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Ksju [112]
3 years ago
8

Really need help with these please!

Mathematics
1 answer:
jasenka [17]3 years ago
3 0

Answer:

x = 2.3

Step-by-step explanation:

Since XY and YZ are congruent, then their distance must be equal. This means the length of YZ is also 6.9. To sole for x, set them equal.

3x = 6.9

x = 2.3

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Answer:

3000

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6 0
2 years ago
D) A painting originally priced at $300 sold for $400. x 100 = % increase or decrease? In order from greatest to least:
Olenka [21]
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6 0
3 years ago
I need help on this h/j=15 for j
4vir4ik [10]
 x in (-oo:+oo)

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8 0
3 years ago
A hyperbola centered at the origin has a vertex at (0,−40) and a focus at (0, 41).
aniked [119]

\frac{(x-h)^{2} }{a^{2} } - \frac{(y - k)^{2} }{b^{2} } = 1

\frac{(x-0)^{2} }{40^{2} } - \frac{(y - 0)^{2} }{b^{2} } = 1

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         b² = 1681 - 1600

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y-intercept (b) = 0 since the center is at the origin

Answer: y = \frac{9}{40}x and y = -\frac{9}{40}x

7 0
3 years ago
Read 2 more answers
a toy ball expands and contracts. When it is completely closed, it has a diameter of 15.5. Find the volume of the ball when it i
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Volume of a sphere is 4/3pi∗r3. r is half the diameter.
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