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lord [1]
3 years ago
15

Factor the expression. 2x + 8

Mathematics
2 answers:
sp2606 [1]3 years ago
7 0
2(x+4) I believe is the answer
worty [1.4K]3 years ago
5 0

Answer: 2 ( x + 4 )

Step-by-step explanation:

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Yoko has scored 81 , 84 , 84 , 69 , and 76 on her previous five tests. What score does she need on her next test so that her ave
kkurt [141]
Took must make a 92 on the next test.
(81+84+84+69+76+x)/6=81
(394+x)/6=81
Multiply by 6 on both sides
394 + x = 486
Subtract 394 from both sides.
x= 92
7 0
3 years ago
Can some explain steps​
Mashutka [201]

Answer:

r = 3.

Step-by-step explanation:

16 = 10 + √(3r + 27)

√(3r + 27) = 6

Square both sides:

3r + 27 = 36

3r = 36 - 27 = 9

r = 3.

Check the result:

Left side of the equation = 16

Right side = 10 + √(9 + 27)

                  = 10 + √36 = 16

5 0
2 years ago
Read 2 more answers
Express 20 cm to 400 mm in simplest form
solong [7]

Answer:

Step-by-step explanation:

36/24 or 3/2

4 0
3 years ago
If 6 out of 30 people over the age of 100 are male, how many are female
RoseWind [281]
The remainder of the thirty once you remove the 6 who are male.
30-6=24..
5 0
3 years ago
Find the prime factorization of each number (please)<br><br>891<br>23<br>504<br>230
patriot [66]

Answer:

  • 891 = 3^4 · 11
  • 23 = 23
  • 504 = 2^3 · 3^2 · 7
  • 230 = 2 · 5 · 23

Step-by-step explanation:

23 is a prime number. That fact informs the factorization of 23 and 230.

The sums of digits of the other two numbers are multiples of 9, so each is divisible by 9 = 3^2. Dividing 9 from each number puts the result in the range where your familiarity with multiplication tables comes into play.

  891 = 9 · 99 = 9 · 9 · 11 = 3^4 · 11

___

  504 = 9 · 56 = 9 · 8 · 7 = 2^3 · 3^2 · 7

___

  230 = 10 · 23 = 2 · 5 · 23

_____

<em>Comment on divisibility rules</em>

Perhaps the easiest divisibility rule to remember is that a number is divisible by 9 if the sum of its digits is divisible by 9. That is also true for 3: if the sum of digits is divisible by 3, the number is divisible by 3. Another divisibility rule fall out from these: if an even number is divisible by 3, it is also divisible by 6. Of course any number ending in 0 or 5 is divisible by 5, and any number ending in 0 is divisible by 10.

Since 2, 3, and 5 are the first three primes, these rules can go a ways toward prime factorization if any of these primes are factors. That is, it can be helpful to remember these divisibility rules.

6 0
3 years ago
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