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Hunter-Best [27]
3 years ago
15

Kathy swam 3 laps in the pool this week. She must swim more than 12 laps each month. How many more laps must Kathy swim to meet

her goal
Mathematics
1 answer:
ra1l [238]3 years ago
8 0

Answer:

9

Step-by-step explanation:

12-3=9

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Jason predicted that 227 students would attend the school dance. The actual number was 250. What is the percent error of Jason’s
VikaD [51]

Answer:

9.2%

Step-by-step explanation:

227/250= .908

1.00-90.8=9.2

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Plz help ..................⬆️
Hatshy [7]
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PRECAL <br><br>Find the compliment of 0.25<br><br>Find the supplement of 7π/8
balandron [24]
The unit of measurement is not specified, so for the sake of this problem, we'll assume it's radians (If you need it in degrees, I'll be happy to edit).

Find the compliment of 0.25:

Complementary angles add up to 90 degrees. In radians, this would be π/2. If you're unsure how I got this, check degrees to radian conversions.

The compliment of 0.25 would be \dfrac{\pi}{2} - \dfrac{1}{4} (1/4=0.25)

\dfrac{\pi}{2} - \dfrac{1}{4}

= \dfrac{\pi}{2} - \dfrac{1}{4} = \dfrac{2\pi-1}{4}

(This is the simplified form in case you're homework needs it in this form)

That's the compliment. In decimal (rounded to the nearest hundredth), this would be 1.32 radians.

Find the supplement of 7π/8:

Supplementary angles add up to 180 degrees. In radians, this would be π.

The supplement would be the following:

\pi- \dfrac{7\pi}{8}

=\dfrac{8\pi}{8}-\dfrac{7\pi}{8}=\dfrac{\pi}{8}

Thus, the supplement is π/8 radians. If any of this struck you as confusing, comment and I'd be happy to clarify.
8 0
4 years ago
(4y − 3)(2y2 + 3y − 5)
IRINA_888 [86]

Answer:

8y^3 + 6y^2- 29y + 15

Step-by-step explanation:

(4y-3)(2y^2+3y-5)\\4y(2y^2 + 3y - 5) - 3(2y^2+3y-5)\\8y^3+12y^2-20y-3(2y^2+3y-5)\\8y^3+12y^2-20y-6y^2-9y+15\\8y^3+6y^2-29y-9y+15\\= 8y^3+6y^2-29y+15

6 0
3 years ago
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