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Andreas93 [3]
4 years ago
12

I don't know please help??

Mathematics
1 answer:
VikaD [51]4 years ago
8 0
2%
take the absolute value of  your (experimental-accepted then divide by the accepted) so (20-25)/25=.2
then multiply that number by 100 to get the percent, .2*100=2
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PLEASE HELP!! <br><br> express as a trinomial <br><br> (x-6) (2x-7)
Korolek [52]

Answer:

2x² - 19x + 42

Step-by-step explanation:

We want to expand (x - 6)(2x - 7) into a trinomial.

We use the FOIL (first, outer, inner, last) method.

First, multiply the first terms of each parenthetical expression; in the first one, that's x, and in the second, that's 2x:

x * 2x = 2x²

Next, multiply the outer terms; in the first one, that's x, and in the second, that's -7:

x * (-7) = -7x

After that, multiply the inner terms; in the first one, that's -6 and in the second, that's 2x:

(-6) * 2x = -12x

Finally, multiply the last terms; in the first one, that's -6 and in the second, that's -7:

(-6) * (-7) = 42

Now, add all these results together:

2x² + (-7x) + (-12x) + 42

2x² - 19x + 42

The answer is thus 2x² - 19x + 42.

<em>~ an aesthetics lover</em>

7 0
4 years ago
Read 2 more answers
A bridge hand is made up of 13 cards from a deck of 52. Find the probability that a hand chosen at random contains at least .
Tema [17]

Answer:

10%

Step-by-step explanation:

Since the question is not complete, I will be solving for probability of 3 9s

To solve this, we would be using the principle of combination, and thus

A deck of 52 hours has 4 nines, the probability that it contains at least 3 9s is mathematically represented by the equation.

P ( x ≥ 3 ) = ( 48 C 10 · 4 C 3 ) / ( 52 C 13 ) + ( 48 C 9 · 4 C 4 ) / ( 52 C 13 )

Remember I told us were going to be using the principle of combination. Well then

nCr = n!/r!(n - r)!

Now, applying the above stated formula to the equation, we have

48C10 = 48!/10!(38!)

4C3 = 4!/3!(1!)

52C13 = 52!/13!(39!)

48C9 = 48!/9!(39!)

4C4 = 4!/4!(0!)

Solving for each independently, we find that

= 0.0412 + 0.588 = 0.1

4 0
3 years ago
Find the solutions of :<br> -3X + 2 2 14<br> Give 5 solutions
pshichka [43]

Answer:

-3(x - 738)

Step-by-step explanation:

-3x+2214

-3x+3 . 738

-3(x-738)

5 0
3 years ago
Suppose the goal for mr. Luockwoods class had been 250 cans. Then 550 cans would have been what percent of the goal?
mr_godi [17]

Answer:

220%

Step-by-step explanation:

To find the percent divide the amout collected (550) by the goal (250)

550/250 = 2.2; convert to a %...220%

3 0
3 years ago
1. Albert bought a bicycle for $27 500. He sold it for $35 500.
lesantik [10]

35,500-27,500= 8000 meaning $8,000 is the profit and the percentage is %35

5 0
3 years ago
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