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3 years ago

Options 1,2,3 or4? Help!

Mathematics

2 answers:

Sati [7]3 years ago

5 0

Option 2

6/15 = 3/7.5

LUCKY_DIMON [66]3 years ago

3 0

Option 2 because 6/2=3 so you would have to divide 15 by 2 which is 7.5

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(a) Draw in radii OA, OB, OC and OD. Then, explain why OAB must

lions [1.4K]

Answer:

In the given circle, segments OA, OB, OC and OD are radius of the circle.

In other words, all those segments are congruent.

From that we can deduct that triangles OAB and OCD are isosceles triangles, because all segments are equal. That makes those triangles congruent, because they have the same sides.

From the congruence we can deduct that all corresponding internal angles inside those triangles are actually congruent, that's why angle OAB and ODC must be congruent.

Also, angles DOC and BOA are also congruent, which means their subtended arcs are also congruent, because they have the same radius, so mAB = mCD.

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3 years ago

Which trigonometric ratios are correct for triangle ABC?

kykrilka [37]

Answer:

Step-by-step explanation:

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3 years ago

Chord JK intersects chord ST at point L. Find the length of St. If necessary, round to the tenths place.

raketka [301]

Answer:

Step-by-step explanation:

The diagram is drawn and attached.

Using the intersecting chord theorem

SL X LT = JL X LK

x X 12 = 14(x-1)

12x=14x-14

12x-14x=-14

-2x=-14

x=7

Therefore:

ST= SL + LT

=x+12

=7+12

ST=19

The correct option is C

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3 years ago

What is the percentage of cacao in hot chocolate which is made of 480 grams of milk and 20 grams of cacao?

galina1969 [7]

Given that the hot chocolate is made of 480 grams of milk and 20 grams of cacao.

We need to determine the percentage of cacao in hot chocolate.

<u>The percentage of cacao:</u>

The total grams of hot chocolate can be determined by adding the total grams of milk and the total grams of cacao.

Total grams of hot chocolate = Grams of Milk + Grams of cacao

Total grams of hot chocolate = 480 + 20 = 500 grams.

Thus, the total grams of hot chocolate is 500 grams.

Now, we shall find the percentage of cacao.

The percentage of cacao is given by

$\frac{100}{500}\times 20$

Simplifying, the values, we get,

$\frac{2000}{500}=4\%$

Thus, the percentage of cacao is 4%

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3 years ago

Help please im so close to finishing my class

Ivanshal [37]

The correct option is the second one y<=1/2x+3

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2 years ago