Mathematics High School

Select the best method of finding an accurate solution to a system of linear equations.

A:use algebraic methods
B:graph the lines
C:guess and check

Answers

Answer 1
A.use algebraic methods

Related Questions

Which of the following is a function?

Answers

Answer:

this is a function

Step-by-step explanation:

Answer:

I think it’s -3

Step-by-step explanation:

Points A,B, and C are collinear. Point B is between A and C. Solve for x.
Find x if AB = 2x-14, BC = x+4 and AC =14

helpp will give brainliest

Answers

Answer:

Ac=14 is you answer i think

Step-by-step explanation:

Hope this helps

An expression is shown below:

the square root of 32 plus the square root of 2

Which statement is true about the expression?
the square root of 32 plus the square root of 2
It is rational and equal to 4 times the square root of 2.
It is irrational and equal to 4 times the square root of 2.
It is rational and equal to 5 times the square root of 2.
It is irrational and equal to 5 times the square root of 2.

Answers

Answer:

C or D...

im guessing

Answer:

√32=√(16*2)=4√2  

4√2 + √2=5√2

That is why is irrational

Step-by-step explanation:

I REALLYYYYY NEED HELP PLSSSS NO DUM ANSWERS I SERIOUSLY NEED HELP

Answers

Answer:

First blank: 869x

Second blank: 17,575

D

Step-by-step explanation:

Men (f): 389x + 7500

Women (g): 480x + 10075

Equation: (f + g)

Equation: 389x + 7500 + 480x + 10075

Combine like terms

869x + 17575

Equation: 869x + 17,575

PLEASE HELP TIMED TEST!!!


Which interval below correctly describes the domain of the graph f ( x ) ? a.) (-∞,3} b.) [-3,5] c.) [-5,3] d.) (-∞,∞)

Answers

Answer:A

Step-by-step explanation:

If they both go down from 3 then it is 3 and then -infinity.

(this is my best answer without a picture, hope you get it right!)

1.) Determine if the coordinate points represent a function. (1.3). (2.6). (3.9). (4. 12). (5.15

O Function

O Not a Function

O both​

Answers

Answer:

Function

Step-by-step explanation:

These coordinates do represent a function. For a relation to be a function every y-value must have an x-value, this means x's cannot repeat. In this relation x's never repeat, they simply increase by one every time. Therefore, this is a function.

You are given two vertical angles. The first angle measures 30 degrees.

The second angle measures x + 10 degrees. What is the value of x?

Answers

Answer:

20 degrees

Step-by-step explanation:

vertical angles are congruent:

x+10=30

HELPPP NEED THIS IN THE NEXT 10 MINSS!!!!

Answers

The answer is 45
Hahahahahahab

Solving a Real-World Problem
Mr. Martin is giving a math test next period. The test, which is worth 100 points, has 29 problems. Each problem is
worth either 5 points or 2 points. Write a system of equations that can be used to find how many problems of each
point value are on the test.
Let x be the number of questions worth 5 points and let y be the number of questions worth 2 points.
x + y = 29, 5x + 2y = 100
x + y = 100, 5x + 2y = 29
5x + y = 29, 2y + x = 100
2x + y = 100, 5y + x = 29

Answers

Answer:

x + y = 29

5x + 2y = 100

Step-by-step explanation:

Here, we want to set up equations

There are 29 problems, so adding up the number of individual problem types will give 29

x + y = 29 ••••••(i)

Let us work with points now;

x is worth 5 points, y is worth 2 points

Thus, mathematically;

5x + 2y = 100 ••••••••••(ii)

Answer: A. x + y = 29, 5x + 2y = 100 and the other one is B. 14 problems worth 5 points and 15 problems worth 2 points

solve for 2x+2(x−5)=6

Answers

Answer:

x=4

Step-by-step explanation:

PLEASE HELP AND SHOW WORK​

Answers

Answer:

38) Angle 2 = 32°; angle 1 = 32°; angle 3 = 110°

39) Angle 3 = 81°; Angle 2 = 28°; angle 1 = 71°

Step-by-step explanation:

38) angle 2 = 180 - (110 + 38)

This is because sum of angles in a triangle is equal to 180°. Thus;

Angle 2 = 32°

Angle 1 = 38° due to the postulate that alternate interior angles are equal

Angle 3 = 110° due to corresponding angles postulate

39) Angle 3 = 81° due to the postulate that alternate interior angles are equal

Angle 2 = 28° due to the postulate that alternate interior angles are equal

Angle 1 = 180 - (81 + 28) = 71° due to the fact that angles in a triangle sum up to 180°

anyone good at solving rational zeros ​

Answers

Answer:

sort of

Step-by-step explanation:

B) sometimes but it depends.

