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Leno4ka [110]
3 years ago
9

Х=3y+4 solved with substituting​

Mathematics
1 answer:
Anna007 [38]3 years ago
8 0

Answer: To use with subtituting you need two numbers.

Step-by-step explanation:

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There are 2 questions pls answer fast
Furkat [3]

Answer:

Q1: B. UHWXUQV

Q2: None of these answers equal 12 so I'll just tell you the answers for all of them in case you mistyped.

a. 66

b. 82

c. 120

d. 109

Im assuming you meant 120. If so, your answer is c.

5 0
3 years ago
Hunter placed 2 red, 3 blue, 1 yellow, 8 black, and 7 white straws into a bag.
Sphinxa [80]
7/21 or 1/3rd, it's just a ratio of white to all, there's 7 white straws and 21 in all, then you can simplify it down to 1/3rd.
8 0
3 years ago
A towel has a repeating pattern of two green stripes, then 3 blue stripes, and then 1 yellow stripe. If the towel has 20 stripes
EleoNora [17]
The answer would be a total of 9 blue stripes.
4 0
4 years ago
At which points are the tangents drawn to the ellipse x 2 + y 2 = [ a ] x + [ a ] y parallel to
In-s [12.5K]

The given equation of the ellipse is x^2 + y^2 = 2 x + 2 y

At tangent line, the point is horizontal with the x-axis therefore slope = dy / dx = 0

<span>So we have to take the 1st derivative of the equation then equate dy / dx to zero.</span>

x^2 + y^2 = 2 x + 2 y

x^2 – 2 x = 2 y – y^2

(2x – 2) dx = (2 – 2y) dy

(2x – 2) / (2 – 2y) = 0

2x – 2 = 0

x = 1

 

To find for y, we go back to the original equation then substitute the value of x.

x^2 + y^2 = 2 x + 2 y

1^2 + y^2 = 2 * 1 + 2 y

y^2 – 2y + 1 – 2 = 0

y^2 – 2y – 1 = 0

Finding the roots using the quadratic formula:

y = [-(- 2) ± sqrt ( (-2)^2 – 4*1*-1)] / 2*1

y = 1 ± 2.828

y = -1.828 , 3.828

 

<span>Therefore the tangents are parallel to the x-axis at points (1, -1.828) and (1, 3.828).</span>

3 0
4 years ago
Create a memory device to help you remember the quadratic formula. The device could be a song, drawing, rhyme, mnemonic device,
Lostsunrise [7]

Answer:

q-u-a-d-r-a-t-i-c  f-o-r-m-u-l-a

Step-by-step explanation:

6 0
4 years ago
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