I really don't know can someone help me

Answers

Answer 1

Answer: 6 + 4 ÷ 2

The "order of operations" (which you learned a long time ago
if you're in high school now) says that division should be done
before addition.

So do the division: 4 ÷ 2 = 2

Now you have 6 + 2

Now do the addition: 6 + 2 = 8 .

Answer 2

Answer: you would just divide 4 by 2 so 4 divided by 2 would =2.
Then you would 6+2 which would = 8
So your answer is.......8

I hope that helped:)

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What is square root of 81

Answers

The square root of 81 is 9, this can be proven by squaring 9, which's result is 81.

The answer is 9 because 9 times 9 it equal 81 so that the answer

Find the exact roots of x^2+10x-8=0 by completing the square

Answers

From the original equation x^2+10x-8=0, move the loose number on the other side. Your new equation will be x^2+10x=8. Moving an element from one side to another reverses its sign. From -8 to +8. Then take half of the x-term and square it and add it on both sides. X-term is 10x and 10 is the number, half of it is 5 then square of 5 is 25. Add 25 on both side. Your new equation will be x^2+10x+25=8+25. Then complete the square form of the left side of the equation, (x+5)^2=33. Square root both side then you will get x+5=squareroot of 33. Your x = -5 plus/minus squareroot of 33.

2/3 as a whole number

Answers

285 x 2 to get 570, then divide by 3, which equals 190

2/3 isn't a whole number because it's equal to:

0.666666666666....

Whole numbers are numbers such as:

0, 1, 2, 3 etc.

A recursive function is shown below:f(1) = 2 and f(n) = f(n - 1) - 5; n > 1

Which of the following lists the terms in the sequence defined by this recursive function? (4 points)

2, 3, 8, 13, 18, ...
2, 7, 12, 17, 22, ...
2, -3, -8, -13, -18, ...
2, -7, -12, -17, -22,

Help ill give medal or anything!!!

Answers

$f(1)=\fbox2\ and\ f(n)=f(n-1)-5\n\underline{f(2)}=f(2-1)-5=f(1)-5=2-5=\fbox{-3}\n\underline{\underline{f(3)}}=f(3-1)-5=\underline{f(2)}-5=-3-5=\boxed{-8}\nf(4)=f(4-1)-5=\underline{\underline{f(3)}}-5=-8-5=\boxed{-13}\n\vdots\nAnswer:\boxed{\boxed{2;-3;-8;-13;-18;...}\leftarrow answer}$

A vehicle travels a distance of 5t4 − 10t2 + 6 miles in t + 2 minutes. What is the vehicle's speed?

Answers

Let distance be s and velocity be v
s = 5t⁴ - 10t² + 6
We know velocity is the change in distance per unit time, so
v = ds/dt
v = 20t³ - 20t

Answer:

The speed is 5t^3 - 10t^2 + 10t - 20 + 46/(t+2) miles per minute

Step-by-step explanation:

Find the coordinates of a point on a circle with radius 5 corresponding to an angle of 25°. (x, y) = Round your answers to three decimal places.

Answers

Step-by-step explanation:

that means it is the top vertex of the inscribed trigonometric triangle.

we assume the center of the circle is at the origin (0, 0).

so, the x-coordinate is then

cos(25°)×5 = 4.531538935... ≈ 4.532

the y-coordinate is then

sin(25°)×5 = 2.113091309... ≈ 2.113

remember, the basic trigonometric functions deliver these lengths inside the norm circle (radius = 1). for any other circle we need to multiply them by the actual radius.

the point on the circle at 25° is at

(4.532, 2.113)

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