$1400 is divided between two accounts. One account pays $3%$ interest, while the other pays $4%$. At the end of the interest period, the interest earned was $50. How much was invested in each account?

Answers

Answer:

$60

Step-by-step explanation:

one of them got $40 and the other one $20

Mrs. Russell bought a computer for $250. The tax was 7%. What was the total cost of the computer with tax?

Answers

Answer:

$267.5

Step-by-step explanation:

7% of 250=17.5. 250+17.5=267.5

Answer:

267.5

Step-by-step explanation:

250+7%=267.5

Hope this helps :)

2x + 5 = 13
What is the answer and the steps for this equation

Answers

Answer: 4
Subtract 5 from both sides
You end up with 8
Divide 2 by 8
You end up with x=4

2x + 5 = 13

2x = 13 - 5

2x = 8

*divide both sides by 2*

x = 4

Please I dont wanna fail :( help me

Answers

Answer:

f = 132 degrees

Step-by-step explanation:

The total angle measure of this is 360 degrees. We know 2 of the angles, so subtract them from 360 to get 198. The sum of f and g must equal 198 degrees. Since we know that f = 2g, we can divide 198 by 3 to get 66. So, we know g = 66. To find f, multiply 66 by two to get 132. So, g = 66 and f = 132

Could use some help please
2x+y=-4
-3y=2x+12

Answers

Answer: 3y=12−2x 3 y = 12 - 2 x

Step-by-step explanation:

Answer:

Let

2x+y=-4——(1)

-3y=2x+12

2x+3y=-12—-(2)

Deduct eqt 1 from 2

(2x+3y=-12)

-(2x+y=-4)

2y=-8

y=-4

Put y=-4 into eqt 1

2x-4=-8

2x=-8+4

2x=-4

Divide both sides by 2

x=-2

:. x,y= -2,-4

Step-by-step explanation:

Which of the following expresses the possible number of positive Icai
solutions for the polynomial equation shown below?
5x° + x2 - 7x+ 28 = 0
O A. Zero
B. One
C. Two or zero
D. Three or one

Answers

9514 1404 393

Answer:

  C.  Two or zero

Step-by-step explanation:

The signs of the polynomial terms are: + + - +.

There are two sign changes, one from + to -, and the other from - to +. The two sign changes means the number of positive real roots will be a maximum of 2. Any even number of roots may be complex, so will not be real. That is, the number of positive real roots may be 2 or 0.

find the value of the expression below x=2 3x​

Answers

x=2
So that would mean
3(2)=6
Hope this helps have a good day! :)

JEJEISHEVEHSUEHRH PLEASE ✋✋✋✋

Answers

red- 2
green- 3
yellow - 1
blue- 4

on aleks, need help asap :(

Answers

Xienfjejcne where’s the equation homie

Yoo 9th grade math please help me out My grade is slowly slipping

Answers

Answer: I'm pretty sure it would be no

Step-by-step explanation:

Answer:

No

Step-by-step explanation:

y_<_2x

4_<_2(3)

4_<_6

true

y > x + 4

4 > 3 + 4

4 > 7

false

20 POINTS!!!
Which day and time represents the best predicted time during this week to explore the tide pools in Point Loma?
What is the difference between the highest tide predicted on this table and the lowest tide predicted on this table?
What is the difference between the highest and lowest tides predicted on Friday, January 31?
Ryan and his dad plan to go tide pooling on Saturday morning around 11:30am. Did they pick a good time to go? Is there a better time on Saturday that they should go instead? Explain your reasoning using complete sentences.

Answers

Answer:

I'm doing this project rn I'll help you as soon as I'm done! Did you do the other sections already?

Step-by-step explanation:

HELP ASAP
6+ x - y + 10=

Answers

Answer:

x-y+16

Step-by-step explanation:

add the like terms, 6 and 10 which is 16. since the variables are not like terms, thats your final answer. hope it helped :)

Find the solution between - x - 3y = 6 and the equation of the line shown on the graph below.

