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jekas [21]
3 years ago
9

I got an answer for a problem but I want to know why a 7 was added to the end of it pls help. Question:

dn.net/?f=%287%2A10%5E%7B-8%7D%20%29%2B%283.48%2A10%5E%7B-5%7D%20%29" id="TexFormula1" title="(7*10^{-8} )+(3.48*10^{-5} )" alt="(7*10^{-8} )+(3.48*10^{-5} )" align="absmiddle" class="latex-formula">
Answer: 3.487*10^{-5}
Mathematics
2 answers:
Rom4ik [11]3 years ago
8 0

Answer:

because 7 needs to be there ...? for the probnem to work

Step-by-step explanation:

poizon [28]3 years ago
8 0

Answer:

In order to have the answer, 3.487×10^-5, you have to make the power of 10 into -5 :

7×10^-8 = 0.007×10^-5

e.g.

1×10^-2 = 0.01

1×10^-4 = 0.01×10^-2

(take note: when the power is negative, you have to move to the left)

Then you can solve it :

0.007×10^-5 + 3.48×10^-5

= 10^-5(0.007 + 3.48)

= 10^-5(3.487)

= 3.487×10^-5

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Shauna saw 30 fish. If the number of fish she saw was 6 more than twice the number of clams, which equation could she use to fin
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4 0
3 years ago
How do you do this problem?
vivado [14]
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6 0
3 years ago
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The front row in a movie theatre has 23 seats. If you were asked to sit in the seat that occupied the median position, in which
Harrizon [31]

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12

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For an even number of seats, the same method doesn't work as well!  If there are 14 seats, for example,  (1 + 14) / 2 = 15 / 2 = 7.5,  and if you sit in "seat" 7 and a half, it will be awkward!

4 0
2 years ago
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the numbers of girls in the choir is 4 times the number of boys in the choir .the total number of students is 60..how many girls
Inessa05 [86]
First, make up some variables to represent the number of Girls and Boys in the choir.  

B = number of boys
G = number of girls

You know that there are 4 times as many girls in the choir as boys.  Therefore, the equation you can write is:
\frac{B}{G} =  \frac{1}{4}

If you cross-multiply, then you get the simplified equation:
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Intuitively this makes sense since if you multiplied the number of boys in the class by 4, that would be equal to the number of girls you have.

Now, we know that the total class size is 60. So girls plus boys equals 60:
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To solve the equation, replace the G in this equation with the replacement you found before, 4B.
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The number of girls you have is 48.

6 0
3 years ago
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