All categories

4 years ago

Subtract 9x^2 - 7x from -4x^2 + 6

Mathematics

1 answer:

Rzqust [24]4 years ago

8 0

Answer:

13x^2 - 7x + 6

Step-by-step explanation:

(9x^2 -7x) - 1(-4x^2 + 6)

(9x^2 -7x) + 4x^2 +6

9x^2 - 7x + 4x^2 + 6

(9x^2 + 4x^2) - 7x + 6

13x^2 - 7x + 6

You might be interested in

In a typical children's soccer game, there is one goal scored approximately every 18 minutes. The number of goals scored follows

Alja [10]

Answer:

2.24

Step-by-step explanation:

The probability formula using a Poisson distribution is:

$P(k\ events) = \frac{\lambda^{k}e^{-\lambda}}{k!} \\\lambda\ is\ the\ average\ number\ of\ events\ per\ interval \\e\ is\ euler's\ number \\k\ is\ the\ number\ of\ events\ you\ want\ to\ calculate$

λ = 90 / 18 = 5 average goals per interval (interval = a game)

So if for example you were interested in the probability of making 2 goals in a game

k = 2

$P(k = 2) = \frac{5^{2}e^{-5}}{2!} = 0.084$

This was just an example,

The standard deviation is $\sqrt{\lambda}$

$\sigma = \sqrt{\lambda} \\\sigma = \sqrt{5} \\\sigma = 2.24$

8 0

3 years ago

Amars dog eat 1 1/4 of dry dog food everyday. How many days will a 35-pound bag of dog food last?

Ivanshal [37]

Answer:

28 Days

Step-by-step explanation:

35 divided by 1.25 is 28

3 0

3 years ago

PLS HELP ASAP NOW I REALLY NEED HELP ITS PYTHAGOREAN THEOREM

vodomira [7]

Answer:

a=7.14yd

Step-by-step explanation:

process same as in above question

3 0

3 years ago

Suppose you spin a spinner that is equally likely to land on any one of the numbers from 1 to 8. What are the odds in favor of l

11Alexandr11 [23.1K]

50% since you have a half chance of getting 1 to 4 and other half is 4-8

8 0

2 years ago

14. How many ways can 4 students sit in a row of 19 chairs for a photograph?

olga_2 [115]

Answer:

they can each sit on floor by lining equally some can move back for example the shortest ones can sit medium tall can stand and the largest people can stand in the very back

8 0

3 years ago