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
jekas [21]
2 years ago
5

Answer these 2 questions if ur smart?!?!?

Mathematics
2 answers:
Mariulka [41]2 years ago
8 0

1. (4x+5y)(2x-3y)+3xy= 4x*2x-4x*3y+5y*2x-5y*3y+3xy=8x^2-12xy+10xy-15y^2+3xy= 8x^2+xy-15y^2

2. (2x^2+3)(4x+5)-8x(x^2-2)=2x^2*4x+2x^2*5+3*4x+3*5-8x*x^2+8x*2=

=8x^3+10x^2+12x+15-8x^3+16x=

=10x^2+28x+15

Aleks [24]2 years ago
8 0

Answer:

1. 8x^2+xy-15y^2           2. 10x^2 + 28x + 15

Step-by-step explanation:

For Question 1:

(4x + 5y) (2x - 3y) + 3xy

= 8x^2 - 12xy + 10xy - 15y^2 + 3xy

=8x^2+xy-15y^2       (cannot simplify any further)

For Question 2:

(2x^2 + 3)(4x +5) - 8x(x^2 -2)

=8x^3 + 10x^2 + 12x + 15 - 8x^3 + 16x

=10x^2 + 28x + 15         (cannot simplify any further)

You might be interested in
Which of the following is needed to solve the area of a square
blagie [28]

Answer:

C

Step-by-step explanation:

This is because

Area= L×L

therefore the length is needed

5 0
3 years ago
1/4 divided by 1/9<br> Plzzz help meeeeeeeeeeeeeeee
ivann1987 [24]

Answer:

1/4÷1/9=1/4×9/1

=9/4

=1 1/4

8 0
2 years ago
Each month, a local bakery pays $0.75 per square foot to lease 500 square feet of space in a building. The bakery must also pay
ElenaW [278]

Answer:

C=375+0.025d

Step-by-step explanation:

Given:

'C' represent total cost of lease. 'd' represents cost of sales in dollars.

Cost of 1 square foot of building = $0.75

Total area of the building = 500 square feet.

Sales tax on the total sales = 2.5%

Now, cost of 500 square feet area = Cost of 1 square foot × Total area

Cost of 500 square feet area = 0.75\times 500=\$375

Now, sales tax is 2.5 of total sales 'd'. This gives,

Sales tax = 2.5\%\times d=\frac{2.5}{100}d=0.025d

Now, total cost is the sum of least amount and total sales tax.

Total cost = Least amount + Sales tax

⇒ C = 375+0.025d

8 0
3 years ago
Graph the inequality.
LuckyWell [14K]

Answer:

x<=5

Step-by-step explanation:

Two things

  • direction its pointing is always how the sign will look like
  • if the circle is shaded it will have an "or equals to" sign; if its blank, there is only the "greater/lesser" sign
8 0
3 years ago
Helpppppp meeeee plzzzzzzzzzz
djyliett [7]

Answer:

they got -21 when they were supposted to get +21

and they also got +6x when they were supposted to get -6x

Step-by-step explanation:

that's because -3 and 2x are multiplied together and when you are multiplying negative and positive number you need to get negative result.

when you are multiplying negative with negative number, you will get positive number.

8 0
2 years ago
Other questions:
  • a spinner has 1 yellow, 2 red, 3 blue and 2 green sections. What is the probability of not getting a yellow?
    6·2 answers
  • What is the value of 5 - 12?
    8·2 answers
  • The larger of two numbers is five more than twice the smaller number. The sum of the two numbers is 38. Find the numbers.
    8·2 answers
  • Reflect 4, 1 in the x-axis
    10·1 answer
  • At full price, Melvin would pay 1.6791.6791.679 dollars per liter of gasoline. Using his loyalty card, Melvin only pays 1.4391.4
    14·2 answers
  • Help please ASAP !!<br> !!!!
    6·1 answer
  • There are some beads in the box. 40% of them were blue and the rest were red. Adam used all the blue beads and 25% of the red be
    10·1 answer
  • Please help me !! find the missing sides
    15·1 answer
  • A right triangle has a leg of 15 feet and a second leg of 24 feet. Find the length of the hypotenuse
    14·1 answer
  • Tell whether each function is linear or non-linear. Function A Function B x 0 1 2 3 y 0 1 8 27 y = –x + 5
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!