2 years ago

What is 20,700,0000 in standard notation?

Mathematics

1 answer:

alexdok [17]2 years ago

8 0

Answer:

2.07 x 10^4

Step-by-step explanation:

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I NEEP HELP ASAP PLEASE AND THANK YOU

sertanlavr [38]

Answer:

The first answer, 3 times the square root of x squared is correct.

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2 years ago

A square and a circle intersect so that each side of the square contains a chord of the circle equal in length to the radius of

krek1111 [17]

Answer:

Step-by-step explanation:

it is given that Square contains a chord of of the circle equal to the radius thus from diagram

$QR=chord =radius =R$

If Chord is equal to radius then triangle PQR is an equilateral Triangle

Thus $QO=\frac{R}{2}=RO$

In triangle PQO applying Pythagoras theorem

$(PQ)^2=(PO)^2+(QO)^2$

$PO=\sqrt{(PQ)^2-(QO)^2}$

$PO=\sqrt{R^2-\frac{R^2}{4}}$

$PO=\frac{\sqrt{3}}{2}R$

Thus length of Side of square $=2PO=\sqrt{3}R$

Area of square $=(\sqrt{3}R)^2=3R^2$

Area of Circle $=\pi R^2$

Ratio of square to the circle $=\frac{3R^2}{\pi R^2}=\frac{3}{\pi }$

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2 years ago

Last year, Lein earned $1,600 more than her husband. Together they earned $48,100. How much did each of them earn?

Illusion [34]

Lein earned $25,650
Her husband earned $22,450

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2 years ago

-4(2x-3)>-28 please i need this result

Len [333]

-4 (2x - 3) > -28

Divide by -4 on both sides. Since we're dividing by a negative, we need to switch the sign.

2x - 3 < 7

Add 3 to both sides

2x < 10

Divide by 2 on both sides

x < 5

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3 years ago

China issued the largest stamp ever, 210mm Long and 65mm wide. Find the ratio of length to width

lora16 [44]

210 : 65
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42 : 13 is the ratio of 210mm long and 65mm wide
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<span>divide both numbers by 5</span>

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3 years ago