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3 years ago

Write an equation for the line shown in the graph

Mathematics

1 answer:

koban [17]3 years ago

7 0

Answer:

y= -x+10

Step-by-step explanation:

ok, so the basic formula is y=mx+b

m=slope and b= the intercept

the line crosses the y-axis at 10, so we know that 10=b. it is a downward going slope, so its negative. the formula for slope is rise/run, or in our case, fall/run. for every 2 it falls, it runs 2. that is -2/2, which can be simplified to -1. looking at the graph , it's hard to comprehend the question at first and it took me multiple times looking at the graph. I hope I helped some!

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Which of the following shows the extraneous solution(s) to the logarithmic equation? log4 (x) + log4(x - 3) = log4 (-7x + 21)

Salsk061 [2.6K]

First join the log4 on the left:

log4( x*(x-3) = log4(-7x+21)

Then x = -7, works: -7*(-10)=70 = -7*(-7)+21

x=-3, 18 = 42, does not work

x=3 0=0 works,

However, when one puts x = -7 in the *original* exression, log4(-7) or log4(-10) do not exist (you know why?). So x= -7 is extraneous.

Now x=3 gives log4(0) on the left and right, which does not exist.

So, C is the answer, both are extraneous. Seem to work but indeed don't work in the *original* equation

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3 years ago

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Artist 52 [7]

Answer:

$16 per pound

Step-by-step explanation:

We want to find the price per pound.

Therefore, we must divide the cost by the pounds.

$\frac{cost}{pounds}$

We know it costs $144 for 9 pounds of pears. Therefore, $144 is the cost and there are 9 pounds.

$\frac{\$144}{9 pounds}$

Divide.

$\$16 /pound$

It costs $16 for each pound of pears.

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The answer is D I know that because I do this all the time

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39+5h+4g-2h i have been trying 2 work this out 4 ages so plz help

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Unless you're given the value of the variables, you can't really solve for anything. The only thing you can do is simplify.

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DaniilM [7]

Answer:

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Step-by-step explanation:

Poorly formatted question.

The given equation is:

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