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3 years ago

Write 0.000739 in scientific notation.

Mathematics

2 answers:

jek_recluse [69]3 years ago

6 0

Answer:

7.39 × 10-4^-4

Step-by-step explanation:

fenix001 [56]3 years ago

5 0

Answer:

7.39 × 10-⁴

Step-by-step explanation:

m × 10ⁿ, where m is a number between 1 and 10 ( 1 ≤ |m| < 10 ) and the exponent n is a positive or negative integer.

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Find the diameter of a circle that has an area of 254.34mm2

zvonat [6]

To find the diameter, divide the area(254.34) by pi(3.1415) and then square the quotient

$\frac{254.34}{3.1415} = 80.95$
$\sqrt{80.95} = 8.99$
That is the radius now just times that by 2 so 2 x 8.99 = 17.98

Now I have a felling the might be wanting 18 because 8.99 is so close to 9 and this is also true for 80.95. They probably want 80.95 = 81, which the square root of that is 9, which is the radius and if you times that by 2 the diameter would equal 18

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3 years ago

Christine's middle school has a total of 900 students and 45 teachers . The local high school has 110 teachers & a student-t

qaws [65]

Answer:

2,200 students

Step-by-step explanation:

To find the number of students, create a proportion which is two equal ratios. Since the middle school and the high school are proportional then they have equal ratios.

$\frac{students}{teachers}= \frac{900}{45}=\frac{x}{110}$

Solve for x by cross multiplying by multiplying the numerator and denominator of each fraction.

900(110) = 45(x)

99,000=45x

2,200 = x

5 0

3 years ago

Which situation can be represented by the equation 114×6=712?

maria [59]

Answer:

There are 114 students in Westville middle school. Each of them would like to bring 6 cookies to have a party. How many total cookies will be in the school if all the kids brought cookies?

712 total cookies!

114x6=712

Glad I could help!!

8 0

3 years ago

3r²-6-3r=0 i have to use quadratic formula but i dont get how to imput it

yKpoI14uk [10]

Answer:

r = 2

r = -1

Step-by-step explanation:

So first, we need to get this is order of: ax^2 + bx + c

3r^2 - 6 - 3r

3^2 - 3r - 6

the formula is: -b ± √b^2 -4ac/2a

"ax^2 + bx + c" = "3^2 - 3r - 6"

a = 3

b = -3

c = -6

-b ± √b^2 -4ac/2a

-(-3) ± √(-3)^2 -4(3)(-6)/2(3)

3 ± √9 + (-12)(-6)/6

3 ± √9 + (72)/6

3 ± √9 + 72/6

3 ± √81/6

3 ± 9/6

3 - 9/6

-6/6

-1 = r

3 + 9/6

12/6

2 = r

Formula down below --

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2 years ago

Nuan gives her friend Saúl a lottery ticket for his birthday. The ticket cost Nuan

PSYCHO15rus [73]

Answer:

both statements are correct

Step-by-step explanation:

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2 years ago