Mathematics Middle School

Identify which numbers are written correctly in scientific notation and which are not.
7.8 x 10^1
10.3 x 10^-8
3.5 x 8^4
3 x 10^6
2.12 x 10^-4
3.4 x 10^8
0.18 x 10^5
70 x 10^-9

Answers

Answer 1

Answer:70×10^-9

0.18×10^5

10.3×10^-8

Are not written correctly in scientific notation

Step-by-step explanation:they are not written correctly because a number whose absolute value is greater than or equal to 1 and 10 multiplied by an integer per of 10. So for short there either lower than 1 or higher than 10 and need to be between to be scientific notation. I hope this helped you

Answer 2
...........70x10^-9............

Related Questions

Kristen paid $39 for 60 cans of corn. How much did she pay per can?

Answers

Answer:

.60 per can

Step-by-step explanation:

39 dollars divided by 60 cans

The ratio of the amount of money that Kristen paid to the number of cans gives the amount per can thus it will be $0.6 per can.

What are the ratio and proportion?

The ratio is the division of the two numbers.

For example, a/b, where a will be the numerator and b will be the denominator.

Proportion is the relation of a variable with another. It could be direct or inverse.

As per the given,

Kristen paid $39 for 60 cans of corn.

Ratio of the amount to the number of cans,

39/60 = $0.6 per can

Hence "The ratio of the amount of money that Kristen paid to the number of cans gives the amount per can thus it will be $0.6 per can".

For more information about ratios and proportions,

brainly.com/question/26974513

#SPJ2

Solve the equation using inverse operations. Check your solutions. In your final answer, include all of your work.
-x^2 = -36

Answers

Answer:I think it is 18

Step-by-step explanation:

Beacause 2x18+36

The answer is 6, divide both sides by -1 to get x^2 on the left and 36 on the right, x=6

Your grandma gave you a $100 gift card for your birthday. After you used it the first time, the balance went down to $91.50. You love your order so much that every time you go, you order the same thing. Use an explicit formula to find the value of the card after 6 trips to Whataburger. You must use Algebra to solve.

Answers

Answer is m=8.50x ! Hope this helps
42.5 is the balance left

Which answer choice represents an equivalent number sentence that uses the associative property to rewrite "(5 + 2) + -6"?
A. 5 + 2 + 6
B. 5 + [2 + (-6)]
C. 5 + (-4)
D. 1

Answers

The answer for this question is letter B
The answer of this question will be A

the planet jupiter has an average distance of about 0.00008 LIght years from the sun. What is this distance in scientific notation SHOW YOUR WORK

Answers

Answer :The planet Jupiter

Step-by-step explanation:  It has an average distance from the sun of about  

4.837

×

10

8

. The planet Venus average distance from the sun of about  

6.72

×

10

7

On average, how much farther from the sun is Jupiter than Venus?

The answer is 8^5 which is eight to the fifth power. If you move the decimal point over five times. Because to make the answer into scientific notation you have to have a number that is less than ten and greater than one. Hope this helps you understand scientific notation better. Have a great day and good luck

is 8 4/9 a rational number

Answers

Answer:

8 4/9 is rational

It is rational because I dont know why but I just know its rational

Answer:

Yes, because an integer is being divided by another integer.

Step-by-step explanation:

A large bottle of juice contains 500 milliliters of juice. A medium bottle contains 70% as much juice as the large bottle.

How many milliliters of juice are in the mediun bottle.

Answers

I think it is 350


STEP BY STEP: what I did was find 70% of 100 that is 70 then u multiply 70 buy 5 to get 350

Answer:

350

Step-by-step explanation:

70% of 500 is 350

PLEASE ANSWER ASAP!!!!

Answers

The answer is -1 1/4 in decimal it would be -1.25
Hope it helps!

