The opposite of x squared plus 5?

Answers

Answer 1

Answer: $f(x)=- x^(2) +5\n\nx=0,\ so\ f(x)=-0^2+5=5\nx=1,\ so\ f(x)=-1^2+5=4\nx=2,\ so\ f(x)=-2^2+5=1\nx=3,\ so\ f(x)=-3^2+5=-4$

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Find the equation of a line perpendicular to y - 12 = 2x – 8 that passes through the point (2, 3). (answer in slope-intercept form)

Answers

Hello,

The slope of y-12=2x-8 is 2 thus the perpendicular will have as slope -1/2

y-3=-1/2(x-2)
or y=-x/2 + 4 is the equation searched.

Choose the number that is composite.

A. 2
B. 21
C. 31
D. 17

Answers

A composite number has more than two factors. (B) 21 is a composite number because the factors of 21 are 7 × 3.

A coin is to be tossed until a head appears twice in a row. What is the sample space for this experiment? If the coin is fair, what is the probability that it will be tossed exactly four times?

Answers

Answer: $(2)/(16)$

Step-by-step explanation:

if the coin is tossed four times then the possible sample space is formed

$S=\left \{ HH, THH, HTHH, TTHH, HTTHH, THTHH, TTTHH, ...\right \}$

For the probability that the coin is tossed only four times is when

For tossing four times sample space is

S=( HHHH HHHT HHTH HHTT

HTHH HTHT HTTH HTTT

THHH THHT THTH THTT

TTHH TTHT TTTH TTTT )

out of the above required ones are HTHH,TTHH

so the probability is $(2)/(16)$

A grocer wants to make a 10-pound mixture of peanuts and cashews that he can sell for $4.75 per pound. If peanuts cost $4.00 per pound and cashews cost $6.50 per pound, how many pounds of cashews should he use?3

4

6

7

Answers

He needs 5 pounds of cashews

Answer:

ZE ANSWER IS 3

Step-by-step explanation:

1+4=5
2+5=12
3+6=21
8+11=

Answers

There's a pattern
You see, like in this problem:
2 + 5 = 12
They did 5 times 2 = 10, plus da 2 in da problem = 12.
Same with 3 + 6 = 21, 6 times 3 = 18, 18 plus da 3 given in da problem = 21.
Just like 1 + 4 = 5, 4 times 1 = 4, plus da 1 in da problem = 5.
SO,
with that strategy, 8 +11 = 96, because 8 times 11 = 88, plus da 8 given in da problem = 96.
I hope I helped! =D

What is 0.000000986 in scientific notation?
____x10---

Answers

$0.000000986 = 986 * 10^(-9)=\boxed{ 9.86 * 10^(-7)}$

it's going to be a negative exponent, since the number is less that 1.
move the decimal to where 986 is more than one but less that 10.
9.86X10^-7

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