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const2013 [10]
4 years ago
12

Why is the answer A? Plz explain.

Mathematics
1 answer:
Sveta_85 [38]4 years ago
4 0
\bf f(x)=\cfrac{1}{2}x+a\\\\
-------------------------------\\\\
\stackrel{x=a}{f(a)}=\cfrac{1}{2}(a)+a\implies 3=\cfrac{1}{2}(a)+a\implies 3=\cfrac{a}{2}+a\implies 3=\cfrac{a+2a}{2}
\\\\\\
6=a+2a\implies 6=3a\implies \cfrac{6}{3}=a\implies \boxed{2=a}\\\\
-------------------------------\\\\
f(8)=\cfrac{1}{2}(\stackrel{x}{8})+(\stackrel{a}{2})\implies f(8)=\cfrac{8}{2}+2\implies f(8)=6
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Can somebody help me with this?
Igoryamba
C. 35, it would otherwise be seen as 35/1
Hope this helps
3 0
4 years ago
Write each decimal using a negative exponent.
leonid [27]

Answer:

The answer to your question is below

Step-by-step explanation:

When using scientific notation,

- when we move the decimal point to the right, the power will be negative.

- when we move the decimal point to the left, the power will be positive.

a) 0.00001    move the decimal point 5 places to the right   1 x 10⁻⁵

b) 0.001         move the decimal point 3 places to the right   1 x 10⁻³

8 0
4 years ago
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Help it’s confusing
noname [10]

Answer:

I think is C like I said not quite sure...

8 0
3 years ago
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How do you solve 10(z-2)=1+4
tamaranim1 [39]

I'm assuming you want us to solve for the unknown variable z

10(z-2)=1+4

Combine like terms on the right side

10(z-2)=5

Use the distributive property on the left side

10z-20=5

Add both sides by 20 to cancel out the "-20" on the left side

10z=25

Divide both sides by 10

z=2.5

That is the value of the known variable, z, in this equation. Let me know if you need any clarifications, thanks!

~ Padoru

6 0
3 years ago
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astra-53 [7]
It's 0.00005 so yeah you're correct
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3 years ago
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