Show the steps to solve the system of equation. x-2y+3z=-4 , 3x+y-z=0 , 2x+3y-5z=1

Answer:

1/15

Step-by-step explanation:

2/3*5/5 - 3/5*3/3( we are multiplying and dividing by the same number in order to get the same denominator. as 5/5 = 1 and 3/3= 1)

2/3*5/5 - 3/5*3/3

= 10/15-9/15

= 1/15

The question is an illustration of solving equations using estimates.

The student's strategy makes sense because he uses estimation to solve the given equation

The correct sequence of equation is as follows:

We have:

[tex]\mathbf{159 - 73}[/tex]

Add 0 to the equation

[tex]\mathbf{159 - 73 =159 + 0- 73}[/tex]

Express 0 as 1 - 1

[tex]\mathbf{159 - 73 =159 + 1 - 1- 73}[/tex]

[tex]\mathbf{159 - 73 =160 - 1- 73}[/tex]

Add another 0

[tex]\mathbf{159 - 73 =160 - 1- 73 + 0}[/tex]

Express 0 as 3 - 3

[tex]\mathbf{159 - 73 =160 - 1- 73 + 3 - 3}[/tex]

[tex]\mathbf{159 - 73 =160 - 1- 70 - 3}[/tex]

Rewrite as:

[tex]\mathbf{159 - 73 =160 - 70- 1 - 3}[/tex]

Solve

[tex]\mathbf{159 - 73 =90- 4}[/tex]

[tex]\mathbf{159 - 73 =86}[/tex]

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Answer:

1.33

Step-by-step explanation:

9514 1404 393

Answer:

  4/3

Step-by-step explanation:

If you're familiar with decimal equivalents (or even if you're not), you can use your calculator to compute the quotient:

  7.5/5.625 = 1.333333333...

The rational number equivalent of the result is 4/3.

__

If you like to work directly with the rational numbers, you can write the ratio as ...

  (7 1/2)/(5 5/8) = (7 4/8)/(5 5/8) = (60/8)/(45/8) = 60/45 = 4/3

9514 1404 393

Answer:

  (c)  a = 14; b = 6√2

Step-by-step explanation:

If you draw a vertical line at the right end of the top segment, it will cut off an isosceles right triangle to its right. That triangle is shown as having a leg length of 6, so the length of 'a' is ...

  a = 8 +6 = 14

The hypotenuse of an isosceles right triangle is √2 times the leg length, so ...

  b = 6√2

Answer:

ITS 9

Step-by-step explanation: i just had to divide the 27 by 3 because if its a cube cubes are the same hieght langth and width of each other so it is 9

Answer:

8

Step-by-step explanation:

a triangle for each side

Answer:

28

Step-by-step explanation:

The total amount of cows is 48 and is split into 12 groups (7+5).

So 1 group is 48÷12=4

1 group=4

He owns 7 groups of Holstein cows.

So if 1 group is 4, 7 groups is 7x4=28.

28

The number of Holstein cows, if The ratio of Holstein and jersey cows is 7:5, and the Total number of cows is  48, is 28.

It is the contrast of two different quantities. For instance, if your father weighs 90 kg, and you weigh 30 kg, the weight ratio is 1:3. If b is not equal to 0, an ordered pair of numbers a and b, denoted as a / b, is a ratio. A proportion is an equation that equalizes two ratios.

Given:

The ratio of Holstein and jersey cows is 7:5,

Total number of cows = 48

Calculate the values as shown below,

Assume the number of Holstein cows is 7x

7x + 5x = 48

12x = 48

x = 4

Thus, the number of Holstein cows is 7 × 4 = 28

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Answer:

x = 19/3

Step-by-step explanation:

Step 1 = x - 4 = 7/3

Step 2 = x = 7/3 + 4

[(4*3)+7]/3 = 19/3

Answer:

3 and t pies holnden farmall travtor

Answer:

The range is the y-values that satisfices the graph.  0 to  all negative  numbers.

Step-by-step explanation:

The graph highest value is 0 on the y-axis and goes down ( any negative numbers).

Answer:

F=g^2+6

Step-by-step explanation:

Simplify:

1. Assume you need to multiply the variables by the numbers next to them:

2. Assume the number next to the variables mean exponents:

Answer:

this is my another account on brainly

Answer:

Here,

2 weeks savings is 1450×(7/100) dollars = 101.5 dollars

So, Dylan can save,

101.5 dollars in 1 periods

1 dollars in 1/101.5 periods

5800 dollars in 5800/101.5 periods = 57.142 or 58 periods

Answer = 58 periods

Step-by-step explanation:

Answer:

6702

Step-by-step explanation:

2874/3*(3+4)=6702

Answer:

Domain is the X values, Y is the range Values

Step-by-step explanation:

