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andrey2020 [161]

3 years ago

12

Look at the picture and answer pls!

2 answers:

Ray Of Light [21]3 years ago

7 0

Answer:

its b I'm pretty sure........

Dovator [93]3 years ago

4 0

Answer:

B

Step-by-step explanation:

19 4/3 is positive so you need to make it a negative number so it would be -19 4/3

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Which angle relationship alone could be used as a reason that two angles are congruent?

zimovet [89]

Supplementary angles

7 0

3 years ago

Jane and Nina live 480 miles apart. Wanting to surprise each other, they happened to start

lord [1]

Answer:75 mph

Step-by-step explanation:

5 0

2 years ago

The recursive function LaTeX: f\left(0\right)=1,\:f\left(n\right)=f\left(n-1\right)+2nf ( 0 ) = 1 , f ( n ) = f ( n − 1 ) + 2 n

m_a_m_a [10]

Question:

The recursive function $f(0) = 1$ , $f(n) = f(n-1) + 2n$ represents the nth term of a sequence. Determine the explicit function

Answer:

$f(n) = n^2 + n+1$

Step-by-step explanation:

Given

$f(0) = 1$

$f(n) = f(n-1) + 2n$

Required

Write an explicit formula

Let n = 1

$f(1) = f(1-1) + 2*1$

$f(1) = f(0) + 2$

$f(1) = 1 + 2 = 3$

Let n = 2

$f(2) = f(2-1) + 2*2$

$f(2) = f(1) + 4$

$f(2) = 3 + 4 = 7$

Let n =3

$f(3)=f(3-1) + 2 * 3$

$f(3)=f(2) + 6$

$f(3)=7+ 6 = 13$

Let n = 4

$f(4) = f(4 - 1) + 2 * 4$

$f(4) = f(3) + 8$

$f(4) = 13+ 8 = 21$

So, we have:

$f(1) = 3= 1 + 2 * 1=1+0*1*2*1$

$f(2) = 7= 3 + 2 * 2=1+1*2+2*2$

$f(3) = 13= 7 + 2 * 3= 1+2*3+2*3$

$f(4) = 21 = 13 + 2 * 4= 1+3*4 +2 *4$

Following the above pattern:

$f(n) = 1 + (n - 1) * n + 2 * n$

$f(n) = 1 + n(n - 1) + 2n$

Open bracket

$f(n) = 1 + n^2 - n + 2n$

$f(n) = 1 + n^2 + n$

$f(n) = n^2 + n+1$

3 0

2 years ago

Can you help me with this

marishachu [46]

Answer:

Step-by-step explanation:

8 0

3 years ago

Determine an approximate value for y if the coordinate (-0.5387 ,y) is on the unit circle

adoni [48]

Answer:

y = 0.8425 or y = -0.8425

Step-by-step explanation:

All points in the Cartesian coordinate system have an x and y coordinate, defined by two perpendicular measurements.

If the point is on the unit circle, then the radius of the circle is defined to be 1 unit, and the corresponding right triangle follows the Pythagorean Theorem.

$a^2+b^2=c^2$

For a unit circle:

$x^2+y^2=1^2$

Substituting the known value for x, and simplifying...

$(-0.5387)^2+y^2=(1)^2$

$0.29019769+y^2=1$

Subtracting 0.29019769 from both sides to begin to isolate "y"...

$y^2=1-0.29019769$

$y^2=0.70980231$

Applying the square root property...

$\sqrt{y^2}=\pm \sqrt{0.70980231}$

$y=\pm 0.8424976171...$

So, (to 4 decimal places), the y coordinate could be either 0.8425 or -0.8425.

With only the given information, either result is a valid answer.

3 0

2 years ago