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3 years ago

Please help, I can't figure out this graphing stuff. graph y = x/2 - 3

Mathematics

1 answer:

ivanzaharov [21]3 years ago

3 0

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Which angle description represents an angle that is greater than ninety degrees?

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The Awnser is c obtuse angle

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Tìm x<br> a) (x+3)²+(x-2)²=2x²

natta225 [31]

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2 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

Which is bigger 3 yards is 10 feet

77julia77 [94]

1 yard = 3 feet.

3 yards = 3 * 3 = 9 feet

9 feet < 10 feet

Hope that helped =)

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3 years ago

Read 2 more answers

How do I do this please help!

jeka94

Answer:

put the 4x on the top and the negative 3 on the left not the bottom

6 0

3 years ago