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kumpel [21]
3 years ago
11

What ius the symoble for iron

Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
8 0

Answer:

fe

Step-by-step explanation:

You might be interested in
Solve -3 1/2 = 1/2x + 1/2x + x
Verizon [17]

Answer:

-1.75   I apologize if that is not right but i am 99% sure

Step-by-step explanation:

When you add like terms on the right side you end up with 2x, then all you di is divide both sides by 2 and you end up with -1.75

5 0
4 years ago
A boy's age in ten year time will be four times his age five years ago. Find his present age. ​
Katyanochek1 [597]

Answer:

He is ten.

Step-by-step explanation:

10 yrs old. Go ahead 10 yrs to make 20. Which is four times as much as five years old. (Which is 5 years before 10)

Hope this helps! :)

8 0
3 years ago
Tamara feeds her cat 1/8cup canned food each day and the
zloy xaker [14]

Answer:

1 week=7 days

1/8- canned

rest- dry = 8/8-1/8= 7/8 (1 day)

1 treat (one day)

to find dry food, multiply 7/8 by 7

dry food in a day = 7/8 = 0.875 cup

0.875*7= 6.125 cups a week = 6 and 1/8 cups a week

5 0
3 years ago
Differentiate x^2 e^x logx
zimovet [89]

Product rule:

\dfrac{\mathrm d}{\mathrm dx}(x^2e^x\log x)

=\dfrac{\mathrm d(x^2)}{\mathrm dx}e^x\log x+x^2\dfrac{\mathrm d(e^x)}{\mathrm dx}\log x+x^2e^x\dfrac{\mathrm d(\log x)}{\mathrm dx}

Power rule:

\dfrac{\mathrm d(x^2)}{\mathrm dx}=2x

The exponential function is its own derivative:

\dfrac{\mathrm d(e^x)}{\mathrm dx}=e^x

Assuming the base of \log x is e, its derivative is

\dfrac{\mathrm d(\log x)}{\mathrm dx}=\dfrac1x

But if you mean a logarithm of arbitrary base b, we have

y=\log_bx\implies x=b^y=e^{y\ln b}\implies1=e^{y\ln b}\ln b\dfrac{\mathrm dy}{\mathrm dx}

\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{e^{-y\ln b}}{\ln b}=\dfrac1{b^y\ln b}

\implies\dfrac{\mathrm d(\log_bx)}{\mathrm dx}=\dfrac1{x\ln b}

So we end up with

2xe^x\log x+x^2e^x\log x+\dfrac{x^2e^x}x

=xe^x(2\log x+x\log x+1)

8 0
3 years ago
A triangle has side legnths of 11cm and 9cm.Which could be the value of the third side
lana66690 [7]

You didn't put any answer choices, but the formula for the sides of a triangle is that the two smaller sides have to add up to be GREATER the hypotenuse (the longest side). 11 + 9 = 20, so the value of the third side can be 21 or more.


Hope this helps!

3 0
3 years ago
Read 2 more answers
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