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Simora [160]
3 years ago
8

If f(x) = + 8, what is f(x) when x = 10? Help

Mathematics
2 answers:
Reptile [31]3 years ago
5 0

Step-by-step explanation:

f(x) = + 8

x = 10?

f(10)= +8

no change

schepotkina [342]3 years ago
3 0

Answer:

I think it is 5

Step-by-step explanation:

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Solve for b: y = mx + b<br> +mx + mx<br> y + mx = b
Kruka [31]

Answer:

Here's what I got. First of all, did you meant y=mx+b+mx+mxy+mx=b, because that's undefined, or did you meant y=mx+b+mx+mx, which is b=−3mx+y.

4 0
3 years ago
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A karat equals 1/24 part of gold in an alloy [ eg 9 karat gold is 9/24 gold]. How many grams of 9 karat gold must be mixed with
irinina [24]
This is a mixture problem.

Let the 9 karat gold to be mixed be x. The 18 karat would weight (200 - x). Since the total = 200g.

mass1 * karat1 + mass2*karat = total mass * total carat

Let mass1 be x g.          mass 2 would be = (200 -x)
karat 1 = 9                    karat 2 = 18 

Total mass = 200g.
Total karat = 14.

9*x  + 18*(200 -x) = 14*200

9x + 18*200 - 18*x = 14*200

18*200 + 9x - 18x = 14*200

3600 - 9x = 2800

3600 - 2800 = 9x

800 = 9x

9x = 800

x = 800/9

x ≈ 88.89

Therefore 88.89 grams of 9 karat gold must be mixed.
7 0
3 years ago
Can someone answer this what is 3/4 times 3/6 in simpilest form
schepotkina [342]

Answer:

\large\boxed{\dfrac{3}{8}}

Step-by-step explanation:

\dfrac{3\!\!\!\!\diagup^1}{4}\times\dfrac{3}{6\!\!\!\!\diagup_2}=\dfrac{1}{4}\times\dfrac{3}{2}=\dfrac{1\times3}{4\times2}=\dfrac{3}{8}

4 0
3 years ago
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The Temperature started out at 92C in the morning and went down to -13C at noon. It stayed at that temparature for six hours and
ioda

the tempayure was at six because it was at 92c and went down to -13c then rose 7c so that means it was at 6 by 6 a.m.

7 0
3 years ago
A consumer affairs investigator records the repair cost for 4 randomly selected washers. A sample mean of $64.26 and standard de
Mashutka [201]

Answer:

Critical value: z = 1.28

The 80% confidence interval for the mean repair cost for the washers is between $46.487 and $82.033.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.80}{2} = 0.10

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha

So it is z with a pvalue of 1-0.1 = 0.9, so z = 1.28

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

So

M = 1.28*\frac{27.77}{\sqrt{4}} = 17.773

The lower end of the interval is the mean subtracted by M. So 64.26 - 17.773 = $46.487.

The upper end of the interval is M added to the mean. So 64.26 + 17.773 = $82.033.

The 80% confidence interval for the mean repair cost for the washers is between $46.487 and $82.033.

7 0
3 years ago
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