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Oksi-84 [34.3K]
3 years ago
12

Convert to scientific notation: 0.000000000003071=___x10^_

Mathematics
1 answer:
cestrela7 [59]3 years ago
8 0
3.071 X10^12. if you move the decimal place to the right 12 times it will end up behind the 3.
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Fred buys a video game disk for $8 after a 20% discount. what is the original price?
olga_2 [115]
I believe this is the answer, im so sorry if im wrong

8 dollars is discount
100-20=80 so
8 dollars =80%
1 dollar=20%
80+20=100
8 + 1 = 9

original price=$9

4 0
3 years ago
Can you please help me​
IRISSAK [1]

Answer:

Step-by-step explanation:

1. HI // KL , J is midpoint of  HL     1. Given

2. ∠IHJ ≅ ∠JLK                             2. Alternate interior angles are congruent

3. ∠IJH ≅ ∠KJL                              3. Vertically opposite angles

4. HJ ≅   JL                                     4. Given

5. ΔHIJ ≅ ΔLKJ                              5.  A S A congruent

                                                             (Angle Side Angle)

3 0
2 years ago
I need help plz 8th math
Lemur [1.5K]

Answer:

56°

Step-by-step explanation:

hii!

to solve this, we need to know that the angles of a triangle all add up to 180 degrees.

we are going to make an x equation here.

2x+3x+40=180

5x+40=180

    -40  -40

5x=140

/5   /5

x=28

angle a is 2x, so the answer would be 28*2 which is 56°

hope this helped out :)

8 0
3 years ago
Read 2 more answers
19) Mr. Kelly finds a nice little bank (GOLIATH NATIONAL BANK) to invest the money he made from his
goblinko [34]

Answer:

Step-by-step explanation:

Answer: it will take 17.5 years to double his money in the account.

Step-by-step explanation:

We would apply the formula for determining compound interest which is expressed as

A = P(1+r/n)^nt

Where

A = total amount in the account at the end of t years

r represents the interest rate.

n represents the periodic interval at which it was compounded.

P represents the principal or initial amount deposited

From the information given,

P = $500

A = 500 × 2 = $1000

r = 4% = 4/100 = 0.04

n = 4 because it was compounded 3 times in a year.

Therefore,.

1000 = 500(1 + 0.04/4)^4 × t

1000/500 = (1 + 0.01)^4t

2 = (1.01)^4t

Taking log of both sides, it becomes

Log2 = 4tlog 1.01

0.301 = 4t × 0.0043 = 0.0172t

t = 0.301/0.0172

t = 17.5 years

4 0
3 years ago
What is the factor for 8 and 9
icang [17]

Answer:

1

The common factors of 8 and 9 are 1, intersecting the two sets above. In the intersection factors of 8 ∩ factors of 9 the greatest element is 1. Therefore, the greatest common factor of 8 and 9 is 1.

5 0
3 years ago
Read 2 more answers
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