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nignag [31]
3 years ago
12

Isolate the varible term on one side 3+8× = 4 isolate the constatnate 8x=1 solve for x​

Mathematics
1 answer:
Vanyuwa [196]3 years ago
7 0

Answer:

x = 1/8

Step-by-step explanation:

It seems like you already did most of the work. The last step is to just divide both sides by 8, to get rid of the 8 attached to the x.

so that should yield:

x = 1/8

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Step-by-step explanation:

solve it

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Easy math!!! Do #13 and #14 (#15 optional)<br> Please show work!
Andru [333]
13. Let A = the amount of money in the given time, P = principal amount; the amount of money you start with, T = time in years, R = interest rate, and N = amount of times interest is compounded each year.

The formula for compound interest is:

A = P(1 +  \frac{R}{N} )^{NT}

Now, we find in the information from the description needed to plug in. P = $1000, R = 7% or 0.07, N = 1 time a year, T = 3 years

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14. (x² + 3)(x - 3)(x + 3)

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(x² + 3)(x² - 9)

Then you do the FOIL method again to get:

x⁴ - 9x² + 3x² - 27

And combine like terms for your answer:

x⁴ - 6x² - 27

Number 15 doesn't give you a number to set the polynomial (that results from multiplying those two binomials) equal to so I'm guessing it wants you to set said polynomial equal to zero and solve for x then plug back in. 

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4 0
3 years ago
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Answer:

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Step-by-step explanation:

To find the slope, use

m=\frac{y^2-y^1}{x^2-x^1}

Replace the x and y values with the points.

m=\frac{7-5}{3-(-1)}

Solve.

m=\frac{2}{4}

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After that, find the y-intercept form.

Put the equation in point-slope form.

y-5=\frac{1}{2}(x+1)

Replace x with 0.

y-5=\frac{1}{2}(0+1)

y-5=\frac{1}{2}

Add 5 to both sides.

y=5\frac{1}{2}

Convert to improper fraction form.

The y-intercept is \frac{11}{2}

Now finally, write in slope-intercept form. (y=mx+b)

m is slope, b is the y-intercept.

7 0
2 years ago
Walnuts are 5 dollars a pound. Jack brought p pounds of walnuts and paid $25. Translate the following into a mathematical equati
Travka [436]

Answer:

7.95 per pound.

Step-by-step explanation:

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