Mathematics High School

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

Which of the following does not always maintain a shape's congruency?

A) Translation
B) Reflection
C) Dilation
D) Rotation

Answers

Answer:

C

Step-by-step explanation:

Dialation because when a shape is made bigger it cannot be mapped back on its self correctly

What is 5x-7(x+1)=9
Thanks for the help

Answers

Answer:

x = -8

Step-by-step explanation:

Step 1: Write equation

5x - 7(x + 1) = 9

Step 2: Solve for x

Distribute -7: 5x - 7x - 7 = 9Combine like terms: -2x - 7 = 9Add 7 to both sides: -2x = 16Divide both sides by -2: x = -8

Step 3: Check

Plug in x to verify it's a solution.

5(-8) - 7(-8 + 1) = 9

-40 - 7(-7) = 9

-40 + 49 = 9

9 = 9

At the store the ratio of books sold to movies was 5:7 for every___ movies sold there were ____ books sold

Answers

for every 7 movies sold there were 5 books sold

Calculate (4.3 x 108 ) + (2.5 x 107).
Give your answer in standard form.

Answers

Solutions Solving Steps (4.3xx 108)+ (2.5x×107) Calculate (464.4x)+(267.5x) Rewrite Remove the parentheses 464.4x+ 267.5x Collect like terms Solution 731.9x

Hamburgers are sold in packages of 20, while buns are sold in packages of 12. What are the least numbers of packages you should buy in
order to have the same number of hamburgers and buns?

Answers

Answer:

5 buns and 3 boigas

Step-by-step explanation:

if your gross pay was $365 and your net pay was $313.90 what percent of your pay went towards deductions

Answers

I believe it would be 15%

Name a Transversal.
Helpppp?

Answers

"I" is the transversal because a transversal is a line going through 2 lines in the same plane at two distinct points.

Convert to find the equivalent rate.
1000сm/day= meters/week

Answers

70,week since Their are 10 meters in 1000 centimeters

The perimeter of a rectangular room is 60 feet. Let x be the width of the room (in feet) and let y be the length of the room (in feet). Select all of the equations below that could model this situation.
2(x+y)=60
2x+2y=60
x+2y=60
2x+y=60
x+y=60

Answers

Answer:must be taking a test in algebra

Step-by-step explanation: me to and i stuck or i just don't wanna do it

Answer:

A and B are the correct answers

david goes on an 8-mile walk every saturday. david completes the distance in 4 hours. at this rate, how many miles can david walk in 5 hours and 30 minutes?

Answers

Step-by-step explanation:

4 hours = 8 miles

1 hour = 8/4 = 2 miles

5.5 hours (5 hr 30 min) = 2 miles × 5.5

=11 miles

URGENT 8th grade math

Answers

Answer:

inequality is n< with the line under 12 or n= , with the line under it 12

Step-by-step explanation:

PLEASE HELP ASAPPPPPP

Answers

Answer:

y = x

Step-by-step explanation:

The C's are both placed at 5

Suppose point D is in the interior of ∠ABC, m∠ABC=120 degrees, m∠ABD=3x+40, and m∠DBC=2x−10. What is m∠DBC

Answers

∠ABC is 130 degrees.

See the following image for steps:

Answer: 30

Step-by-step explanation:

Help me solve this problem please

Answers

Answer:

I think what you would do here is line them up from least to greatest, or greatest to least. Hope this helps! <3

Step-by-step explanation:

Interest: $105
Principal: p
Rate: .035
Time: 0.5 y
How do I find the p?

Answers

Answer:

P = $ 600.00

Equation:

P = I / rt

Step-by-step explanation:

Which of the following equation will produce the graph shown below

Answers

Answer:

A) y = 2(x-1)^(2 )- 4

Step-by-step explanation:

Answer:

Answer Y=2(X-1)^(2)-4

solve the following inequality.
-3.55g<-28.4
which graph shows the correct solution?

