1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
grandymaker [24]
3 years ago
14

Factor: x² – 3x+2 O A. (3-2)(x-1) O B. (x-2)(x+1) OC. (x+2)(x+1) OD. (x+2)(x-1)

Mathematics
1 answer:
VLD [36.1K]3 years ago
6 0
The answer be (x-2)((x-1)
You might be interested in
The Cobb family of Fremont is looking at ways to decrease their home water and energy usage. Their current electric hot-water he
OverLord2011 [107]

Answer:

  ai) 73000 gal/yr

  aii) $730 per year

  b) 1000 days

Step-by-step explanation:

ai) The water usage per day is ...

  (4 showers/day)(10 min/shower)(5 gal/min) = 200 gal/day

Then the usage per year is ...

 (200 gal/day)(365 days/yr) = 73,000 gal/yr

__

aii) The cost of electricity is the cost of heating half the water usage, so is ...

  (0.20 kWh/gal)(1/2)(73,000 gal/yr)($0.10/kWh) = $730/yr

__

b) The current daily cost of electricity for heating water is ...

  ($730/yr)/(365 days/yr) = $2/day

If the cost is cut in half, it will be $1 per day. That means the savings is $1 per day, so it will take 1000 days to recover the $1000 initial cost. (Effectively, the average cost for the first 1000 days is the same as if the water heater had not been replaced.)

5 0
3 years ago
Order these numbers from least to greatest. 2.23 , 2.208 , 2.3 , 2.1031
Sati [7]
2.1031,2.208,2.23,2.3
8 0
3 years ago
Read 2 more answers
there are n counters in a bag. 4 of the counters are red and the rest are blue. Ross takes a counter from the bag at random and
Ainat [17]

Answer: n = 10.

Step-by-step explanation:

In the bag, we have n counters.

4 of the counters are red.

the rest are blue, then we have:

(n - 4) blue counters.

Now, the probability that Ross takes a blue counter from the bag is equal to the quotient between the number of blue counters (n - 4) and the total number of counters, n

Then the probability is:

p1 = (n - 4)/n

Now he draws another, and it must be blue again, then we can calculate the probability in the same way as above, but he already take a blue counter, so the number of blue counters is (n - 5) and the total number of counters is (n - 1)

The probability of this event is:

p2 = (n - 5)/(n - 1)

The joint probability (the probability that Ross takes two blue counters) is equal to the product of the individual probabilities, and we know that this is equal to 1/3, then we have the equation:

1/3 = ( (n - 4)/n)*((n - 5)/(n - 1))

Now let's solve this for n.

n*(n - 1)/3 = (n - 4)*(n - 5)

(n^2 - n)/3 = n^2 - 4*n - 5*n + 20

n^2 - n = 3*(n^2 - 9*n + 20)

n^2 - n = 3*n^2 - 27*n + 60

0 = (3*n^2 - n^2) - 27*n + n + 60

0 = 2*n^2 - 26*n + 60

The two solutions of this equation can be found with Bhaskara's equation:

n = \frac{-(-26) +- \sqrt{(-26)^2 - 4*2*60} }{2*2} = \frac{26+- 14}{4}

Then the two solutions are:

n = (26 - 14)/4 = 3

This is not an option, because we know for sure that we have 4 red counters, then this option can be discarded.

The other solution is:

n = (26 + 14)/4 = 40/4 = 10

Then we have n = 10, 10 counters in total.

4 0
2 years ago
When you write a numerical expression, how can ypu show which operation to do first?
Scrat [10]

Answer:

using PEMDAS

Step-by-step explanation:

P   parenthesis

E  exponents

M multiplication

D division

A addition

S subtraction

6 0
3 years ago
Find the distance around each figure.Use 3.14 for pi.
telo118 [61]

Answer:

13.) 257.08

14.) 33.57

Step-by-step explanation:

Assume you mean the perimeter.

The circumference is 2\pir, then just add the extra measurements

5 0
2 years ago
Other questions:
  • Note: Figure is not drawn to scale. If m1 + m2 = 134°, what is m3? A. 138° B. 49° C. 46° D. 136°
    11·1 answer
  • 6. At a school supply store, the price of three
    11·2 answers
  • Graph y=4x please i need help
    5·1 answer
  • The key on a map shows 3/8th of an inch is 60 miles. If two cities are 4 5/8 inches apart, what is this value in miles?
    5·1 answer
  • for a recipe Peter uses 2 cups of sugar for every 3 cups of flour which table shows equivalent ratios for this table
    5·1 answer
  • GIVING BRAINLY TO CORRECT answer
    7·2 answers
  • Mark u brainliest and give 30 points.No random answers and pls give answers with explanation/steps or i will report u.​​
    7·1 answer
  • X * 3 &lt; 5 <br> solve for x
    12·1 answer
  • Please help!! best answer gets brainless ​
    13·1 answer
  • The number of visits to public libraries increased from 1.5 billion in 1991 to 1.7 billion in 1996. Find the average rate of cha
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!