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victus00 [196]
3 years ago
6

Lol idk it won't let me send it unless I have 20 charachters

Mathematics
1 answer:
DIA [1.3K]3 years ago
6 0

The answer to your problem is -49.

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Simplify the expression 2√ 20 − 3√ 7 − 2√ 5 + 4√ 63 .
Kisachek [45]

Simplify √20 to 2√5

2 * 2√5 - 3√7 - 2√5 + 4√63

Simplify √63 to 3√7

2 * 2√5 - 3√7 - 2√5 + 4 * 3√7

Simplify 2 * 2√5 to 4√5

4√5 - 3√7 - 2√5 + 4 * 3√7

Simplify 4 * 3 √7 to 12√7

Collect like terms

(4√5 - 2√5) + (-3√7 + 12√7)

Simplify

2√5 + 9√7

Answer: B

3 0
3 years ago
Find the Lmc for the following numbers 76 96 120
Ghella [55]

Answer:

9120

Step-by-step explanation:

I'm assuming you mean LCM (Least Common Multiple).

Factor each number into powers of primes.

76 = 2²×19

96 = 2⁵×3

120 = 2³×3×5

Take the highest power of each prime used: 2⁵, 3, 5, 1

The LCM is their product:  2⁵×3×5×19 - 9120

7 0
3 years ago
What is the least common multiple of 18
Leno4ka [110]
2! is the lcm of eighteen
6 0
3 years ago
Read 2 more answers
Albert bought 9 pounds of fish at a grocery store at $5 per pound for salmon and $3 per pound for catfish. He spent a total of $
zalisa [80]

Answer:

5 pounds

Step-by-step explanation:

  • To find that we simply solve the system of equations
  • So make c the subject of the formula of equation 2
  • s+c=9\\c=9-s
  • Substitute in equation 1
  • 5s+3c=37\\5s+3(9-s)=37\\5s+27-3s=37\\5s-3s+27-(27)=37-(27)\\2s=10\\s=5 so that's 5 pounds of salmon
7 0
3 years ago
Hi there! please help with this.
USPshnik [31]

Answer:

Step-by-step explanation:

I dont know wish I could help, srry.

5 0
3 years ago
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