Solve system of equation by elimination:
-X + 4y = -8
-5x - 4y = -16
a
b
(4,1)
(-1,-4)
(4,-1)
(-4,1)
с
od

Solve System Of Equation By Elimination:-X + 4y = -8-5x - 4y = -16ab(4,1)(-1,-4)(4,-1)(-4,1)od

Answers

Answer 1

Answer:

a. (4, 1)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

-x + 4y = -8

-5x - 4y = -16

Step 2: Solve for x

Elimination

Combine equations:                     -6x = -24Isolate x:                                        x = 4

Step 3: Solve for y

Define equation:                   -x + 4y = -8Substitute in x:                      -4 + 4y = -8Isolate y term:                       4y = -4Isolate y:                                y = -1
Answer 2

Answer:

its b

Step-by-step explanation:


Related Questions

What should I write

Answers

Answer:

4x

Step-by-step explanation:

You multiply the two numbers together:

Top left, purple tile: 3x(x) = 3x^2

Top right, pink tile: 4(x) = 4x

Bottom left, yellow tile: 3x(2) = 6x

Bottom right, blue tile: 4(2) = 8

Basically u multiply the variable above it and the variable at its left

Answer:
4x

Explanation:
x + 4 = 4x

8z - 13 = 5z + 8 The Zs are variables ​

Answers

43 is the answer for the whole equation

Nineteen less than four times a number is greater than forty-seven.
Please i will give away all my points to the person that answers this in number form thanks

Answers

Answer: pretty sure it's the number you multiply by 4 is 17

Step-by-step explanation:

when you multiply 4 and 16 you'll get 64 then you subtract 19 and get 45 which is less than 47 so by reasoning if you were to multiply 4 and 17 you'll get 68 then you subtract 19 from 68 and you should get 49 ( you didn't include how much greater than 47 the number should be but the safest bet would be to use 17)

Fill in the blanks for the explicit formula.
-8, 22, 52, 82, ...

Answers

It is 30. F(30) = -8 + 30(n-1)

Answer:

it is 30

Step-by-step explanation:

i took the test so please mark me the brainlest

I need help help help ​

Answers

Answer:

C!!!!!

Step-by-step explanation:

because common sense

Answer:

the first option.

3 * 10  =      30

4 * 1    =         4

5 * 0.1 =         0.5

7 * 0.01 =      0.07

6 * 0.001 =   0.006

________________

                  34.576

5.
What is the y-intercept of the graph of y = 5x - 12?
A) (0, -12)
B) (0,5)
C) (5,0)
D) (-12, 0)

Answers

Answer:

a

Step-by-step explanation:

-12 is in the correct position, (x,y)

Please answer this is my last assignment for the semester

Answers

Answer:

It's C

Step-by-step explanation:

Multiply the length by the width and you are going to do that by multiplying 4x by 2x and 4 and also multiply -6 by 2x and 4. and then you simplify and you should get the equation C

Courtney is twice as old as Andre and three years older than Natalie. Courtney is half Shari's age. The difference
between Shari's age and Natalie's age is the same as the sum of Courtney's age and Andre's age. The equation below
represents their ages.
2x-(x-3) = x+ x/2
In the equation, the variable x represents
age.

Answers

Answer: x represents Courtney’s age

Step-by-step explanation:

Identify the constant term in this expression 0.25 + 2x + 4z +0.75y
A) 2x B) 4x C 0.25 D) 0.75y​

Answers

C) 0.25 is the answer because it has the lowest degree and doesn’t have a variable

Answer:

0.25..........................................................

.

Add. Express each sum in simplest form : 5/9+1/2

Answers

Answer:

19 /18  or 1 1/18

Step-by-step explanation:

first you need to make the denominators the same

10/18+9/18

then add the numerations together to get

19/18 or 1 1/18

I hoped this helped :)

Jada cut 4 pieces of ribbon that were equal in length. She used a total of 5 feet of ribbon. How long, in feet, was each piece of ribbon she cut?

