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Lorico [155]
2 years ago
10

Need help please finding x

Mathematics
1 answer:
Drupady [299]2 years ago
4 0

9514 1404 393

Answer:

  x = 7

Step-by-step explanation:

Corresponding segments are proportional.

  x/8 = 21/24

  x/8 = 7/8 . . . . reduce the fraction

  x = 7 . . . . . . . multiply by 8

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Replace ∗ with a monomial so that the derived equality will be an identity: (15y + ∗)2 = 225y2+12x3y+0.16x6
kobusy [5.1K]

Answer:

<u>∗ = 0.4x³</u>

Step-by-step explanation:

(15y + ∗)² = 225y²+12x³y+0.16x⁶

<u>Note:</u>

225y² = 15y * 15y = (15y)²

12x³y = 2 * 15y * 0.4x³

0.16x⁶ = 0.4x³ * 0.4x³ = (0.4x³)²

So, by factoring the right hand side:

225y²+12x³y+0.16x⁶ = (15y + 0.4x³)²

By comparing the left hand side with (15y + 0.4x³)²

<u>So, ∗ should be replaced with the monomial 0.4x³</u>

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3 years ago
Which point is an x-intercept of the quadratic function
daser333 [38]
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8 0
3 years ago
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Step-by-step explanation:

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