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Ede4ka [16]
3 years ago
6

Someone please help me understand how you expand and simplify brackets:(

Mathematics
1 answer:
tatiyna3 years ago
3 0
<h3>(3x-2)(2x²+x+5)</h3><h3>3x (2x²+x+5) -2 (2x²+x+5)</h3><h3>6x³+3x²+15x-4x²-2x-10</h3><h3>6x³+3x²-4x²+15x-2x-10</h3><h3>6x³-x²+13x-10</h3><h3>this is the answer may u like it and hope full it will be the correct</h3>

please mark this answer as brainlist

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What is the rational number equivalent to 3.24 repeating?
Lesechka [4]
3   24/99 is the mixed number
321/99 is the fraction
4 0
4 years ago
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Caleb needs to create an 8-digit password using only numbets. How many different passwords are there if he wants to use 00 exact
bulgar [2K]

Answer:7x9^6 = 3720087 and I know how your friend got it

Step-by-step explanation:

if Caleb can put 00 anywhere that means that since there are 8 digits and 00 is 2 digits that means there are 7 different spots to put 00 giving you 7*x or 7 times any value. Because the 00 takes up two spaces, that means that they're are 6 digits left. hence 7*x^6 or 7 times any value to the sixth. In a numerical password they're are nine different digits to count up "123456789". So your friend did the 7 digits to put 00 times the "123456789" to the remaining spaces power. or 7x9^6.

I hope this helped pls give brainliest.

4 0
3 years ago
Logan trades 50 pennies for nickels. He gets a nickel for each group of 5 pennies.
AlexFokin [52]
Answer: 50/5

Because 50 pennies and each nickel is 5 pennies
6 0
3 years ago
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You are dealt a hand of three​ cards, one at a time. Find the probability of each of the following. ​a) The first heart you get
boyakko [2]

Answer:

a) 0.145

b) 0.013

c) 0.783

d) 0.586

Step-by-step explanation:

a) there are always 52 cards in total, 13 hearts

Pa = 39/52 × 38/51 × 13/50 = 19266/132600 = 257/1700 =0.145

b) there are always 13 diamonds in a complete card

Pb = 13/52 × 12/51× 11/50 = 11/850 = 0.013

c) there are always 4 aces, and 48 that are not aces

Pc = 48/52 × 47/51 × 46/50 = 4324/5525 = 0.783

d) there are 13 hearts,to get at least one heart we have.

Pd = 1 - p

Where p is the probability of no hearts

p = 39/52 × 38/51 × 37/50 = 703/1700 = 0.414

Pd = 1 - 0.414

Pd = 0.586

4 0
4 years ago
You earn $100 plus 1/5 of your sales each week. What dollar amount of sales do you need this week to earn $600?
meriva

Answer:

You'll need $2,500 in sales this week to end up with $600 in income for the week.

Step-by-step explanation:

Let s represent the dollar amount of the total sales for the week.

The commission earned on such sales is 1/5, or 0.20, of s:

Commission:  0.20s

Then the correct expression for your weekly income is:

$100 + 0.20s = $600.

Solving for s, subtract $100 from both sides.  Then 0.20s = $500, and through division we get  s = $2,500.

You'll need $2,500 in sales this week to end up with $600 in income for the week.

8 0
3 years ago
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