Answers

Answer:

1.25 feet

Step-by-step explanation:

5/4=1.25

The color reference provided by the automotive manufacture is 44.21%. Does this known value match the measured value at the 95% confidence level

Answers

Answer:

This known value does not match the measured value at the 95% confidence level.

The 95% confidence interval for value is calculated as 42.92 to 43.78%,

Step-by-step explanation:

The complete question is:

Police have a hit-and-run case and need to identify the brand of red auto paint. The percentage of iron oxide, which gives paint its red color, was determined to be 43.35 ± 0.33% by one method of analysis using five measurements. The color reference provide by the automotive manufacture is 44.21%. What can you conclude about whether the sample matches the reference at a 95% confidence level?

Student's t test is used to compare the two values .

Here n=5

Degrees of freedom =ν= n-1= 5-1=4

The value from t- table for 4 d.f at 95 % confidence interval is 2.776

The test statistic is

x`± t ∝/2(v). S/√n

43.35 ± (2.776)(0.33)/√5

= 43.35 ± 0.43

= 43.78, 42.92

Here the 95% confidence interval for μ calculated is 42.92 to 43.78%, where as color reference provided by the automotive manufacture is 44.21%.

This known value does not match the measured value at the 95% confidence level.

The head of maintenance at XYZ Rent-A-Car believes that the mean number of miles between services is 3408 miles, with a variance of 249,001. If he is correct, what is the probability that the mean of a sample of 36 cars would be less than 3245 miles

Answers

Answer:

The probability that the mean of a sample of 36 cars would be less than 3245 miles

P(X⁻≤3245) = 0.975

Step-by-step explanation:

Step(i):-

The mean number of miles between services

                   μ= 3408 miles  

The Variance of miles between services

                σ² = 249,001

                σ = √249,001 = 499

Let 'X' be a random variable in a normal distribution

Given sample size 'n' =36

Step(ii):-

           [tex]Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }[/tex]

          Z = -163/83.16 = 1.96

The probability that the mean of a sample of 36 cars would be less than 3245 miles

P(X⁻≤3245)  =   P(Z≤1.96)

                   =   0.5 + A(1.96)

                   =  0.5 + 0.4750

                  =   0.975

Final answer:-

The probability that the mean of a sample of 36 cars would be less than 3245 miles

P(X⁻≤3245) =0.975

           

         

         

Simplify: 12a + 3.6a -(7 4/5a + 6a - 8.7a)-9.2a

Answers

Answer:

1.3a

Step-by-step explanation:

Which expression is equivalent to 8 1/2 - 9 3/4

Answers

Answer:

just divide them i think

Step-by-step explanation:

Answer:

thats not an answer?

Step-by-step explanation:

Gianna cuts a ribbon into equal pieces as shown below. She uses 4 pieces of the ribbon for a project. What fraction of the ribbon does Gianna use for the project? Explain how you found your answer.

Answers

1/4

ONE of the FOUR total pieces was used.

12. Write the equation of a line that passes through point (2,3) and is parallel
to the line 6x + 3y = 12. *

Answers

Is going to be 3/3 and I did this

How many 5/6 cup scoops of laundry detergent are in 2/3 of a cup of detergent

Answers

Answer:

1

Step-by-step explanation:

No bother to find or locateNope not found nope

Answers

That’s Um..ah okay then

HELP!!!! Read the following story carefully, and then complete the activities that follow.

"Good-bye, Mom," Tino cried as he rushed out the door. Tino had his new fishing pole with him and was anxious to try it out.

Tino Kanaha (kan' ah hah) was a Hawaiian boy. He had just turned twelve the day before and had received the fishing pole as a gift from his father.

Tino's house was about a half mile from the cliff overlooking the leeward side of Maui. Many times Tino had climbed down to the rocks below and looked for seashells while his father fished for aku.

"Now it's my turn," thought Tino as he scurried out onto one of the rocks, "and I get to do it all by myself!"

"Aku, here I come!" yelled Tino excitedly as he cast his bait into the surf.

An hour later, Tino heard someone call his name. He looked up and saw his good friend, Kona. "Have you caught anything?" Kona yelled.

