X+y+z=10 6x+y+2z=37 y-z=10
1 answer:
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In 7th grade:
red-hair students =58
another color hair students =609
In 8th grade:
red-hair students =60
Let's assume
another color hair students =x
now, we are given
The numbers of red-haired students in 8th grade are proportional to the numbers in 7th
so,
now, we can solve for x
we get
we get
so, students have another color hair in 8th grade is 630.........Answer
Answer:
c. Use a compass to swing an arc on either side of the segment for each endpoint.
Step-by-step explanation:
The steps to constructing a perpendicular bisector are illustrated in the attachment.
Steps 2 and 3 are described by answer choice C.
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<em>Other choices</em>
(a) In order to get the arcs to intersect each other, their radius must be <em>more than</em> one half of the segment length.
(b) At no point in the construction are concentric circles involved.
(c) A ruler is not used in any <em>construction</em>. Only a straightedge with no markings will be used for construction.
