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aksik [14]
2 years ago
15

Can anyone help to answer my previous questions?

Mathematics
1 answer:
bixtya [17]2 years ago
5 0

Step-by-step explanation:

Umm I can try. c:

I'll see....

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PLSSSS HELP I REALLY NEED TO PASS. What is the wave velocity if the wave length is 100 cm and the frequency is 2 Hz?
pishuonlain [190]
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use the formula speed = wavelength x wave frequency
7 0
3 years ago
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In the equation left parenthesis x squared plus 14 x right parenthesis plus left parenthesis y squared minus 18 y right parenthe
Phoenix [80]

Answer:

Complete the square on x by adding​ <u>49</u> to both sides.

Complete the square on y by adding​ <u>81</u> to both sides.

Step-by-step explanation:

We have been given an equation (x^2+14x)+(y^2+18y)=5. We are asked to complete the squares for both x and y.

We know to complete a square, we add the half the square of coefficient of x or y term.

Upon looking at our given equation, we can see that coefficient of x is 14 and coefficient of y is 18.

(\frac{14}{2})^2=7^2=49

(\frac{18}{2})^2=9^2=81

Now, we will add 49 to complete the x term square and 81 to complete y term square on both sides of our given equation as:

(x^2+14x+49)+(y^2+18y+81)=5+49+81

Applying the perfect square formula a^2+2ab+b^2=(a+b)^2, we will get:

(x+7)^2+(y+9)^2=135

Therefore, We can complete the square on x by adding​ <u>49</u> to both sides and the square on y by adding​ <u>81</u> to both sides.

7 0
3 years ago
What is the number?
kotegsom [21]

Answer:

3 and 4

Step-by-step explanation:

3 and 4 added up is 7,4 is one number mor than 3

3 0
2 years ago
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PLS HELP ««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««
Kamila [148]

Answer:

x-intercept (2,0) or x=2

y-intercept (0,-4)  or y=-4

Step-by-step explanation:

4x-2y>8

2x-y>4

2x-4>y

y<2x-4

y=2x-4

when y=0

2x=4

x=2

x-intercept is (2,0)

and y-intercept is (0,-4)

put x=0,y=0

0-0>8

or 0>8 which is not true. so (0,0) does not lie on the graph.

so graph lies  right of the line .

7 0
3 years ago
50 POINTS AND BRAINLIEST! What is the area of this figure?
oksian1 [2.3K]

Answer:

42 units²

Step-by-step explanation:

The figure is composed of a rectangle ( middle section) and 2 triangles with the same length base and height

Area of rectangle = 7 × 4 = 28 units²

Area of 2 triangles = 2 × \frac{1}{2} × 7 × 2 = 14 units²

Area of figure = 28 + 14 = 42 units²


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3 years ago
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