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
Alexxx [7]
3 years ago
14

Write an equivalent expressions for (8a2 -15a + 9) - (6a2 - 9a - 20).

Mathematics
1 answer:
Fiesta28 [93]3 years ago
5 0

Answer:

2a2 - 6a + 29

Step-by-step explanation:

You might be interested in
A pet store sold 49 siamese cats. If the ratio of siamese cats to house cats sold was 7:4, what is the combined amount of cats s
S_A_V [24]

Answer:

uyygfhuittyuuuujhhtyyuiiyyuuu

4 0
3 years ago
This is a value of the variable that makes the equation a true statement
Ratling [72]
That would be called the solution
5 0
3 years ago
What is the relationship between the graphs of f(x) = x^2 and g(x) = x^2 + 6?
Tamiku [17]
They have the same slope, but g(x) intercepts the y axis higher.
6 0
2 years ago
Linda is twice the age of Vera.
Paladinen [302]

Answer:

Tanya is 20 years old

Step-by-step explanation:

Let the age of Vera = x years

The age of Linda is twice the age of Vera = 2x years

Tanya  is four less than four times the age of Linda = 4(2x)-4 = 8x-4

Total age of Vera, Linda and Tanya is:

x+2x+8x-4

Combine the like terms:

11x-4

But now their total age is two more than nine times the age of Vera:

11x-4 = 9x+2

Solve the expression

Combine the like terms:

11x-9x=2+4

2x=6

Divide both the sides by 2

2x/2 = 6/2

x= 3

Thus the age of Vera is 3 years.

The age of Linda is 2x= 2*3 = 6 years

The age of Tanya is 8x-4 = 8*3 - 4 = 24-4 = 20years....

7 0
3 years ago
A bag contains 40 marbles. The probability of selecting a red marble at random is 1/5. How many red marbles are in the bag?
goblinko [34]

Answer:

8 red marbles.

Step-by-step explanation:

All together we have 40 marbles. The fraction of marbles that are red is 1/5 which means that we should divide the total number of marbles, which is 40 by the denominator ( Bottom number of fraction ) 5 so that we get the number of groups that have 1 red marble in them. In this case we have 8 groups.

40/5=8

You always divide by the denominator ( Bottom number of fraction ) first and then you multiply your answer by the numerator ( Top number of fraction ) .

If each group has 1 red marble in it and we have 8 groups, it means that we have 8 red marbles in the bag.

1 * 8 = 8 red marbles in the bag

If the numerator (number above the fraction line) was more than one, then this would mean that we have more than 1 marble in each group of marbles.

Example:

If we had 3/5 we would have 3 marbles in each group of marbles. This means that instead of doing 1 * 8 we would have to do 3 * 8 = 24. We would have 24 red marbles in the bag.

Easy and quick way if you do not need the explanation:

Another way we could do this is by simply multiplying the fraction ( 1/5 ) by the total number of marbles ( 40 ). This would still give us an answer of 8 red marbles in the bag. 40/5=8, 8*1=8

7 0
3 years ago
Other questions:
  • Classify the events as dependent or independent. the events of getting two aces when two cards are drawn from a deck of playing
    10·1 answer
  • What is infinity + infinity
    7·2 answers
  • IF a 50 pound bag costs $6.36, which expression shows how much 1 pound costs?
    9·1 answer
  • What is the prime factorization of 44?
    5·2 answers
  • 12 1/2 as a decimal .......................................................
    10·2 answers
  • Sixty miles per hour is how many feet per second
    9·2 answers
  • Can someone show me the steps for solving. I had help but I'm confused.
    10·2 answers
  • A science fair poster is a rectangle 3 feet long and 2 feet wide. What is the area of the poster in square inches?
    11·1 answer
  • Maitland multiplies 0.05 x 0.8 on a calculator. The calculator shows a product of 0.04. Maitland says the calculator must be bro
    8·2 answers
  • Plisss help i am abaut to go to summerschool because i never know what to put pliss show work
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!