If b = 3, then b -2 is equivalent to _____.

a. -6
b. 1/9
c. 9
d. -9

Answers

Answer:  1/9

Wherever you see 'b', replace it with 3, since b = 3

So,

b^(-2) = 1/(b^2)

b^(-2) = 1/(3^2)

b^(-2) = 1/9

The answer would be B

How do the 8s in 6.58 and 47.816 compare?


A. The value of the 8 in 6.58 is 1,000 times the value of the 8 in 47.816.


B. The value of the 8 in 6.58 is 10 times the value of the 8 in 47.816.


C. The value of the 8 in 6.58 is 110 the value of the 8 in 47.816.


D. The value of the 3 in 6.58 is 11,000 the value of the 8 in 47.816.

Answers

Answer:

Step-by-step explanation:vjhgbjyhb

Kyle drives 330 miles on 15 gallons of gas. How many miles per gallon did Kyle get?

Answers

Answer:

the answer would be 22 miles per gallon

Step-by-step explanation:

if we solve it as 330/15 since Kyle drove 330 miles on 15 gallons, our answer would end up being 22 miles per gallon

Answer is 22 miles per gallon.

please just help me soon!

Answers

In this question, the algebra equation is a[3(5b - c)]. Since a = 1.6, b = 2, and c = 5, we would replace the equation into 1.6[3((5)(2) - 5)).

With this equation, the answer will be 24
Answer: 24

Step by Step Explanation:
Since we know what our variables are, we will plug in 1.6 for a, 2 for b, and 5 for c.

1.6[3(5(2) - 5)]

Now we solve and work from the inside out!

1.6[3(10 - 5)]

1.6[3(5)]

1.6 • 15

= 24

So our answer is 24!

Hope this helped! :3

If 1x=2 then what does2x=?

Answers

Answer: 4

Step-by-step explanation:

X is established as 2 with the first equation

Answer:

4 I believe

Step-by-step explanation:

if 1x=2

  2x=4

  3x=6

multiply by 2 each time

A car cruises at a constant rate of 50 miles per hour. How much time will it take to go to 600 miles?

A. 10 hr.
B. 12 hr.
C. 16 hr.
D. 20 hr.

Answers

It will take 12 hours to go 600 miles so b
It will take 12 hour
Step by step
Time = distance /speed
= 600/50 = 12

May someone help me I only have a few min-

Answers

Answer:

less than one pound this is easy

Step-by-step explanation:

Solve for X
X=..........................

Answers

Answer:

(3x -5)°+ (2x- 15)°=180°[sum of co- Interrior angles of a triangle is 180°]

or, 3x- 5 + 2x - 15=180°

or,5x - 20 = 180°

or, 5x = 180°+20

or, x = 200÷ 5

•°•x = 40°

Answer:

X = 40

Step-by-step explanation:

3x + 2x -5 -15 = 180

5x + -20 = 180

then u add 20 on both sides

5x + 0 = 200

ya the 0 is not necessary but I was showing u add 20 on both sides lol

then u divide 5 on both sides to get the x by itself

x = 40

Hope this helps dude ^-^

Please explain your reasoning

Answers

Answer:

0.13

Step-by-step explanation:

Answer:

352 yds/min

Step-by-step explanation:

Hope this helps! Please consider making me brainliest!

Help please and ill ask more questions to see who will get the brainiest :)

Answers

Answer:

A: How much money did you save? $1.92

B: What price did you pay? $3.58

Answer:

a=$1.93 b=$3.57

Step-by-step explanation:

Which of the following pairs of numbers has a GCF of 1?

A. 30 and 70
B. 12 and 30
C. 16 and 21
D. 24 and 44

Answers

Answer:

Step-by-step explanation:

Must be 16 and 21 because we can see

30 and 70 has 10 as factor

24 and 44 has 2 as factor

12 and 30 has 2 as factor and all those factors are greater than one

Answer:

16 and 21

Step-by-step explanation:

we can see

30 and 70 has 10 as factor

24 and 44 has 2 as factor

12 and 30 has 2 as factor and all those factors are greater than one

A scale drawing for an apartment is shown below. In the drawing, 4cm represents 5cm. Assuming the bedroom is rectangular, find the area of the real bedroom.

