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icang [17]
3 years ago
5

Please help me on number 10 and 11

Mathematics
1 answer:
denpristay [2]3 years ago
3 0
To solve number 10, you should do just as it says and type it into a calculator. To save you the trouble, I have already done this. It equals approximately 4.26.

As for number 11, you have not included the whole question, so there is not currently enough information to solve it. 
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5 times a number "x" is not less than 15 as an inequality
jeka94

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x > 3

Step-by-step explanation:

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Simplify, using the distributive property and then combining like terms. 2(x+y)+(2x−2y)
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Answer:

4x

Step-by-step explanation:

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. A pack of baseball cards has 12 trading cards and 2 stickers. In a
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3 0
3 years ago
In the circle below, DB = 22 cm, and m<DBC = 60°. Find BC. Ignore my handwriting.​
Karo-lina-s [1.5K]

Answer:

BC=11\ cm

Step-by-step explanation:

step 1

Find the measure of the arc DC

we know that

The inscribed angle measures half of the arc comprising

m\angle DBC=\frac{1}{2}[arc\ DC]

substitute the values

60\°=\frac{1}{2}[arc\ DC]

120\°=arc\ DC

arc\ DC=120\°

step 2

Find the measure of arc BC

we know that

arc\ DC+arc\ BC=180\° ----> because the diameter BD divide the circle into two equal parts

120\°+arc\ BC=180\°

arc\ BC=180\°-120\°=60\°

step 3

Find the measure of angle BDC

we know that

The inscribed angle measures half of the arc comprising

m\angle BDC=\frac{1}{2}[arc\ BC]

substitute the values

m\angle BDC=\frac{1}{2}[60\°]

m\angle BDC=30\°

therefore

The triangle DBC is a right triangle ---> 60°-30°-90°

step 4

Find the measure of BC

we know that

In the right triangle DBC

sin(\angle BDC)=BC/BD

BC=(BD)sin(\angle BDC)

substitute the values

BC=(22)sin(30\°)=11\ cm

6 0
3 years ago
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