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Nina [5.8K]
3 years ago
8

Which of the folloving statements is the most precise and corred to define perpendicular lines?

Mathematics
1 answer:
svetoff [14.1K]3 years ago
6 0

Answer:C

Step-by-step explanation:

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jamal has 65 quilt patches he makes 2 quilts with 5 rows of 6 patches in each quilt . How many quilt patches will be left over
Hunter-Best [27]
I say 60 because if you multiply the rows and the patches of the 2 quilts you get 60
4 0
3 years ago
Use cramers rule to solve 4x+3y=4 -3x-y=7 show your work
Nataly_w [17]
\left\{\begin{array}{ccc}4x+3y=4\\-3x-y=7\end{array}\right\\\\D=  \left|\begin{array}{ccc}4&3\\-3&-1\end{array}\right|=(4)(-1)-(-3)(3)=-4+9=5\\\\D_x=\left|\begin{array}{ccc}4&3\\7&-1\end{array}\right|=(4)(-1)-(7)(3)=-4-21=-25\\\\D_y=\left|\begin{array}{ccc}4&4\\-3&7\end{array}\right|=(4)(7)-(-3)(4)=28+12=40\\\\x=\dfrac{D_x}{D}\Rightarrow x=\dfrac{-25}{5}=-5\\\\y=\dfrac{D_y}{D}\Rightarrow y=\dfrac{40}{5}=8
8 0
3 years ago
The area of a square photo frame is 100 cm^2 find the length of the photo frame
DanielleElmas [232]

Answer:

length is 10cm

Step-by-step explanation:

all sides are the same length because it's a square 10x10=100

4 0
3 years ago
Read 2 more answers
Need help like now plssss
77julia77 [94]

Answer:

12.56m

<h3>4th answer is correct</h3>

Step-by-step explanation:

\frac{180}{360}  \times 2\pi \: r

\frac{1}{2}  \times 2 \times \pi \times r \\  = 12.56m

5 0
4 years ago
Read 2 more answers
Elmer has a collection of 300300300 fossils. Of these, 21\%21%21, percent are fossilized snail shells.
aleksandrvk [35]
I believe that they typo meant 300 fossils of which 21% are snail shells.

Since % means per one hundred...

300(21/100)=63

Elmer has 63 fossilized snail shells.
3 0
3 years ago
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