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alexira [117]
3 years ago
5

Factorize 81xsquared+180x+100

Mathematics
1 answer:
bekas [8.4K]3 years ago
5 0

Answer:

  • 81x²+180x+100
  • 9x²+180x+10²
  • using (a+b)²=a²+b²+2ab
  • 9x²+2(9x)(10)+10²
  • (9x+2)²=(9x+2)(9x+2)
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Help anyone on these 3 problems
Allisa [31]

Answer:

5) a) complementary

6) b) supplementary

7) c) vertical angles

Step-by-step explanation:

5)

The sum of the complementary angles = 90 degrees

According to the graph, both angles add up to 90 degrees

Answer: a) complementary

6)

Straight angle is equal 180 degrees

The sum of the supplementary angles = 180 degrees

Answer: b) supplementary

7)

Vertical Angles are the angles opposite each other when two lines cross. The vertical angles are congruent.

Answer: c) vertical angles

6 0
3 years ago
Read 2 more answers
A club has a total of $1,520.50 in its bank account. At a budget meeting they decide to set aside 0.28 times the total amount fo
Scilla [17]

To solve this problem, we know from the statement that Initially, the club has $ 152050 in its bank account.

To know the amount of money you want to reserve for the trip, multiply the initial amount by 0.28.

So, we have:

$ 1,520.50 * 0.28 = $ 425.74

Finally, the club will reserve $ 425.74 from its bank account to travel.

3 0
3 years ago
Read 2 more answers
Two different floor plans are being offered in a new housing development. Several prospective buyers from three different age gr
zepelin [54]

Answer:

0.677

Step-by-step explanation:Add up the values in the plan A column. There are 10+12+16 = 38 people who prefer plan A.

Add up the values in the "40-49" row to find that 16+8 = 24 people are ages 40 to 49.

We have 38+24-16 = 46 people who either prefer plan A, are aged 40-49, or fit both descriptions. I subtracted off 16 because those 16 people were counted twice when adding 38 and 24.

An alternative way to get this value of 46 is to add up everything that is in column1 or row 3 (or both). So that would get 10+12+16+8 = 46.

Now add up everything in the table to find out how many people were surveyed total. That would be 10+7+12+15+16+8 = 68 people overall.

The probability of someone liking plan A, or being age 40-49, or both is 46/68 = 0.6765 approximately. Rounding to 3 decimal places gives 0.677

3 0
3 years ago
If | x + 4 | = 1, what value(s) could x have?
dybincka [34]

Answer:

-5 and -3 could both work in this situation

Step-by-step explanation

-5 + 4 = -1

| -1 | = 1

-3 + 4 = 1

| 1 | = 1

7 0
3 years ago
Find the coordinate of X if XY=1 and the coordinate of Y is 0.
rosijanka [135]
X is undefined.

XY = 1

Plug in 0 for Y. X(0) = 1

X = 1/0

So the answer is that X is undefined.
3 0
3 years ago
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