The starting prices for both of the books are at 100%, and taking 25% from the second book it would be 75%. You will have 75% of each value of the books while they're on sale, which you can convert to decimal .75. Multiply this decimal by each of the books' values to figure out how much they'll be on sale and then add them, which would total up to 36 + 18= 54$. By dividing this value by the book's original value, 60$, would equal it to .9. Converting the .9 to a percent and subtracting it by 100%, It's reduced by 10%.

7 0

3 years ago

Simplify this expression (xy^4)^6

Slav-nsk [51]

x^6y^24

Hope it help

6 0

3 years ago

Read 2 more answers

AC=36cm, and BC=27cm. Verify that DE\\AB.

emmasim [6.3K]

Answer:

$\overline {DE} \parallel \overline{AB}$ because $\frac{EC}{DC} = \frac{AC}{BC}$ .

Step-by-step explanation:

According to the Theorem of Thales and definition of proportionality, $\overline {DE} \parallel \overline{AB}$ if and only if $\frac{EC}{DC} = \frac{AC}{BC}$ . If we know that $EC = 15\,cm$ , $DC = 20\,cm$ , $BC = 36\,cm$ and $AC = 27\,cm$ , then we have the following result:

$\frac{15\,cm}{20\,cm} = \frac{27\,cm}{36\,cm}$

$\frac{3}{4} = \frac{3}{4}$

Hence, $\overline {DE} \parallel \overline{AB}$ .

4 0

3 years ago

Write the equation of a line in point-slope form that has a slope of -1 and passes through the point (-2, 5).

Angelina_Jolie [31]

$\bf \begin{array}{lllll}
&x_1&y_1\\
% (a,b)
&({{ -2}}\quad ,&{{ 5}})\quad 
\end{array}
\\\\\\
% slope = m
slope = {{ m}}= \cfrac{rise}{run} \implies -1
\\\\\\
% point-slope intercept
y-{{ y_1}}={{ m}}(x-{{ x_1}})\qquad 
\begin{array}{llll}
\textit{plug in the values for }
\begin{cases}
y_1=5\\
x_1=-2\\
m=-1
\end{cases}\\
\textit{and solve for "y"}
\end{array}\\
\left. \qquad \right. \uparrow\\
\textit{point-slope form}$

8 0

3 years ago

Read 2 more answers