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horsena [70]
2 years ago
13

Perform the operation. (-2x^2 – 8x + 3) + (-9x^2 + x + 3)

Mathematics
2 answers:
galina1969 [7]2 years ago
5 0

Answer:

-11x^{2} + 7x + 6

Step-by-step explanation:

ludmilkaskok [199]2 years ago
3 0
The answer is: - 11x^2 - 7x + 6
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Doughnuts at one shop cost £1.20 each.
charle [14.2K]

Answer: 30p

Step-by-step explanation:

Cost of donuts in the first shop £1.20

Cost at the second shop at 25% higher

= 1.20 x 1.25 = 1.50

Difference in price

= 1.50 - 1.20 = 0.30

3 0
3 years ago
Explain your answer !! <br> Have a nice day <br><br> Will give braisnlt
Viktor [21]

Answer:

(3,-4) or x=3 and y= -4

Step-by-step explanation:

I'm going to solve this by substitution

We first need to get a variable by itself in one of the two equations (it doesn't matter which variable and the equation you do the work on doesn't matter either)

I'm going to solve for y in the second equation

-4x-4y=4

add 4y and subtract 4 from both sides to get

-4x-4=4y

Divide by 4 to get

-x-1=y

We can plug this value in for y into the first equation and get

4x+5(-x-1)= -8

Solve for x

4x-5x-5= -8

-x-5= -8

-x= -3

x=3

We can plug this value into one of the first two equations and solve for y

4(3)+5y= -8

12+5y= -8

5y= -20

y= -4

Therefore the solution is (3,-4) or x=3 and y= -4

8 0
2 years ago
Which sentence describes a way to determine the missing number in the
Llana [10]

Answer:

70910 (c)

Step-by-step explanation:

You move the decimal point to the right each time.

5 0
2 years ago
F(1) = -16<br> so<br> f(n) = f(n − 1).<br> NH<br> f(3) =<br> Evaluate sequence in recursive form
gogolik [260]
Of I don’t know sorry about that
5 0
3 years ago
Jules kicks a soccer ball off the ground and into the air with an initial velocity of 25 feet
hichkok12 [17]

Answer:

Set up your height equation, then factor or use quadratic formula to find when h(t)=0

Step-by-step explanation:

Your equation will be -16t^2+vt +h where v is the initial velocity and h is the starting height. Now either factor or quadratic equation, whichever is easier for you.

Remember that the ball is on the ground when h(t)=0 since that is the height. There will be two zeros,  one is a negative number so would be before you kicked the ball, the other one will be when the ball comes back down.

5 0
3 years ago
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