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Natasha2012 [34]
3 years ago
14

M. Score: 0 of 1 pt

Mathematics
1 answer:
beks73 [17]3 years ago
5 0

Answer:

  3×5×53

Step-by-step explanation:

You can use divisibility rules to find the small prime factors.

The number ends in 5, so is divisible by 5.

  795/5 = 159

The sum of digits is 1+5+9 = 15; 1+5 = 6, a number divisible by 3, so 3 is a factor.

  159/3 = 53 . . . . . a prime number,* so we're done.

795 = 3×5×53

_____

* If this were not prime, it would be divisible by a prime less than its square root. √53 ≈ 7.3. We know it is not divisible by 2, 3, or 5. We also know the closest multiples of 7 are 49 and 56, so it is not divisible by 7. Hence 53 is prime.

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algol13

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5 0
1 year ago
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Need an answer for both plez.
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Answer:

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8x - 3 = 2x + 9

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3 years ago
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7 0
2 years ago
X + 2y = –6<br> 3x + 8y = –20
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What do you want to calculate?

CALCULATE IT!
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Problem:
Solve
x
+
2
y
=
−
6
;
3
x
+
8
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=
−
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x
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2
y
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6
;
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x
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20
Step: Solve
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for x:
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y
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2
y
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6
+
−
2
y
(Add -2y to both sides)
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y
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6
Step: Substitute
−
2
y
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6
for
x
in
3
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:
3
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)
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2
y
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18
+
18
=
−
20
+
18
(Add 18 to both sides)
2
y
=
−
2
2
y
2
=
−
2
2
(Divide both sides by 2)
y
=
−
1
Step: Substitute
−
1
for
y
in
x
=
−
2
y
−
6
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x
=
−
2
y
−
6
x
=
(
−
2
)
(
−
1
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