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Anit [1.1K]
3 years ago
10

Elizabeth's bathroom is 8 feet by 6 feet. She is laying square tiles with a side length of 3 inches. How many tiles does she nee

d?
Mathematics
1 answer:
Andrew [12]3 years ago
3 0

Answer:

768 tiles

Step-by-step explanation:

8ft = 96 in

6ft = 72 in

96(72) = 6912

3(3) = 9

6912/9 = 768

768 tiles

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A rectangle has a length at most two more than seven times the width. If the perimeter is less than or equal to 52 units, find t
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7x + 2 \leqslant 52
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3 years ago
How do I solve this
sdas [7]
\bf \textit{difference of squares}
\\ \quad \\
(a-b)(a+b) = a^2-b^2\qquad \qquad 
a^2-b^2 = (a-b)(a+b)\\\\
-------------------------------\\\\
\cfrac{2x}{x^2+2x-24}-\cfrac{x}{x^2-36}\quad 
\begin{cases}
x^2+2x-24\implies (x+6)(x-4)\\
--------------\\
x^2-36\implies x^2-6^2\\
(x-6)(x+6)
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\begin{array}{llll}
\textit{thus our LCD is}\\
(x-6)(x+6)(x-4)
\end{array}
\\\\\\
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3 0
3 years ago
What is the determinant of this matrix:
vodka [1.7K]

Answer:

-56

Step-by-step explanation:

Formula to get determinant is::

\left[\begin{array}{ccc}a&b\\c&d\end{array}\right] = ad-bc

0(0)-8(7)

0 - 56

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6 0
2 years ago
Read 2 more answers
Please someone help me and do not just write anything explain thank you . use the information provided to write the vertex form
notka56 [123]
Ok, so user says that it should be solve for vertex not vertex form
(x,y)
to find the vertex of
y=ax^2+bx+c

the x value of the vertex is -b/2a
the y value is found by plugging in the x value for the vertex back into the original equation and evaluating


y=-2x^2-12x-28
a=-2
b=-12

xvalue of vertex is -(-12)/(2*-2)=12/-4=-3

x value of vertex is -3

plug backin for x
y=-2x^2-12x-28
y=-2(-3)^2-12(-3)-28
y=-2(9)+36-28
y=-18+8
y=-10

yvalue is -10
x value is -3

vertex is (-3,-10)
5 0
3 years ago
Given: PA = PB, then PC =
svlad2 [7]
Based on the picture, PC = PD
6 0
3 years ago
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