Mathematics High School

Solve by Elimination:
x - 2y = 4
X - 1y = 2


its urgent

Answers

Answer 1

Answer:

x = 0 and y = -2

Step-by-step explanation:

x - 2y = 4 and X - 1y = 2

you mentioned elemination aka substraction

so you when substract x - x =  0  -2y -( -y) = -y and 4 -2 = 2

so - y = 2

or y = 2

now substitute the numbers

x + 4 = 4

x = 0

and try it with one of the equation  or sometimes trying on both of them can be very helpful

Related Questions

Please help me please

Answers

Answer:

B

Step-by-step explanation:

please can someone help me asap i should find the roots (zeros) of this equation:
f(x) = x^4 -6x^3 + 12 x^2 -8 x
please​

Answers

Answer:

1/2-1/2, 3

Step-by-step explanation:

Notice that the ratio of the first and second terms is the same as that between the third and fourth terms. So this cubic will factor by grouping:

Oh okie so I can see it in my car lol lol

CORRECT ANSWERS ONLY PLES ASAP!!!!! It costs $2 to spin the spinner shown below. If you land on an even number, you win $8. If you land on an odd number, you get nothing. What is the expected value of playing this game one time?




$8


$3


$1


$6

Answers

Step-by-step explanation:

2 is an even number so if everytime  u land on an even number u win $8 so we do this (8-2=6)

Value of playing is8

simplify 3(tan^2 theta - sec^2 theta)
a. 1
b. 0
c. -3
d. 3

*ITS NOT D*

Answers

Answer:

it's option c. - 3

Hope it will help :)❤

Answer:

c. -3

Step-by-step explanation:

The auditorium where the spring musical will be performed has 10 seats in the 1st (front) row. Each row behind the Ist row has 4 more seats than does the row in front of it.

how many seats are in the 7th row?

Answers

Answer:

38 seats

Step-by-step explanation:

10 + 4x = y

The answer is 38
Explanation.


Darnell bought a leaf blower priced at $437. Shipping and handling cost an additional 20%
of the price. What was the total cost of the leaf blower, including shipping and handling?

Answers

524 with 40 cents is the answer
The answer is 524.4 I am pretty sure

What is the mean of the values in the dot plot?



Enter your answer in the box.

Answers

Answer:

The mean is 46.

Step-by-step explanation:

To find the mean of these points add the values together. So that's one 40, two 41's, one 45, two 48's, three 49's and one 50.

40 + (2 * 41) + 45 + (2 * 48) + (3 * 49) + 50

Multiply what's in the parentheses.

40 + 82 + 45 + 96 + 147 + 50

Add, going from left to right

122 + 45 + 96 + 147 + 50

167 + 96 + 147 + 50

263 + 147 + 50

410 + 50

460

Now, divide that by how many dots there were (10).

460/10

The mean of the values in this dot plot is 46.

How do I figure this out?

Answers

it is 1 2 twelve I can end without 20 word my friend so deal with it

LOTS OF POINTS WILL GIVE BRAINLIEST

B and D are points on a circle, centre C.
AB is the tangent to the circle at B.
ADC is a straight line.
AB=3 cm.
AD= 2 cm.
The radius of the circle is 7 cm.
Find the value of y.


Answers

It should be 6 because of the 7.

54,675+33,548,000x+a=?

Answers

Answer:

33602675

Step-by-step explanation:

.Mariam went to the store to buy some apples. The price per pound of the apples is $6 per pound and she has a coupon for $2.25 off the final amount. With the coupon, how much would Mariam have to pay to buy 3 pounds of apples? Also, write an expression for the cost to buy p pounds of apples, assuming at least one pound is purchased.

Answers

Answer:

$15.75

$6p-$2.25

Find the zeros of the function

Enter the solutions from least to greatest.
g(x) = (x-2)(3x + 3)

lesser x =
greater x =

Answers

Answer:

lesser: -1

Greater: 2

Step-by-step explanation:

We need to figure out what values of x make it equal to 0

because it's all being mulitplied we just need one parathenses to equal 0

so we can set them equal to 0

which means we have

x-2=0

3x+3=0

Solve for x and get

2

-1

Line segmentsAB and XY are translated 2 units left and 3 units down to form line segments A'B' and X'Y'. Enter the distance, in units, between line segmentsA'B' and X'Y'.

Answers

Answer:

The answer is below

Step-by-step explanation:

The question is not complete, but I would show you how to answer it.

Transformation is the movement of a point from its initial location to a new location. Types of transformation are rotation, translation, reflection and dilation.

Translation is the movement of a point up, down, left or right. Translation is a rigid transformation, that is it preserves the shape and size of the figure. Types of rigid transformation are rotation, reflection, and  translation.

If the distance between Line segment AB and line segment XY is 2 units and then both line segments are  translated 2 units left and 3 units down to form line segments A'B' and X'Y'. The distance between the newly formed line segments A'B' and X'Y' would still be 2 units.

How many units long is CD? How do you know?

