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4 years ago

PLS HELP IM DESPERATED

Mathematics

1 answer:

katen-ka-za [31]4 years ago

7 0

Answer:

Step-by-step explanation:

Coordinates are an ordered pair, meaning the first coordinate means one thing and the second coordinate means something else.

The first coordinate is the horizontal distance to the right of the reference point (or reference line). The reference line is the vertical line marked "y", called the y-axis. The distance left or right of that line is indicated by the numbers along the horizontal line in the middle of the graph.

The distance 0.5 indicated by the first coordinate means half a unit to the right of the vertical y-axis. There is only one point between 0 and 1 units to the right of the vertical axis: point N.

___

The second coordinate of the ordered pair indicates the vertical distance from the reference point (or line). The reference line is the x-axis, indicated by the "x" at its right end. The numbers along the y-axis mark distance above or below that horizontal line. The second coordinate of 2 means you're looking for a point 2 units above the x-axis. There is only one point at that distance: point N.

The point you're looking for is point N, answer choice (B).

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Four friends are playing a game. They randomly choose a handful of marbles from a bag. The player with the highest ratio of blue

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We are given the number of Blue and Purple Marbles for each of the four friends. So first we have to find the ratio of blue marbles to purple marbles for each of them.

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3 years ago

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Given △ABC. m∠A>m∠B>m∠C. Perimeter=30. Which side of △ABC may have length 7?

lisabon 2012 [21]

<u>Solution-</u>

As given in △ABC,

$m\angle A>m\angle B>m\angle C$

As from the properties of trigonometry we know that, the greater the angle is, the greater is the value of its sine. i.e

$\sin A>\sin B>\sin C$

According to the sine law,

$\frac{a}{\sin A}=\frac{b}{\sin B}=\frac{c}{\sin C}$

In order to make the ratio same, even though m∠A>m∠B>m∠C, a must be greater than b and b must be greater than c.

$\Rightarrow a>b>c$

Also given that its perimeter is 30. Now we have to find out whose side length is 7. So we have 3 cases.

Case-1. Length of a is 7

As a must be the greatest, so b and c must be less than 7. Which leads to a condition where its perimeter won't be 30. As no 3 numbers less than 7 can add up to 30.

Case-2. Length of b is 7

As b is greater than c, so c must 6 or less than 6. But in this case the formation of triangle is impossible. Because the triangle inequality theorem states that the sum of any 2 sides of a triangle must be greater than the measure of the third side. If b is 7 and c is 6, then a must be 17. So no 2 numbers below 7 can add up to 17.

Case-3. Length of c is 7

As this is the last case, this must be true.

Therefore, by taking the aid of process of elimination, we can deduce that side c may have length 7.

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4 years ago

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Step-by-step explanation:

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