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2 years ago

Determine the x coordinate of the center of a circle if its diameter's endpoints are located at (7,-2) and (9,5).

Mathematics

1 answer:

telo118 [61]2 years ago

6 0

Answer:

(2,8)

Step-by-step explanation:

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ΔABC and ΔXYZ are similar triangles. The lengths of two sides of each triangle are shown. Find the lengths of the third side of

Norma-Jean [14]

Answer:

b=9

x=5.5

Step-by-step explanation:

find the common ration

AB is 6, and XY is 3 (they are the corresponding sides)

ratio is 2 to 1 (6/3=2/1)

AC corresponds with YZ

XY is 4.5 so b is 4.5*2=9

ZY corresponds with CB

CB is 11, since XYZ is the smaller divide by 2 instead of multiplying by 2

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3 years ago

Libby has a square box of chocolate. The chocolates are arranged evenly in rows. Each chocolate piece in the box takes up one sq

ladessa [460]

There are 8 chocolate peices in one row of libby's box.

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3 years ago

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Find the period of the function. y=-3 cos 1/4x a. pi/4 b.-3 c.3pi/4 d.8pi

timofeeve [1]

The answer is 1/4 = 2pi * 1/T, so T = 4*2pi = 8pi
so it is d.8pi

5 0

3 years ago

Please help !!!!!!Asap!!

emmainna [20.7K]

Answer: x=7, EF=12, FG=15

Step by Step:
(4x-16) + (3x-6) = 7x-22
7x-22=27
7x=27+22
7x=49
x=7

4(7)-16= 12
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6 0

3 years ago

Which vector matrix represents the reflection of the vector <-1,5> across the line x = y

Arturiano [62]

Answer:

$V = \left[\begin{array}{ccc}5&-1\end{array}\right]$

Step-by-step explanation:

We want to reflect this 2x1 vector on the line y = x.

To make this reflection we must use the following matrix:

$R=\left[\begin{array}{cc}0&1\\1&0\\\end{array}\right]$

Where R is known as the reflection matrix on the line x = y

Now perform the product of the vector <-1,5> x R.

$\left[\begin{array}{ccc}-1\\5\end{array}\right]x\left[\begin{array}{ccc}0&1\\1&0\end{array}\right]\\\\\\\left[\begin{array}{ccc}-1(0) +5(1)&-1(1)+5(0)\end{array}\right]\\\\\\\left[\begin{array}{ccc}5&-1\end{array}\right]$

The vector matrix that represents the reflection of the vector <-1,5> across the line x = y is:

$V = \left[\begin{array}{ccc}5&-1\end{array}\right]$

6 0

3 years ago