7. Solve the system of equations using substitution and elimination. No matrix
calculator
3x - 2y - Z = -12
8x - 3y + 4z = 6
-7x + 5y - 3z = 2

Answers

Answer 1

Answer:

65

Step-by-step explanation:

FCJCFHCYJHCJ=09

HYVFYTRYTRYTRYTRYTRHUVF08=887U#]]]]]]]]]]]]]]]]]

X=9


Related Questions

angle a and b are supplementary angles. angle where a = 30+2x and b =x what is the measure of b degress

Answers

Answer:32  times 4 -  8 in degrees

Step-by-step explanation:

Since b = x, hence the value of b is 30 degrees

For two angles to be supplementary, the sum of the angles must be equal to 180 degrees

Given the angles

a = 30 + 2x

b = x

Equating the sum to 180

a + b = 180

30+2x + x = 180

30 + 3x = 180

3x = 180 - 30

3x  = 150

x = 30 degrees

Since b = x, hence the value of b is 30 degrees

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Help!!! What is Find the product of –35 • (–1.5)???

Answers

Answer:

52.5

Step-by-step explanation:

Two negatives make a positive so the answer is 52.5

Ryan works at the car wash making $5.30 per hour plus tips. Last week Ryan worked 32 hours and earned $403. How much in tips did Ryan make last week? a. $86.40 b. $148.00 c. $169.60 d. $233.40 Please select the best answer from the choices provided A B C D

Answers

Answer: D $233.40

Its simple math you’re welcome

Ryan earned $233.40 from the tips. Option D is correct

Ryan works at the car wash making $5.30 per hour plus tips.
Last week Ryan worked 32 hours and earned $403
How much in tips did Ryan make last week?

What is arithmetic?

In mathematics, it deals with numbers of operations according to the statements.

Let the tip Ryan get be x,
Ryan earned $5.30 per hour.
Ryan earned $403 for 32 hours of the working,
Ryan worked 32 hours so,
Ryan earned = 32 * 5.30
                      = 196.4
Total tips that Ryan earned = total earning - Ryan earned
                                               = $403 - $196.4
                                               = $233.40

Thus, Ryan earned $233.40 from the tips. Option D is correct

Learn more about arithmetic here:

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#SPJ6

What is the value of 3-(-2)?
5 4 3 -2 -1 0 1 2 2 3
4 5
0-5
0 -1
O 5

Answers

Answer:

answer it is 5

Step-by-step explanation:

yea

I believe

It 5





Hop this helps





Because I asked my teacher

The distance between two towns on a map is 2.5 centimeters. The map uses a scale where 1 centimeter represents 50 kilometers. What is the actual distance between these two towns in kilometers?

Answers

Answer:

125 kilometers

Step-by-step explanation:

2.5 * 50 = 125

The weight of a blue whale

Answers

Answer:

About 110,000 – 330,000 lbs.

Step-by-step explanation:

Your Welcome :)

Answer:

110,000 – 330,000 lbs

Step-by-step explanation:

I GOT CHU

Simply:
ab+ab

Please actually explain thank you (:

Answers

Answer:

ab+ab

Step-by-step explanation:

[tex] ab+ab [/tex]

[tex](a+b)(a+b) [/tex]

[tex]2ab[/tex]

The larger of two numbers is 15 less than two times the smaller number. If the sum of the two numbers is 63, find the LARGER number.

Answers

Answer:

Let x = the smaller number

Let 3x + 15 = the larger number

x + 3x + 15 = 63

4x = 48

x = 12

3(12) + 15 = 51

Step-by-step explanation:

I hope this helps

look at the picture
thx guys

Answers

Dang that’s a cool picture =)
What grade level is this?

which of the following are true​

Answers

Answer:

Where is it

Step-by-step explanation:

Id help but i cant see it

What is a6/7 as a decimal

Answers

Answer:

0.857

Rounded: 0.86

Step-by-step explanation:

6/7 = 0.857

Answer:

See attached image!!

