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swat32
3 years ago
9

Cost of a comic book $3.95 markup 20%

Mathematics
2 answers:
Sergeu [11.5K]3 years ago
5 0
If you mean the price is now 120% of the original, $<span>4.74 (3.95 * 0.8) is the new price.

If you mean the price is now 80% of the original, $3.16 (3.95 * 1.2) is the new price.</span>
Galina-37 [17]3 years ago
3 0
3.95x20=79/100=0.79

3.95
+ 0.79
_____
4.74 is the new price
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Darla bought 0.9 kilogram of red grapes and 0.35 kilogram of green grapes.
madam [21]

keep trying good luck to you

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3 years ago
Solve the following system by any method -8x-8y=0 -8x+2y=-20
iVinArrow [24]
                     \fbox{Solution by using Matrix} 

\text{Linear Equation} = -8x-8y=0 , -8x+2y=-20

\text{Rewrite the linear equations above as a matrix} 

\left[\begin{array}{ccc}8&-8&0\\-8&2&-20\\\end{array}\right] 

\text{Apply to Row2 : Row2 + Row1} 

\left[\begin{array}{ccc}8&-8&0\\-8&-6&-20\\\end{array}\right] 

\text{ Simplify rows} 

\left[\begin{array}{ccc}8&-8&0\\0&1&10/3\\\end{array}\right] 

\text{Note: The matrix is now in echelon form.}\text{The steps below are for back substitution.} 

\text{Apply to Row1 : Row1 + 8 Row2} 

\left[\begin{array}{ccc}8&0&80/30\\0&1&10/3\\\end{array}\right] 

\text{ Simplify rows}  

\left[\begin{array}{ccc}1&0&10/3\\0&1&10/3\\\end{array}\right] 

\text{Therefore, the solution is} 

x= \dfrac{10}{3} \ \text{and} \ \ y=\dfrac{10}{3}
7 0
3 years ago
∠ R and∠ S are complementary. If m ∠ R = 12x - 3 and m ∠ S = 7x - 2, find m ∠ R.
Paha777 [63]

Step-by-step explanation:

<h2>Sum of two complementary angle is 90°</h2><h2 /><h2>so. </h2><h2><R+<S =90°</h2><h2>12x-3+7x-2=90°</h2><h2>19x-5=90°</h2><h2>19x=95°</h2><h2>X= 5</h2>

<h2><R= 60-3=57°</h2>
3 0
3 years ago
If fix)=x2-2 and g(x) = x-3, what is(f•g)(x)?
borishaifa [10]

Answer:

The last option is correct. (f*g)(x) = x² - 5

Step-by-step explanation:

Since is f * g you have to multiply them together.

x² - 2 * x - 3 (x)

Next ust simplify.

x² -5x

6 0
3 years ago
-k^2-(4k-9n)+6n; k= -3 and n= -2
dalvyx [7]

Answer:

\displaystyle -27

Step-by-step explanation:

\displaystyle -[-3]^2 - [4(-3) - 9(-2)] + 6[-2] \hookrightarrow -9 - [-12 + 18] - 12 \hookrightarrow -9 - 6 - 12 \\ \\ \boxed{-27}

I am joyous to assist you at any time.

6 0
3 years ago
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