3 years ago

Brainliest!!!! Someone help me please!!!!

Mathematics

1 answer:

kondaur [170]3 years ago

6 0

Answer:

its b

Step-by-step explanation:

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Pavel [41]

X 0 y was 30

at x 12 y is about 55

12-0 = 12

55-30 = 25

25/12 = 2.08 inches per year average

so answer should be D

5 0

3 years ago

A line passes through the points (1, 4) and (5, 8). What Is the linear equation of this line?

natali 33 [55]

Answer liner

Step-by-step explanation:

8 0

2 years ago

Use matrix inversion to solve the collection of systems of linear equations. HINT [See Example 4.] (a) −x − 4y + 2z = −10 x + 2y

omeli [17]

Answer:

Step-by-step explanation:

given is a system of linear equations in 3 variables as

$-x - 4y + 2z = −10\\ x + 2y - z = 11 \\x + y - z = 14$

This can be represented in matrix form as

AX=B Or

$\left[\begin{array}{ccc}-1&-4&2\\1&2&-1\\1&1&-1\end{array}\right] *\left[\begin{array}{ccc}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}-10\\11\\14\end{array}\right]$

So solution set

X would be $A^{-1} B$

|A|=-1(-1)+4(0)+2(-1)=--1

Cofactors of A are

-1 0 -1

-2 -1 -3

0 1 2

So inverse of A is

1 2 0

0 1 -1

1 3 -2

Solution set would be

x=12

y=-3

z=-5

8 0

2 years ago

What is the value of y?

kirill115 [55]

We are going to need more contex to awnser this

5 0

2 years ago

Blue Valley College has 490 female students. This is 40% of the total student body. How many students attend Blue Valley College

almond37 [142]

Answer:

1225 is the total amount of students

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2 years ago