Step-by-step explanation:

Solve the equation.
3/2y - 5 = -2

Answers

Answer:

y= 1/2 is the answer.

Step-by-step explanation:

Answer:

y = 2

Step-by-step explanation:


For a field trip, 25 students rode in cars and the rest filled eight buses. How many students
were in each bus if 321 students were on the trip?

Answers

37 students were in each bus!

321-25=296
296/8=37

Hope this helps and please mark brainliest!!

SOMEONE HELP ME ITS DUE IN 30 MINSS !


mrs Williams is deciding between 23 trips in her class. The science center charges $160+$6 per student. The Dino discovery music simply charges $10 per student. For how many students will the science center charge less than the Dino discovery museum?

Answers

Answer:

68

Step-by-step explanation:

Show your work for x+3=12

Answers

Answer:

X = 9 (just bring the +3 to the to the other side to make it -3)

Answer:

x=9

Step-by-step explanation:

x+3=12

the subtract 3 from both sides

x+3−3=12−3

3x= 12

then divide both sides by 3

x=9


The ratio of girls getting pickle pop chips to boys getting pickle pop chips is 20 to 11. If the girls
received 40 pickle pop chips, how many were given out altogether?

Answers

Answer:

The answer is 62

Step-by-step explanation:

the ratio given can be written as [tex]\frac{20}{11}[/tex].

first, we need to solve for how many boys received if the girls received 40.

let's write a new ratio to show this.

[tex]\frac{20}{11} = \frac{40}{x}[/tex]

notice how i was able to equal them to each other. this is because they represent the same rate.

to solve for x, cross multiply.

[tex]20x= 440\\[/tex]

now solve.

[tex]x=22[/tex]

the 22 represents how many boys will receive if the girls receive 40.

the question is asking how many will be given out all together. this implies that we should add 40 and 22.

[tex]40+22= 62[/tex]

62 pickle pop chips were given out.

hope this helps!

3 (4x-2) = 12 x how many solutions are there

Answers

There are no solutions

7.
You are buying t-shirts for the members of the math club. Each short-sleeve t-shirt costs
$10 and each long-sleeve t-shirt costs $17. If you purchase x short-sleeve t-shirts and y
long-sleeve t-shirts, write an equation to represent the total cost of the purchase.

Answers

Answer:

10x +17y=c (C is the total cost)

Answer:

10x+17y = z

Step-by-step explanation:

You have to multiple 10 by the number of t shirts you have(x)

Then you have to multiply 17 by the number of long sleeve shirts you have (y)

You then have to add 10x and 17y to get your total cost(z)

What´s after -2 in a number line of negatives

Answers

Answer:

After negative 2 it would be negative 3

Step-by-step explanation:

---------------------------

   -3     -2    -1     0

Membership to a music club costs $55. Members
pay $10 per music lesson and nonmembers pay
$15 per music lesson. How many music lessons
would have to be taken for the cost to be the
same for members and nonmembers?


Answers

Answer:

Step-by-step explanation:

Members:

[tex]55/10=5.5[/tex]

Nonmembers:

[tex]55/15=3.6[/tex]

The product of -8 and -4 is -32.


True False

Answers

Answer:

False

Step-by-step explanation:

-8 · (-4) = 32

The two negatives cancel each other out so the answer is positive.

Hope I helped :)

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The slope of a line is the ratio of the
A.
vertical change to the horizontal change between any two points on the line.
B.
x-intercept to the y-intercept.
C.
y-intercept to the x-intercept.
D.
horizontal change to the vertical change between any two points on the line.

Answers

Answer:

A.

vertical change to the horizontal change between any two points on the line.

Step-by-step explanation:

slope is the ratio of the vertical and horizontal changes between two points on a surface or a line. The vertical change between two points is called the rise, and the horizontal change is called the run. The slope equals the rise divided by the run: . This simple equation is called the slope formula.

The slope of a line is the ratio of the : A.  Vertical change to the horizontal change between any two points on the line.

The slope of a line is the gradient of a line and it describes (represents) both the direction and steepness of an equation of a straight line.