Answers

Answer:

4

Step-by-step explanation:

because i know

Tessa has $42 to spend at the county fair. Her admission
ticket cost $7.50. How much money could she spend on
games and food? Write an inequality to represent this
situation and solve.


can someone help me?

Answers

Answer

g is less than or equal to 34.50

Step-by-step explanation:

$42-$7.50=$34.50

Ms. Reiger’s students found a total of 16 bird feathers. The line plot shows the lengths, in inches, of the bird feathers found by the students
Look at the line plot, and then select the two correct statements about the bird feathers.


The difference between the lengths of the shortest feather and the longest feather is 318 inches.

A. The difference between the lengths of the shortest feather and the longest feather is 238 inches.

B. The combined length of the two longest feathers is 828 inches.

C. The combined length of the shortest feather and the longest feather is 738 inches.

D. The combined length of the shortest feather and the longest feather is 618 inches.

Answers

Answer:

B

Step-by-step explanation:

Sally is 4 years older than Brody. Evelyn is 3 times older than Brody. If Brody's age is represented by x, create an expression that represents the total age of all three people.
A.4x+4
B. 5x
C.5x+4
D.7x

Answers

Answer:

Its C. 5x +4

Step-by-step explanation:

The expression that represents the total age of all three people is f(x) = 5x + 4.

What is a mathematical function, equation and expression?function : In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function.expression : A mathematical expression is made up of terms (constants and variables) separated by mathematical operators.equation : A mathematical equation is used to equate two expressions.

Given is that Sally who is 4 years older than Brody. Evelyn is 3 times older than Brody.

Assume that Brody's age is represented by [x]. Then, the age of Evelyn will be (3x) and the age of Sally would be (x + 4). The expression that represents the total age of all three people is -

f(x) = x + (x + 4) + 3x = 5x + 4

f(x) = 5x + 4

Therefore, the expression that represents the total age of all three people is f(x) = 5x + 4.

To solve more questions on functions, expressions and polynomials, visit the link below -

brainly.com/question/17421223

#SPJ6

How do I solve 5x(3x2 + 2x - 1)

Answers

Answer:

10x+25

Step-by-step explanation:

what is 16y - u + 34x when x = 2 u = 14 and y = 3​

Answers

Answer:

102

Step-by-step explanation:

48-14+68

6x+9=-12
Can someone help me with this question

Answers

Answer:

-7/2

Step-by-step explanation:

Answer:  

-7/2

Step-by-step explanation:

Hope it helps

What is the slope of the line that passes through the points (-5, -7) and (4,−1)? in the simplest form

Answers

Answer:

2/3

Step-by-step explanation:

Use rise over run, (y2 - y1) / (x2 - x1)

Plug in the points, then simplify:

(y2 - y1) / (x2 - x1)

(-1 + 7) / (4 + 5)

6/9

= 2/3

So, the slope of the line is 2/3

Which of these problems could be solved using the equation 16x=80.

Answers

Step-by-step explanation:

D) Marisol has 80 baseball cards. that is 16 times more than her brother Ernesto has. how many baseball cards does Ernesto have?

9x-27 whats the answer

Answers

Answer:

The answer is 9(x-3).

Step-by-step explanation:

Answer:

-243

Step-by-step explanation:

Riley has 3 hours to play outside to play before diner. She spends 3/5 of that time playing outside how long does riley play outside

Answers

riley is gone to work 3/5 so step by step quicker

Answer:1.8 hours

Step-by-step explanation:

just devide and stuff

Mia is working two summer jobs, making $18 per hour lifeguarding and making $10 per hour washing cars. In a given week, she can work at most 13 total hours and must earn a minimum of $180. If xx represents the number of hours lifeguarding and yy represents the number of hours washing cars, write and solve a system of inequalities graphically and determine one possible solution.

Answers

Answer:

y ≤ 13 - x

y ≥ 18 - 9/5x

8 hours lifeguarding, 4 hours washing cars

(8,4)

Step-by-step explanation:

Hope this helps!

Find the Area of the Figure. Do not type in the units.

Answers

We need the figure to solve it

Please help due in 5 minutes !

Answers

Answer:

Step-by-step explanation:pentagon

Hexagon

Heptagon

Octagon

Nonagon

Decagon

I’m sorry if this is wrong

What are the two square roots for the number 81? *
(1) 27 and 3
(2) 9 and -9
(3) 40.5 and 2
(4) None of these

Answers

Answer:2

Step-by-step explanation:9 and -9 squared both are 81 because double negative makes a positive

ABCD contains the points: B(2,3) C(2,1) D(5,1). If the triangle is reflected across the x-axis, what
will B be?

Answers

Answer:

(2, -3)

Step-by-step explanation:

Here is my proof

If you reflect point B across the x-axis, the y-coordinate would change from 3 to be a -3....so B will now be at (2, -3)

What's the solution for the system graphed below?

Answers

Answer:

Step-by-step explanation:

the intersecting pair is (-2, -3)

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