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Alex_Xolod [135]
3 years ago
12

Find two numbers which add to give 0 and multiply to give -16

Mathematics
1 answer:
umka21 [38]3 years ago
5 0

Answer:

4 and -4

Step-by-step explanation:

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Eliminate the parameter.<br><br> x = 3 cos t, y = 3 sin t
ElenaW [278]

Answer:

x^2+y^2 = 3^2

Step-by-step explanation:

We need to eliminate the parameter t

Given:

x = 3 cos t

y = 3 sin t

Squaring the above both equations

(x)^2=(3 cos t)^2

(y)^2 =(3 sin t)^2

x^2 = 3^2 cos^2t

y^2=3^2 sin^2t

Now adding both equations

x^2+y^2=3^2 cos^2t+3^2 sin^2t

Taking 3^2 common

x^2+y^2=3^2 (cos^2t+sin^2t)

We know that cos^2t+sin^2t = 1

so, putting the value

x^2+y^2=3^2(1)

x^2+y^2 = 3^2

Hence the parameter t is eliminated.

4 0
2 years ago
Solve: <img src="https://tex.z-dn.net/?f=%202%20x%5E%7B2%7D%20" id="TexFormula1" title=" 2 x^{2} " alt=" 2 x^{2} " align="absmid
ziro4ka [17]
2x^2 + 8x = 0
2x(× + 4) = 0

2x = 0
x = 0/2 =0

x + 4 = 0
x = -4
3 0
2 years ago
The moon has a mass of 7.35x1022, while earth has a mass of 5.97x1024 Kg. What is the combined mass of the moon and earth.
Veseljchak [2.6K]

Answer:

6.0435*10²⁴

Step-by-step explanation:

Moon:  7.35*10²²

Earth: 5.97*10²⁴

7.35*10²² = 0.0735*10²⁴

then:

0.0735*10²⁴ + 5.97*10²⁴ = (0.0735 + 5.97)*10²⁴

=  6.0435 *10²⁴

5 0
3 years ago
How i get the y-intercept
jeka94

Answer:

<em>hey </em>

Step-by-step explanation:

which u r studying inn

5 0
2 years ago
Factor 2x^2-128 completely
Alina [70]
2x² - 128

2(x² - 64), but (x² - 64)  = x² - 8² (difference of 2 squares),[a²-b²=(a-b)(a+b)]

2(x² - 64) = 2(x² - 8²) = 2(x-8)(x+8)

8 0
3 years ago
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