Mathematically, the slope of a line is calculated by using this formula;

[tex]Slope. \;m = \frac{Change \; in \; y \;axis}{Change \; in \; x \;axis} \\\\Slope. \;m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]

Hence, the slope of a line is the ratio of the change in y-axis (vertical) to the change in x-axis (horizontal) of a line.

Additionally, the standard form of an equation of line is given by the following formula;

[tex]y = mx + b[/tex]

Where:

x and y are the points. m is the slope. b is the intercept.

In conclusion, the ratio of the  vertical change to the horizontal change between any two points on the line is the slope of a line.

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1
The absolute value of --
4
is
1
A
4
B) 4
с
0
D
4

Answers

Answer:

correct

Step-by-step explanation:

Which expression give the prime factorization of 80?

Answers

Answer:

Prime factorization: 80 = 2 x 2 x 2 x 2 x 5 which can also be written 80 = 2⁴ x 5.

Step-by-step explanation:

hope this helped <3

Answer:

2 x 2 x 2 x 2 x 5

Step-by-step explanation:

whats the distance between (1,2) and (4,-2)

Answers

Answer:

5 units

Step-by-step explanation:

Distance formula:

[tex]\sqrt{(x2-x1)^2 + (y2-y1)^2}[/tex]

Square root of those quantities. x2 and x1 mean the x values from one coordinate and the other, and the same goes for the y-coordinates. So y2-y1 represents (-2) - (2) and x2-x1 = (4) - (1). The answers you get (-4 and 3, respectively), now have to be squared, then added together. So (-4)^2 = 16 and (3)^2 = 9. Add 16 and 9 together you get 25. Final answer, you square root 25 and you get 5. Technically the square root of 25 is both positive and negative 5, but you cannot get a negative number for distance in this case (vectors are different).

how to solve: g/27 = 2/9 using one-step equations. whom ever will answer i will give the brainliest!

Answers

Answer:

what you do is 9 times what equals 27 well 3 does so you multiple 2/9 by 3/3 and get 6/27

so the answer is 6/27 :)

G/27 = 2/9
G = 27 x 2/9
G = 54/9
G = 6

6/27 = 2/9 (divide 6/27 using 3’s table)
6/3 = 2, 27/3 = 9

2/9 = 2/9

What is mass if force is 45 N and acceleration is 39 m/s/s?

Answers

Answer:

The answer is 1.15 kg

Step-by-step explanation:

To find the mass of an object given it's acceleration and the force acting on it we use the formula

[tex]mass = \frac{force}{acceleration} \\ [/tex]

From the question

force = 45 N

acceleration = 39 m/s²

We have

[tex]force = \frac{45}{39} = \frac{15}{13} \\ = 1.153846...[/tex]

We have the final answer as

1.15 kg

Hope this helps you

What is the slope of the line in the graph?

Answers

(-4,4) (4,-2)

m = (y2-y1)/(x2-x1)

m = ( -2-4)/(4-(-4))

m = -6/8

m = -3/4

Answer:

(4,3)

Step-by-step explanation:

Pick the 2 closest points that are perfectly on the line [(0,1) and (4,-2)]. Start at the first point (0,1) count to the right (From (0,1) to (4,1)) and that's our "x" number (4). Count down from that point (4,1) to the other predetermined point (4,-2) and you get your "y" number (3), thus (4,3)

Evaluate the function.
f(x) = -3x2 – 20
Find f(-9)

Answers

Answer:

-3(-9)-20=7

Step-by-step explanation:

A line is represented by the equation y = 3x
A The y-intercept is 7.
7. Which of the following statements about the line is TRUE?
B. The line has a positive slope.
C. The point (1,4) lies on the line.
D. This line is parallel to the line whose equation is y - 2x - 7.

Answers

Answer:

B

Step-by-step explanation:

the line has a positive slope. you can tell by comparing the equation of the line to y=MX+c where m=slope= coefficient of x.

In this case the coefficient of x is positive 3.

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