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slavikrds [6]
3 years ago
11

Which is the vertex of the graph of y=3x^2+2x+1

Mathematics
1 answer:
NeX [460]3 years ago
6 0

Answer:

Step-by-step explanation:

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Find the vertex, x intercept, and y intercept of the following equation: y=(x-3)^2+5
daser333 [38]

Answer:

The x-intercepts are:    ( 3 + i√5, 0) and  (3 - i√5, 0).

The y-intercept is (0,5).

The vertex is at (3, 5).


Step-by-step explanation:

The given equation y=(x-3)^2+5 has the general form y=(x-h)^2+k, whose vertex is at (h,k).

Thus, the vertex of y=(x-3)^2+5 is (3,5).

Find the x-intercepts by setting y=(x-3)^2+5 = 0 and solving for x.  To do this, solve (x-3)^2+5 = 0 for x.  Subtracting 5 from both sides, we get:

(x-3)^2 = -5.  We want to solve this for x.

Taking the square root of both sides, we get:

x-3 = √-1 * √5. Then x = 3 + i√5 and x = 3 - i√5.  The x-intercepts are:

( 3 + i√5, 0) and  (3 - i√5, 0).

3 0
3 years ago
Help me please I will mark brianlyest
joja [24]
I hope I helped! :) :) :)

6 0
3 years ago
The perimeter of a rectangle is 120 inches. The length is 10 more than the width. Find the length and width
OLga [1]

The formula of a perimeter of a rectangle:

P=2(l+w)

We have:

P=120\ in\\\\l=w+10

Substitute

2(w+10+w)=120\\\\2(2w+10)=120\ \ \ \ |:2\\\\2w+10=60\ \ \ \ |-10\\\\2w=50\ \ \ \ |:2\\\\w=25\\\\l=25+10=35

<h3>Answer: Length = 35 in, Width = 25 in.</h3>
4 0
3 years ago
Variables y and x have proportional relationship and y=21 when x=14 what is the value of x when y=12
Lilit [14]

The value of x is 8 when y = 12 if variables x and y have proportional relationship.

According to the given question.

Variables y and x have proportional relationship.

⇒ y ∝ x

Let k be the constant of proportionality.

⇒ y = kx

Also, it is given that

y = 21 when x = 14

Substitute the value of y = 21 and x = 14 in y = kx to find the value of k.

21 = k(14)

⇒  k = 21/14

⇒ k = 3/2

Therefore, the value of x when y = 12

y = kx

⇒ 12 = (3/2)x

⇒ 12 × 2 = 3x

⇒ 24 = 3x

⇒ x = 24/3

⇒ x = 8

Hence, the value of x is 8 when y = 12.

Find out more information about proportional relationship here:

brainly.com/question/12917806

#SPJ4

8 0
2 years ago
Read 2 more answers
Name a real- world object that has a top view of a triangle, and a side and front view that are each rectangles.
balu736 [363]
The Flat-iron skyscraper thats in *New York*

Hope this helps!!

*Plz tell me if its NOT in NY*
4 0
3 years ago
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