Answers

20 cm
Just took the test

Oof Oof Oof Oof Oof Oof Oof

Answers

A has to be 0 because it hasn’t started yet and b is 40 and c is 0 because it went down and so is d and e is at 60

Answer:

oof

Step-by-step explanation:

a meteorite found in the united states weigh 7/10 as much as one found in mongolia. the meteorite found in monoglia weighs 22 tons. how much does the one in the united states weigh?

Answers

I only wrote this to get points

Answer:

31.42

Step-by-step explanation:

What is 7.8×105 hours in days?


3.250×104 days

1.872×104 ​ days

1.872×108 ​​ days

3.250×106 ​​ days

Answers

B.) 3.250*106 days

I figured it out!! Yay!

You take 7.8 and divide it by 24 which will get you 0.325

In order to get it match one of the options, multiply it by 10 (which will add 1 to 105!) Leaving you 3.25*106

Answer:

3.250×10^4 days

Step-by-step explanation:

evaluate the expression when: A=2, B=1, C=4
A+6/CB

Answers

Answer:

Imma rewrite the question as: 2+6/41

2+6=8

i think since the letters were next to each other u multiply?? Is so...:

4x1=4

8+4=12

=12

but if u add the letters next to eachother....

2+6=8

4+1=5

8+5=13

=13

or if u use “41” as a whole number and add it in..:

2+6=8

8+41=49

=49

Step-by-step explanation:

2+6/4x1
8/4
4 into 8 =2
Answer is 2

On a cold winter night, it snowed all night long. The next morning, you shoveled 1/5 of the driveway in 2/5 of an hour. How many hours will it take to shovel the driveway?

Answers

Answer:

10/5 of an hour. (☞ﾟヮﾟ)☞  also can be written as 2 hours

Step-by-step explanation:

Shoveling 1/5 of the driveway = 2/5 hours

Shoveling the entire driveway (5/5) would take 2/5 (the time it takes to shovel 1/5) times/multiplied by 5 (5/5 is the entire driveway)

2x5 is 10, so it would take 10/5 hours, which can be reduced to 2/1 or 2 hours to shovel the entire driveway.

Can someone please help me.

Answers

Question 2 is 855.
Question 3 is 96,000
Question 4 is 289 billion
Question 5 is 9,011
Question 6 is 632
2: 855
3: 96,000
4: 289 billion
5: 9011

Graph the function f(x) = 5(0.21)x. (15 pts)

A.) an exponential graph decreasing from the left and crossing the y axis at 0 comma 21
B.) an exponential graph decreasing from the left and crossing the y axis at 0 comma 5
C.) an exponential graph decreasing from the left and crossing the y axis at 0 comma 18
D.) an exponential graph decreasing from the left and crossing the y axis at 0 comma 8

Answers

Answer: c

Step-by-step explanation:

Answer:

B or D

Step-by-step explanation:

i can say its hard to tell with how its worded

i hope this helped no gurantee only cause i dont really get it but i tried

Help with 8th-grade middle school math SHOW WORK

Answers

Answer:

40

Step-by-step explanation:

R CORRECT. srry it wouldn't lemme type in the comment. welp last one. what i the area of the trapezoid

Answers

Answer:

1122 cm

Step-by-step explanation:

Answer:

112

Step-by-step explanation:

Grace paid $9.25 for 2.8 pounds of pretzels. About how much did she pay for a pound of pretzels?
A.$2.00
B. $3.00
C. $4.50
D. $5.00

Answers

B. $3.00

Because if you round 2.8 to 3 and round 9.25 and get 9 and divide 9 by 3 you get 3 so it’s closest to B.

Answer:

It should be B.

Step-by-step explanation:

You have to divide 9.25/2.8 and you'll get $3.30. I didn't see that answer, so I rounded and got $3.00.

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