Convert 0.00000825 into scientific notation

Answers

Answer 1

Answer:

I believe it's 8.25 x 10-6

Answer 2

Answer:

in scientific notation, we simply leave an number to the left of the decimal dot, so in 0.00000825, we need to move over the dot to 0000008.25 , and for that, we have to move it 6 slots to the right, meaning an exponent of -6, namely 10⁻⁶.

$\bf 0\underline{.000008}25\implies 0000008.25* 10^(-6)\implies 8.25* 10^(-6)$

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If x^(2) - 2 = 2^(2/3) + 2(-2/3) prove that x = 2^(1/3)+2^(-1/3)

Answers

Step-by-step explanation:

x² - 2 = 2^(2/3) + 2^(-2/3)

x² = 2^(2/3) + 2 + 2^(-2/3)

x² = (2^(1/3))² + 2 × 2^(1/3) × 2^(-1/3) +

(2^(-1/3))² (It is in the form of a²+2ab+b²)

x² = (2^(1/3) + 2^(-1/3))²

x = 2^(1/3) + 2^(-1/3)

Two litres of water are poured into an empty rectangular tank of length 25cm and width 20cm.The water completely fills the tank, without it overflowing.
calculate the depth of the tank

Answers

1000 cubic cm = 1 liter

V=WHL
2000 cubic cm=W(20)(25)
2000 cubic cm=W(500)
2000/500 = 4

depth = 4cm

1 litre = 1000 cm³

thus, 2 litre = 2000cm³

volume = lbh

2000cm³ = 25 x 20 x h

2000cm³ = 500 x h

Thus, h = 4 cm.

Thus, the depth of tank is 4 cm

On a trip, you had to change your money from dollars to British pounds. You got 560 pounds for 800 dollars. How many pounds will you get for 300 dollars?

Answers

Answer

210 pounds

Explanation

First, we are going to find the exchange rate from dollars to pounds.

We know form our problem that 800 dollars are 560 pounds. so:

$(560pounds)/(800dollars) =0.7$ pounds per dollar.

Next, we are going to multiply our exchange rate by the number of dollars we want to change, 300:

$300dollars*(0.7pounds)/(dollar) =210pounds$

We will get 210 pounds for 300 dollars

Answer:

210

Step-by-step explanation:

Kevin claims he can draw a trapezoid with three right angles. Is this possible? Explain.

Answers

nope a trapezoid only has two right angles

If julie needs 3 1/4 cups of oatmeal, how many 1/4 cups of oatmeal will she use?

Answers

you should know that 3 1/4 is equal to 13/4 so she should use 13 cups of 1/4 cups :))))
and for finding that you should say:
if I have 3 and 1/4 so is equal to ((3*4)+1)/4= 13/4 :)))
I hope this is helpful
have a nice day

a baseball has the diameter of 3.8 inches, about how many times more volume does a basketball with radius of 4.78 inches have than a baseball

Answers

spheres so
V=(1/3)pir^3
d/2=r
calculate each

baseball
d=3.8
r=d/2=3.8/2=1.9
V=(1/3)pi(1.9)^2
V=(1/3)pi(3.61)
V=1.203333pi in^3

basketball
r=4.78
V=(1/3)pi(4.78)^2
V=(1/3)pi(22.8484)
V=7.616133333pi

how many times larger is basketbal thatn baseball?
baseballV times x=baskeballV
1.203333pi times x=7.616133333pi
dvide both sides by 1.20333333pi
x=6.3291966759002770083102494828032 times

or you could not simplify the fracitons and get
22.8484/3.61 times

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