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garri49 [273]
4 years ago
14

In scientific notation, what is the sum of 2.3 times 10^{-3} and 5.4 times 10^{-4}?

Mathematics
1 answer:
matrenka [14]4 years ago
6 0
2,3 \cdot 10^{-3}+5,4\cdot 10^{-4}=\\
2,3 \cdot 10^{-3}+0,54 \cdot 10^{-3}=\\
2,84\cdot 10^{-3}\\
\\
Answer:A
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salantis [7]

The answer you selected is correct

3x - 4y = 16

3x = 4y + 16

x = 4y/3 + 16/3

5 0
3 years ago
Help. it's multiple choice. idk what it is​
kykrilka [37]

Answer:

Barium, Strontium and Beryllium

Explanation:

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8 0
3 years ago
John types 62 words per minute. Which an expression for the number of words he types in m minutes?
andrezito [222]

Answer:

w = 62m

Step-by-step explanation:

We need to make an expression for the numbers of words (w) John types in m minutes.

We know he types 62 words in 1 minute, so 62 is the coefficient of m.

The dependent variable here is w, so that should on the left of the equal sign.

m, on the other hand, is independent, so that's on the right of the equal sign.

So, the expression is w = 62m.

8 0
3 years ago
To make fruit punch for a party, we need 4 1⁄2 gallons of ginger ale, 1 gallon of strawberry juice, 2 3⁄4 gallons of frozen oran
lina2011 [118]

For this case we convert the mixed numbers to fractions:

4 \frac {1} {2} = \frac {2 * 4 + 1} {2} = \frac {9} {2}\\2 \frac {3} {4} = \frac {4 * 2 + 3} {4} = \frac {11} {4}

Now we add the fractions:

\frac{9} {2}+1+ \frac {11} {4} + \frac {1} {8} =

We find the least common multiple of the denominators. The l.c.m is 8, then we divide by each denominator and multiply the result by each numerator.

\frac {36 + 8 + 22 + 1} {8} =\\\frac {67} {8} =

8,375

Thus, the punch recipe implies 8.375 gallons. If we convert to a mixed number we have:

8 \frac {3} {8} gallons

Answer:

8 \frac {3} {8}gallons

4 0
3 years ago
What’s 18x3+12-1x34+13-2x56?
Alina [70]

18 x 3 + 12 - 1 x 34 + 13 - 2 x 56 = 67

<=Work=>

18 x 3 = 54

1 x 34 = 34

2 x 56 = 112

(54) + 12 - (34) + 13 - (112)

66 - 34 + 13 - 112

32 + 13 - 112

45 - 112

= 67

8 0
3 years ago
Read 2 more answers
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