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WINSTONCH [101]
3 years ago
7

What is 30,000 expressed in scientific notation?

Mathematics
2 answers:
Troyanec [42]3 years ago
6 0
It’s b !!!!!!!!!!!!!!!!!!!!!!!!!
4vir4ik [10]3 years ago
3 0

Answer:

B

Step-by-step explanation:

Hope this helps : )

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deandre saves rare coins. he starts his collection with 14 coins and plans to save 3 coins each month. write an equation to repr
bekas [8.4K]

Answer:

equation: y = 3x + 14

number of coins after 30 months: 104 coins

Hope this helps :)

5 0
3 years ago
Complete the table.
Vilka [71]

Answer:

160

Step-by-step explanation:

Since you multiply 0.25 by the original number you would just divide it by the sale price. 0.25 is from 25% since you move the invisible decimal after the last number over two times to the left. But with the sale price you divide 40 by 0.25 and get 160 as your answer.

6 0
4 years ago
What is the Percentage of 23000?
tankabanditka [31]

Answer:  0.00435 If you do it by one.

                0.0087 if you do it by two. And-

                 0.01304 if you do it by three.

              I really hope this helps have a good day :))  (pls make brainliest im trying to each a goal!)

Step-by-step explanation:

3 0
3 years ago
A chemist has 200 mL of a 10% sucrose solution. She adds x mL of a 40% sucrose solution. The percent concentration, y, of the fi
user100 [1]

Answer:

The chemist needs to add 400mL of 40% solution.

Step-by-step explanation:

The equation

y=\frac{0.1(200)+0.4x}{200+x} *100

gives the percent concentration y of the final mixture, when x mL of the 40% solution are added.

Now we are asked, how many milliliters x of the 40% solution should the chemist add to get final percent concentration y=30; this is just a matter of solving the equation

30=\frac{0.1(200)+0.4x}{200+x} *100

and we solve it the following way:

30=\frac{0.1(200)+0.4x}{200+x} *100\\\\0.3 =\frac{0.1(200)+0.4x}{200+x}\\\\0.3(200+x)=0.1(200)+0.4x\\\\60+0.3x=20+0.4x\\\\40=0.1x\\\\x=\frac{40}{0.1} \\\\\boxed{x=400\:mL}

Thus, the chemist needs 400mL of 40% solution to get 30% concentration of the final mixture.

7 0
4 years ago
At midnight, the temperature was 30 degrees Fahrenheit. By 6:00 am, IT had dropped 5 degrees Fahrenheit and by noon, it had incr
Allisa [31]
At noon, the temperature was 36 degrees. At midnight, the temperature was 30 degrees. By 6:00 am it drooped 5 degrees. Since it dropped 5 degrees, you subtract 5 from 30, which equals 25. It then increased by 11 degrees. Since the temperature increased, you add 11 to 25, which equals 36. At noon, the temperature was 36 degrees.
4 0
3 years ago
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