"Oh, hi, Kona," Tino said disappointedly. "Wait for me, and I'll be right up."

As Tino reeled in his line, he noticed the waves were much bigger than they had been before. "The wind is stronger, too, " thought Tino as he glanced at the darkening sky.

"We'd better hurry home," Tino said to Kona as he reached the top of the hill. The two boys ran as quickly as they could. They even took the short cut through the sugar cane field to save time.

Kona raced into his yard and, without stopping, he yelled, "Good-bye, Tino! I'll see you tomorrow!"

The first big drops of rain began to fall as Tino reached the front door of his house.

"Oh, I'm glad you're home!" Mrs. Kanaha said. "It is beginning to rain very hard!"

"The storm must be the reason the fish weren't biting," Tino said as he put his fishing pole into the rack on the porch, "but I'll try again tomorrow."



Give two details that are clues that Tino did not catch any fish.

Answers

Detail 1: In the second to last paragraph Tito states that “the storm must be the reason the fish weren’t biting” indicating that the he didn’t catch any fish

Detail 2: When Tito’s friend Mona asks “Have you caught anything ?” Tito doesn’t answer the question and only says “Oh hi Kona” which shows that he didn’t catch a fish yet
Clue #1 - “Oh, hi, Kona,” Tino said DISAPPOINTEDLY. “Wait for me, and I’ll be right up.”

Clue #2- “The storm must be the reason THE FISH WERENT BITING,” Toni said as he put his fishing pole into the rack on the porch, “but I’ll try again tomorrow.”

y = 2(x - 2)2 + 1
10
What is the
a. Vertex
b. Axls of Symmetry line: x =
c.y.Intercepts:(

Answers

Answer:

Step-by-step explanation:

Vertex

Write the equation of the line that is parallel to the original equation and passes through the point
(12, 6).

Answers

Answer:

12

Step-by-step explanation:

12 your welcomeeeeee


10(8r+23) =1430
HELP PLS ITS FOR MY HW PLS PLS PLS

Answers

Answer:

r = 15

Step-by-step explanation:

10(8r + 23) = 1430

Divide both sides by 10.

8r + 23 = 143

Subtract 23 from both sides.

8r = 120

Divide both sides by 8.

r = 15

the red knot speeds spring and summer in northern canada where it's breeding ground are located and winters as far south as the southern tip of South America.


a) Canada, where it's breeding ground located
b) Canada where it's breeding ground located,
c) canada, where it's breeding ground located,
d) correct as it is


witch one is correct​

Answers

Answer: A

Step-by-step explanation:

uIf it included Northern in the answer choices than it should be capital because it is a location and with the comma after Canada helps clarify here its breeding ground is at and to stop it from being a run on sentence (tho It would be used with a period to stop a run on sentence but to help it here.)

I NEED HELP ON THIS RIGHT HERE ASAP!

Answers

Step-by-step explanation:

its C. 3/4 is equal to .75

-.59 obviously goes last

can u pls help me with this question ​

Answers

Answer:6

Step-by-step explanation:

when it at 6 dallors the hour is 1

$6 and hour hope this helped :)

HELP FAST WILL MARK BRAINLYEST

Answers

Answer:

It should be -7

Step-by-step explanation:

since it starts from D to B in the number line

I thing 7 is the answer

A plumber charges $80 for a house call and $25 per hour for his services. Which of the following is a linear model of his charges.

Answers

Answer:bals

Step-by-step explanation:25(number of hours worked) +80$ for initial charge

Answer:

25x+80

The number of hours is x for services

PLEASE ANSWER THIS ONE!!!

Answers

Answer:

6:5

Step-by-step explanation:

i think this is it as I square rooted it and go that

Express as a trinomial
(3x + 8)(2x + 1)

Answers

Answer:

6x^2+ 19x+8

Step-by-step explanation:

(3x+8)(2x+1) use foil method which gives you,

6x^2+16x+3x+8 then combine like terms which gives you,

6x^2+ 19x+8.

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