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3 years ago

Can you please help me with number 2

Mathematics

2 answers:

mafiozo [28]3 years ago

8 0

If that little dot after the '1' is a comma, then you're correct. Melting doesn't change the mass.

tatuchka [14]3 years ago

7 0

Good job you are correct you figured it out

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What is 21m-49n factored using GCF

balandron [24]

For the GCF the answer is 7

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3 years ago

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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

Find the 107 term of the sequence -9, -5, -1, 3, 7, ....

Alex17521 [72]

the sequence is 4n-13, so substitute 107 into n and it will become 4(107)-13 =415

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3 years ago

1. The dimensions of Mr. Bell's living room are 10 feet x 8 feet x 2 feet, and the dimensions of his kitchen are 20 feet x 2 fee

romanna [79]

Answer:

more detail

Step-by-step explanation:

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3 years ago

Write an equation of the perpendicular bisector of the segment with the endpoints (8,10) and ( -4,2).

ale4655 [162]

Answer:

The required equation is:

$y = -\frac{3}{2}x+9$

Step-by-step explanation:

To find the equation of a line, the slope and y-intercept is required.

The slope can be found by finding the slope of given line segment. A the perpendicular bisector of a line is perpendicular to the given line, the product of their slopes will be -1 and it will pass through the mid-point of given line segment.

Given points are:

$(x_1,y_1) = (8,10)\\(x_2,y_2) = (-4,2)$