Answers

Answer:

They are the same line.

Step-by-step explanation:

y = -1/3x - 2

-x - 3y = 6

First, we need both lines to follow the equation of y = mx + b so that we can graph them. We already have one equation in that form (the one from the graph given), so we can ignore that for now.

Next, we need to solve -x - 3y = 6. Let's first move the x to the other side of the equal sign.

-3y = x + 6

Now, since we have a similar equation to what we need, we just need to divide the y by the given number in front (or -3). But that also means that we must divide the other side by the same amount (or each variable).

-3y = x + 6. -> y = -1/3x - 2

So, your final equation for -x - 3y = 6 should be;

y = -1/3x -2

Bringing down the other equation, we get:

y = -1/3x - 2 and y = -1/3x - 2

Making both equal to each other (they cancel each other out).

Hope this helps!

(And sorry that this is a long explanation)

Solve 7x - 9 = 28 + 4(x - 1).

A X = -11
B x = 11
C X = 3
D x=-3

Answers

Answer is A. X= 11
Have a good day
It’s B I just used a calculator to it :)

1.008 +7.
2-5.92 +2.34​

Answers

The answer is
4.628
Hope that helps <3

Answer: 4.628

Step-by-step explanation:

I need help with this question from edulastic please.

Answers

the answer would be C.


-1 has more than one output.


hope this is correct,, have a nice day :))

Answer:

i think it is the one you c

Step-by-step explanation:

this is for freckle which I hate can someone help?

Answers

Answer:

The answer is B. 26 miles per hour.

Step-by-step explanation:

13+13=26

X goes by an hour.

The answer would be C.39 because 39 lines up with 1 he so 39 miles per hour

Hope this helps

Have a great day/night

Who earns more per hour, and what is his or her pay rate?

Answers

It would be B because 34.50 divided by 3=11.50 which is more than Amina

Hope this helps

Have a great day/night
Other Questions
1. How are the messages and teachings of Judaism andBuddhism similar/same? If an object has applied force of 20 N and a frictional force of 5 N what is the net force? What is the equation of a parallel line to y = -5x + 2 that passes through the point (-1, 4)? Which was NOT a cause of the War of 1812?A) British impressment of American sailorsB) American support for the Native AmericansC) British interference in American shipping AmericansD) British support for the Native Americans what expression is equivalent to h + 5 + 3 - 2h In ancient Greece, every citizen of Athens had an equal voice and the right to participate in the city's government. What type of government did Athens have? At what temperature a gas with volume 175 L at 15 oC and 760mmHg will occupy a volume of 198 L at a pressure 640mmHg? Helppppppppppppppppppppppppppp 1. What are the four levels of organization in our bodies, from smallest to largest?(smallest)>(largest) Which statement describes the mapping?Group of answer choicesA. The mapping does not represent y as a function of x, because two of the x-values corresponds to the same y-value.B. The mapping represents y as a function of x, because each y-value corresponds to exactly one x-value.C. The mapping does not represent y as a function of x, because there are more x-values than different corresponding y-values.D. The mapping represents y as a function of x, because each x-value corresponds to exactly one y-value. Does sound travel faster in a warm room or a cold room?Explain your answer.2 paragraphs answer ASAPP HELP URGENT WILL GIVE BRAINLIEST IF CORRECT C=(y-6)h solve for y The perimeter of a rectangle is 160 feet. If the length of the rectangle is 28 feet more than the width, what are the dimensions of the rectangle? Please help 30 points A recursive definition of an arithmetic sequence is shown below.a = 7an = an-1 + 3Which of the following expressions represents the nth term of this sequence?A. Ont3B.3n + 4C.O3n +7D.O7n +3 2. Explain the Bolshevik view of capitalism. The question at the beginning of todays reading is , In what ways do people use detectors why is it important to understand particles in order to invent detectors Who were the leaders of the United States and the USSR at the start of the Cold War? A. Franklin Roosevelt and Joseph Stalin B. Harry Truman and Joseph Stalin C. Franklin Roosevelt and Nikita Khrushchev D. Harry Truman and Nikita Khrushchev please help ill give 20 points!!! what feeling or images does the phrase brumal sleep suggest? Why?