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4 years ago

10[4 times 10 divided by (6^2-4^2) +1]

Mathematics

1 answer:

Genrish500 [490]4 years ago

8 0

Answer:

Step-by-step explanation:

10[4 times 10 divided by (6^2-4^2) +1]

First you would multiply 6 x 6 = 36

10[4 times 10 divided by (36-4^2) +1]

Second you would multiply 4 x 4 = 16

10[4 times 10 divided by (36-16) +1]

Third you would subtract 36 - 16 = 20

10[4 times 10 divided by 20 +1]

Fourth you would add 20 + 1 = 21

10[4 times 10 divided by 21]

Fifth you would multiply 4 x 10 = 40

10[40 divided by 21]

Sixth you would divide 40 divided by 21 = 1.90

10[1.90]

Seventh you would multiply 10 x 1.90 = 19

Your answer would be 19.

Hope this helps. I am sorry if you get this wrong.

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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

6. 1 68 61 2 m21 = 3 m22= m23 -

Advocard [28]

1 = 51

2= 61

3= 29

Step-by-step explanation:

1) 61+68= 129

180-129= 51

2) 61 is across it so they have the same number

3) 61 +90= 151

180-151= 29

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3 years ago

You get a large ice-cream cone for $2.99 and a bottle of water for $1.07 . You pay with a 10 -dollar bill. How much change will

Igoryamba

10 - 2.99 = 7.01 and 7.01 - 1.07 = 5.94 so you will get 5.94 in change

5 0

3 years ago

Read 2 more answers

What’s the answer to six plus negative 3

Alik [6]

6 + (-3) would be the same as just saying 6-3 which would be equal to positive 3

6 0

3 years ago

QUICK can anyone help me. Big points for right answers.

klemol [59]

No13.
Answer:
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3 years ago