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
klemol [59]
3 years ago
5

7x^2-2x+1-(9x^2+2x-1)

Mathematics
2 answers:
likoan [24]3 years ago
6 0

Answer:

-2x^2-4x+2

Step-by-step explanation:

(7x^2-2x+1)-(9x^2+2x-1)=\\(7x^2-9x^2)+(-2x-2x)+(1+1)=\\-2x^2-4x+2

Hope this helps!

zalisa [80]3 years ago
6 0
(7x2-2x-1)+(9x2-4x+5)-(4x2+6x-7)

Final result :

12x2 - 12x + 11
Step by step solution :

Step 1 :

Equation at the end of step 1 :

((((7•(x2))-2x)-1)+(((9•(x2))-4x)+5))-((22x2+6x)-7)
Step 2 :

Equation at the end of step 2 :

((((7•(x2))-2x)-1)+((32x2-4x)+5))-(4x2+6x-7)
Step 3 :

Equation at the end of step 3 :

(((7x2-2x)-1)+(9x2-4x+5))-(4x2+6x-7)
Step 4 :

Trying to factor by splitting the middle term

4.1 Factoring 12x2-12x+11
You might be interested in
I need help with this problem please.
Thepotemich [5.8K]
6, 6, 3, 3, and 3

63,363
36,336

I just kept switching around the numbers till the sixes were separated by a factor of 1,000. This means that if the 6 is in a place, that if you multiply the 6 by 1,000, you'll get the place that the other 6 is in.

For 63,363, there is one 6 in the tens place and one in the ten thousands place. 60 x 1,000 = 60,000, which is where the first 6 is in. They are separated by x1,000. 

For 36,336, there is a 6 in the ones place and a 6 in the thousands place. 6 x 1,000 = 6,000, and there is a 6 in the thousands place. They are separated by x1,000.

(Hope the explanation helped!)
7 0
3 years ago
Which group of organism has the shortest record of life on earth
Kaylis [27]
That would be.... placoderm fish
7 0
4 years ago
Can you help i really need this please​
xxTIMURxx [149]

Answer:

dont rlly inderstand this need more understanding

Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
The ballfield has a concession stand where they sell snow cones for $0.50 each. The ingredients to make the snow cones costs $9
Galina-37 [17]

Answer:

$4,86

Step-by-step explanation:

Profit without expenses - $0,50×20 snow cones

=$10

Let's calculate the percentage the seller takes for the ingredients daily

The seller per day makes-$0,50×35 snow cones=$17,5

This means the percent he takes for the ingredients from his/her $17,5 daily is- $9÷$17,5 ×100=51,4%.

NB-the 51,4% is the percentage of money he/she takes from the $17,5 everyday

Therefore if on the raining day he made $10

Then $10×51,4÷100=$5,14

NB-the $5,14 is the money he will take for the ingredients on the raining day

Therefore $10-$5,14=$4,86

Therefore the total profit he made with expenses is $4,86

4 0
2 years ago
The digits 1,2,3,4,5,6,7 and 8 are arranged randomly to form a three-digit number find the probability that the number is even a
Korvikt [17]
So each digits can only be selected once.

Let's start counting desired outcome.

Hundred position need to be at least 8. There is only one possible digits. So we will go with 8 and then there are 7 remaining digits.

One position can only be 2,4,6. because we need number to be even. So that's 3 possible digits. We will take one. 6 digits remaining.

Ten position can be anything so that would be 6 possible digits.

So the number of desired outcomes is 3·6 = 18.

Now count all outcomes.

Hundred, ten, and one position can get any digits

So that's 8·7·6 = 336

So the probability would be 18 / 336 = 3 / 56 ≈ 0.0536

Hope this helps.
4 0
3 years ago
Read 2 more answers
Other questions:
  • A 4-pound bag of sugar contains 454 one-teaspoon servings and costs $3.49. A batch of muffins uses 1/4 cup of sugar. How many ba
    10·1 answer
  • Solve each equation. Check your solution. 8 less than a number is 15. Find the number.
    8·2 answers
  • A square photo-display board is made up of 60 rows fo 60 photo each. Area of each square photo is 4 square inches. How long is e
    14·1 answer
  • Solve for p<br> -6p+3=21<br> p=what
    12·2 answers
  • Help? which one should I be choosing
    13·1 answer
  • The Roma family wants to tip 15% of the total cost of their meal, which was $68.25. They left $15.00 on their table. Did they le
    6·1 answer
  • 1 2/7 divided by - 2 1/4
    11·1 answer
  • List all the angle measures from least to greatest.<br><br> From the three triangles
    10·1 answer
  • 4 rows with circles and triangles, left to right. Row 1, circle, triangle, 2 circles, triangle. Row 2, triangle, circle, 2 trian
    6·1 answer
  • Find the value of n in this equation.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!