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3 years ago

6x(x − 4) − 16x2 − (9x − 1)?

Mathematics

1 answer:

krek1111 [17]3 years ago

7 0

Answer:

$\large\boxed{A.\ -10x^2-33x+1}$

Step-by-step explanation:

$6x(x-4)-16x^2-(9x-1)\qquad\text{use the distributive property}\\\\=(6x)(x)+(6x)(-4)-16x^2-9x-(-1)\\\\=6x^2-24x-16x^2-9x+1\qquad\text{combine like terms}\\\\=(6x^2-16x^2)+(-24x-9x)+1\\\\=-10x^2-33x+1$

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3. Para encontrarmos o resultado de 300 – 650, podemos: a) efetuar 650 + 300 e manter o sinal do resultado b)efetuar 650 + 300 e

hammer [34]

Answer:

To find the result of 300 - 650, we can:

a) do 650 + 300 and keep the result sign

b) do 650 + 300 and invert the result sign

c) do 650 - 300 and keep the result sign

d ) perform 650 - 300 and invert the result sign

Step-by-step explanation:

The correct answer is the letter D .

(perform 650 - 300 and invert the result sign)

300 - 650

300 is more than - 650 on the number line this is because of the negative sign of 650

so we can also write it as 650 - 300 and after getting the require result with put the negative sign to the result, so the result will be -350

Keep the sign of the number with the highest absolute value and subtract from it the lowest absolute value.

- (650 - 300)

Subtract the numbers.

- 350

therefore, the answer is d ) perform 650 - 300 and invert the result sign

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4 years ago

1) The incubation time (in days) of a canary, dove, mynah, pegion, parakeet, raven,

allochka39001 [22]

Answer:

15 minutes

35 minutes

20 minutes

Step-by-step explanation:

The first quartile is given by the starting point of the box on the plot, this point corresponds to 15 minutes

The maximum time is obtijed from the endpoint of the whisker, this corresponds to 35 minutes.

The median value corresponds to the vertical line in between the box on the plot, this point is designated as 20!minutes in the plot.

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3 years ago

Subtract. (2x + 2) - (3x + 11) A) 5x - 9 B) -x - 9 C) -x - 13 D) 5x - 13

kolezko [41]

(2x + 2) - (3x + 11)
Subtract 3x from 2x while subtracting 11 from 2
Final Answer: B.) -x - 9

3 0

3 years ago

Read 2 more answers

What is the experimental probability that a 10th-grade student chosen at random has at least one, but no more than two, siblings

Sophie [7]

Answer:

the experimental probability is 70%

Step-by-step explanation:

PLEASE HELP, TIMEDThe table shows the results of a survey in which 10th-grade students were asked how many siblings (brothers and/or sisters) they have.

What is the experimental probability that a 10th-grade student chosen at random has at least one, but no more than two, siblings?

To the nearest whole percent, the experimental probability is

a. 65%.

b. 70%

c. 75%

d. 80%

We are given to find

the experimental probability that a 10th-grade student chosen at random has at least one, but no more than two, siblings

we know that

probability = ( number of favourable outcomes)/ ( total possible outcomes)

a 10th-grade student chosen at random has at least one, but no more than two, siblings

so, there can be one or two siblings

so, total number of such students =18+10=28

Number of favourable outcomes =28

total number of students =4+18+10+8=40

so, total favourable outcomes =40

now, we can find probability

$p=\frac{28}{40}\\\\p=\frac{28}{40}\times 100\\\\p=70$

So,

Therefore, the experimental probability is 70%

7 0

3 years ago

Jameel drew circle A and found that the measure of the is 58°. He knows that he can use this measure to determine the measure of

Anestetic [448]

Answer:

There is an incompletion here

"FOUND THAT THE --------- IS 58

Step-by-step explanation:

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3 years ago