - 0.30 </span>× X = Y    ⇒ first discounted price.
<span>
Y - 0.25 </span>× Y = Z    ⇒ second discounted price.
<span>
Z - 0.15*Z = T        </span>⇒ total discounted price.
<span>
X - 0.30 </span>× X = (1 - 0.30) × X = 0.70 × X = Y
<span>
Y - 0.25 </span>× Y = (1 - 0.25) × Y = 0.75 × Y = Z
<span>
Z - 0.15 </span>× Z  = (1 - 0.15) × Z  = 0.85 × Z = T
<span>
since Z = 0.85 </span>× Y, then 0.85 × Z = 0.85 × 0.75 × Y
<span>
since Y = 0.70 </span>× X, then 0.85 × Z = 0.85 × 0.75 × 0.70 × X
<span>
based on the above, then T = total discount


                                               = 0.85 </span>× 0.75 × 0.70 × X


                                               = 0.44625X<span>

30/25/15 series discount is equivalent to a total discount of 44.625%
</span>
7 0
3 years ago
Gerry arrived at the bus stop x hours past noon. Dale arrived 4 hours later. Pat arrived at 5 P.M., x hours after Dale.
victus00 [196]

Answer:

<em>Gerry arrived at the bus station at 12:30 P.M.</em>

Step-by-step explanation:

From noon and 5:00 P.M. there are 5 hours.

Gerry, Dale, and Pat arrived at the bus stop within that interval, which means the sum of the times elapsed between their arrival times must be 5.

4 out of the 5 hours elapsed since Gerry and Dale's arrivals. This means there is only one hour left for twice x.

If twice x is one hour, then x is half an hour. Thus, the complete sequence of arrivals is:

Gerry arrived at the bus station at 12:30 P.M.

Dale arrived at the bus station at 4:30 P.M.

Pat arrived at the bus station at 5:00 P.M.

8 0
4 years ago
Antoine and Tess have a disagreement over how to compute a 15% gratuity on $46.00.
lana66690 [7]

Answer:

Step-by-step explanation:

6 0
3 years ago
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