(0,0) both domain and range is 0

(4,-1)  4 is the domain, -1 is the range

(1,5) 1 is the domain, 5 is the range

(-2,-4) -2 is the domain, -4 is the range

(-5,-1) -5 is the domain, -1 is the range

(-5,3) -5 is the domain, 3 is the range

(sorry if this is not the thing you are looking for but this is what I know)

Answer:

Domain: [tex]4\leq x\leq -5[/tex]

Range: [tex]-1\leq y\leq 3[/tex]

Step-by-step explanation:

In a relation, WE CAN IDENTIFY THE DOMAIN AND RANGE by looking at the points.

https://brainly.com/question/11447256

Let z = 2 - 2√3 i. In polar form, we have

[tex]z = |z| e^{i\arg(z)}[/tex]

where

[tex]|z| = |2-2\sqrt3| = \sqrt{2^2 + (-2\sqrt3)^2} = 4[/tex]

[tex]\arg(z) = \tan^{-1}\left(-\dfrac{2\sqrt3}2\right) = -\tan^{-1}(\sqrt3) = -\dfrac\pi3[/tex]

Equivalently,

[tex]z = 4\left(\cos\left(-\dfrac\pi3\right) + i\sin\left(-\dfrac\pi3\right)\right)[/tex]

Let w be a complex number such that w ² = z. By DeMoivre's theorem,

[tex]z = 4\left(\cos\left(-\dfrac\pi3\right) + i\sin\left(-\dfrac\pi3\right)\right) \\\\ \implies z^{1/2} = 4^{1/2} \left(\cos\left(\dfrac{-\frac\pi3+2k\pi}{2}\right) + i \sin\left(\dfrac{-\frac\pi3+2k\pi}{2}\right)\right)[/tex]

where k ∈ {0, 1}. So the two square roots of z are

[tex]z^{1/2} = \begin{cases}2\left(\cos\left(-\dfrac\pi6\right) + i\sin\left(-\dfrac\pi6\right)\right) & \text{for }k=0 \\\\ 2\left(\cos\left(\dfrac{5\pi}6\right) + i\sin\left(\dfrac{5\pi}6\right)\right) & \text{for }k=1\end{cases}[/tex]

[tex]z^{1/2} = \begin{cases}2\left(\dfrac{\sqrt3}2 - \dfrac12 i\right) & \text{for }k=0 \\\\ 2\left(-\dfrac{\sqrt3}2 + \dfrac12 i\right) & \text{for }k=1\end{cases}[/tex]

[tex]\boxed{z^{1/2} = \begin{cases}\sqrt3 - i & \text{for }k=0 \\ -\sqrt3 + i & \text{for }k=1\end{cases}}[/tex]

Answer:

3 Redwood trees

5 Spruce trees

Step-by-step explanation:

Step-by-step explanation:

according to the drawing, the minimum value of the function is 0, the domain of the function decreasing is x < 0,

so, the correct answer is

a. (-oo, 0)

Answer:

Step-by-step explanation:

Answer:

(23)(−98)(−45)(−1)= -101430

Answer:

16

Step-by-step explanation:

There can be two groups of 10 players on each team, or four groups of 5 on each team.

Answer:

I'm pretty positive it's C but I may be wrong, sorry if I am.

Step-by-step explanation:

Answer:

x = -1

Step-by-step explanation:

5x + 3 -2x = 2(x + 1) >>> Simplify by combining terms

3x + 3 = 2x + 2 >>> Subtract 2x and 3 from both sides

x = -1

Answer:

4  but i'm bad at cooking cause i'm 15 so

Step-by-step explanation:

The lower bound of the measurement is 65.5 millimetres.

A centimetre equals 10 millimetres, a measure is expressed by the measured magnitude plus uncertainty, the latter one represents the grade of precision of the measure instrument. That is to say:

[tex]y = x + \epsilon[/tex] (1)

Where:

If we know that [tex]y = 67.5\,mm[/tex] and [tex]\epsilon = 1\,mm[/tex], then the lower bound of the measurement is:

[tex]y = 67.5\,mm - 2\cdot (1\,mm)[/tex]

[tex]y = 65.5\,mm[/tex]

The lower bound of the measurement is 65.5 millimeters.

We kindly invite to check this question on measurements: https://brainly.com/question/4205362

Answer:

100 is the correct answer.

Step-by-step explanation:

=2×2×5×5

=4×25

=100

Hope this helps you. Have a nice day. Please mark as brainliest. It helps a lot. :)

Answer:

2^2 × 5^2

2× 2 × 5×5

4 × 25

100

Answer:

= 17.25 pounds (Answer)

Step-by-step explanation:

Potatoes she bought = 23 pounds

Amount she gave outsiders= 10+15=25%

= 23×25/100= 23/4=5.75 pounds

Potatoes left with her= 23 — 5.75

= 17.25 pounds (Answer)

Answer:

17.25 pounds

Step-by-step explanation:

10% of 23 is 2.3

15% of 23 is 3.45

Add them together you get 5.75

Subtract 5.75 from 23

Answer is 17.25