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Kruka [31]
3 years ago
7

What is 2.8 × 104 in standard form?

Mathematics
2 answers:
masya89 [10]3 years ago
5 0

Answer:

291.2

Step-by-step explanation:

VMariaS [17]3 years ago
3 0

Answer:

28000

Step-by-step explanation:

<h2><u>Standard form </u></h2>

2.8 * 10^4

in standard form means

2.8 * ( 10 * 10 * 10 * 10 )

this is because  10 ^4 is interpreted as  ( 10 * 10 * 10 * 10 )

hence 2.8 * 10^4

=<u> 28000</u>

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Twice the difference of three less than a number.
Veseljchak [2.6K]

Answer:

the answer would be 2(3-x)

Step-by-step explanation:

x would be the number that is given and since it says twice than 2 would be outside the parenthesis since the main equation would be inside the parenthesis

3 0
3 years ago
A chemist has 10% and 40% solutions of acid available. How many liters of each solution should be mixed to obtain 120 liters of
kaheart [24]

Answer:

100 liters of  10% solution is used and 20 liters of  40% solution is used

Step-by-step explanation:

Let "X" amount of 10% solution is used. Then the amount of 40% solution used is equal to 120-X

Now

10% of X + 40% of (120-X) = 15% of 120

On solving the above equation, we get

0.1 X + 0.4 (120-X) = 0.15 *120\\0.1 X + 48 -0.4X = 18\\0.3 X = 30\\X = 100liters

Amount of 40% solution used  = 120 -X = 120-100 = 20 liters

100 liters of  10% solution is used and 20 liters of  40% solution is used

7 0
3 years ago
Please help me solve this question will give you braisnlt !
Hoochie [10]

Answer:

fdsfada

Step-by-step explanation:

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5 0
2 years ago
The diameter of a circle is 34 yards. What is the circle's area? Use 3.14 for ​.
barxatty [35]

Answer:

907.46 mm2

Step-by-step explanation:

Area of circle = (¶d^2)/4

d = 34 mm

Therefore

Area A = (3.14 x 34^2)/4

= 907.46 mm2

8 0
2 years ago
Read 2 more answers
What’s 4/5 times 2/3
maxonik [38]

Answer:

8/15

Step-by-step explanation:

When multiplying fractions, simply multiply the numbers straight across. First, multiply the numerators to get 8. Then, multiply the denominators and you'll get 15.

6 0
3 years ago
Read 2 more answers
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