Answers

Answer:

B

Step-by-step explanation:

Two children are selling lemonade. They are charging $1 for a cup. They only sell 10
Number of cups
Number of
Number of cups
Number of cups
The graph that represents the given situation is
discrete or continuous

Answers

Answer:

you may be talking about this! the answer is (A) for this graph!

if not, let me know!

Which scales are equivalent to 1 inch to 1 foot?

Select all that apply.


A. 1 to 12
A. 1 to 12

B. 112 to 1
B. 1 over 12 to 1

C. 100 to 0.12
C. 100 to 0.12

D. 5 to 60
D. 5 to 60

E. 36 to 3
E. 36 to 3

F. 9 to 108

Answers

Answer:

A D F E

Step-by-step explanation:

Answer:

aa cc dd ee would be the correct answers.

Step-by-step explanation:

There are 365 days in a year and 24 hours in a day. An airport camera records for 18 hours and then automatically resets itself to start recording again how many times does the video camera reset itself in a year.
pls help

Answers

The answer is 486.6

There are 8,760 hours in a year, so 18 divided by 8,760 would = 486.6

Answer:

Step-by-step explanation:

You could do it this way.

How many hours are there in a year?

365 * 24 = 8760 hours.

This camera does not recognize days. It works on hours. Every 18 hours it resets. So

8760/18 = 486  and 2/3 times.

Obviously it cannot have 2/3 of a day. Normally you would round up, but this time you round down.

The answer is 486 times.

2/3 * 24 = 16

The camera would reset 2 hours into the next day.

Seema used compatible numbers to estimate the product of (–25.31)(9.61). What was her estimate?
–250
–240
240
250

Answers

Answer:

it is a becouase if you estimate (–25.31) to -25 and 9.61 to 10 / 25x10 would be 250 since -25.31 was negative it would be option A or -250

Step-by-step explanation:

What is the value of x

Answers

Answer:

x equals 72

Step-by-step explanation:

it is a 1:3 scale

Miss Fancy goes to the spa for the day. Her total cost for the day is $135. She wants to leave a 15% tip. What is the total amount she will pay for her spa day?



$ 114.75


$145


$155.25


$150.25
it's one of these , which one is it , you also have to show how you did it to get points .

Answers

114.75 is the answer
I believe C) if you add $135 + 15% =$155.25

80 = 2 (8 + a)
HELP MEEEE

Answers

(8+32=40) 40*2 is 80 so your answer is 32

Heyyy! What is 0.45 (5 repeating) as a fraction?

Answers

Answer:

41/90

Step-by-step explanation:

- The answer given above does not actually have the repeating 5, this fraction does:

x = 0.455555

100x = 45.55555

10x = 4.5555555

90x = 41 (rounded)

therefore, the fraction is 41/90

Input this into a calculator and it gives you the decimal, with the rpeeatign 5s

Express as a simple fraction in lowest terms
18
OK
42

Answers

Answer:

3/7 is the answer. It is 3 over 7

a
1.80 x 5= 2.16
b
1.80 ÷ 5= 2.16
c
1.80 ÷ 2= 0.90
d
1.80 ÷ 5= 0.36

Answers

Answer:

heidnejfrbfj

Step-by-step explanation:

heudbdbeb

Which graph does not represent a function

Answers

Answer:

4 i think...

Step-by-step explanation:

Answer:

D. or graph 4.

Step-by-step explanation:

Because the function would not make sense when trying to include a way to see the uprise, steady stay, uprise, steady stay, in that order.

order from least to greatest
* I will give you brainiest*
4/7
0.7
72%
5/8

Answers

Answer:

Least to greatest:

4/7, 5/8, 0.7, 72%

Step-by-step explanation:

4/7 in decimal form is 0.571

5/8 in decimal form is 0.625

4/7
5/8
.7
72%


4/7 = .571 or 57.1 %
5/8 = .625 or 62.5%
0.7 = 70%
72%

I need help!!
Please

Answers

Answer:

M' = (6,6)

A' = (-2,-6)

T' = (-20/3, -8/3)

H' = (-8/3, -10/3)

Step-by-step explanation:

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