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timofeeve [1]
3 years ago
14

A town clock has a minute hand that is 1.5 meters long and an hour hand that is 1.2 meters long. What is the approximate distanc

e in meters between the ends of the hands at 9 o’clock? A. 2.3 B. 1.9 C. 0.9 D. 0.3
Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
3 0
The answer is B) 1.9 you need to use Pythagoras where a^2+b^2=c^2, so at 9 o'clock it will make a right angle triangle so the square root of 1.5^2+1.2^2 is 1.92093... rounded it is 1.9
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Which quadratic relation has a y-intercept of 8?
Tpy6a [65]

Answer:

y = 0.5 (x^2 -2x + 16) has a y-intercept of 8.

Step-by-step explanation:

The x-coordinate of every y-intercept is zero.  To determine which of the four quadratics given here has a y-intercept of 8, we need only substitute 0 for x in each; if the result is 8, we've found the desired quadratic.

O y = 0.5(x + 2)(x + 4) becomes y = 0.5(2)(4) = 4 (reject this answer)

O y = 0.5 (x - 2)(x + 8) becomes y = 0.5(-2)(8) = -8 (reject)

O y = 0.5(x2 -2x - 16) becomes y = 0.5(-16) = -8 (reject)

<em>O y = 0.5 (x2 -2x + 16) becomes y = 0.5(16) = 8 This is correct; that '8' represents the y-intercept (0, 8).</em>

6 0
3 years ago
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4 0
3 years ago
in a class of 28 sixth graders all but one of the students are 12 years old. witch two data measurements are the same for the st
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Out of 28 kids there is one that isnt 12
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1:28


5 0
3 years ago
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Answer:

y=-x-2*-3

Step-by-step explanation:

3 0
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Morgarella [4.7K]

Answer:

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Step-by-step explanation:

7 0
2 years ago
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