Mathematics High School

Solve the system by eliminating one of the variables by addition or subtraction

2x-y=4
3x+y=6

Answers

Answer 1

Answer:

(2,0)

Step-by-step explanation:

2x-y=4 equation 1

3x+y=6 equation 2

5x=10 eliminate y by adding equations

x=2

solve for y

2x-y=4

2(2)-y=4

4-y=4

-y=0

y=0

check answer:

3x+y=6

3(2)+0=6

6=6

Related Questions

What is the slope of y = −4x + 5?
i. 4 ii. 5 iii. − 4 iv. 4/5

Answers

y=-4x+5

Compare to the slope intercept form of line y=mx+b

Slope

m=-4

Hence slope is -4

Q23. Look at the image

Answers

Answer:

B. First term = 5, Common difference = -3

Step-by-step explanation:

The first term is f(1) = 8 - 3(1) = 8 - 3 = 5.

The common difference is the coefficient of  n.  Another way to see this is to compute the second term, f(2) = 8 - 3(2) = 8 - 6 = 2.  The second term is 3 less than the first.  The common difference is -3.

The sequence goes 5, 2, -1, -4, ...

What is the y intercept of the line that passes through the points (-2,4) and (-1,7) ?

Answers

Answer: (0,10)

Step-by-step explanation:

im not 100% sure i did this correctly
but for the y intercept of the line that passes through both those points i got (0,10)
Hope this helps

Which of the following is equivalent to 3^4?
1. 12
2. 81
3. 7
4. 64

Answers

i think the answer is 12 because 3 times 4 is 12

Answer:

81, Option 2.

Step-by-step explanation:

[tex]3^{4}[/tex] means 3 x 3 x 3 x 3, that is 3 multiplied 4 times with itself.

Here's how to do it:-

3 x 3 = 9

9 x 3 = 27

27 x 3 = 81

So, [tex]3^{4}[/tex] would be 81, Option 2.

Which set of ordered pairs represents y as a function of x?
O {(-4, 0),(-2,2).(-4,-2), (-2, 4),(-4, - 4)}
{(0,4), (1,7),(1,10), (2, 13), (3, 16)}
{(3, 1), (3, 2), (3, 3), (3, 4), (3,5)}
{(3, 3), (-1,-1),(-2,-2), (4,4),(-4,-4)}
I need the answer ASAP!!!

Answers

I think it is the 4th one :)
should be the third one

An object moves in simple harmonic motion with amplitude 15m and period 4 minutes. At time t=0 minutes, its displacement from rest is , and initially it moves in a negative direction. Give the equation modeling the displacement d as a function of time t

Answers

No idea
Step by step explanation

Please help! ! ! 10 points !!

Answers

Answer:

the factor is 2 because 7x2 is 14 and 3x2 is 6

Isabel has a basket of fruit with 3 apples, 6 bananas, 5 oranges, 4 pears, and 2 peaches. She wants to share the fruit with 4 of her friends. How many pieces of fruit will each person get?

Answers

Answer:

15/182

Step-by-step explanation:

the 1st one is 5/14 and the 2nd one is 3/13

5/14*3/13 = 15/182

The scale shown is not balanced.

Drag base ten blocks to the box to show the amount that x needs to be to balance the scale.

HELP PLEASEEEEE

Answers

Answer:

1 (100block)

5 (10block)

3 (1block)

Step-by-step explanation:

221-68=153

1x100=100

5x10=50

3x1=3

The amount that x = 53 needs to be to balance the scale.

What is an equation?

The term "equation" refers to a pair of algebraic expressions with the same value and the sign "=" in between.

We have an equation,

221 = x + 68

x = 221 - 68

x = 153

In 153,

1 is in place of hundred 100, 5 is in the place of 10 so, 50.

Therefore, x = 53 is the amount that needs to be to balance the scale.

To learn more about the equation;

https://brainly.com/question/12788590

#SPJ2

find the missing side length of the right triangle below. Round your answer to the nearest tenth.

Answers

Answer:

24.4

Step-by-step explanation:

14² + 20² = c²

196 + 400 =  596

√596 = 24.4

Please help ASAP!! It’s due tomorrow please!!

Answers

Answer:

250 lifeguards

(P.S, i dunno if i got it right or not should be correct tho)

Step-by-step explanation:

15 km divide 0.06 for every life guard. therefore, there are 250 lifeguards

There will be 9 lifeguards

.6 x 15 = 9

0.06 x 15 = 0.9

0.9 as a whole number = 9

Therefore There will be 9 lifeguards

Which number is the c losest approximation of v39?
o 6.2
o 6.5
o 7.5
o 7.7

Answers

Answer:

6.2 would be ur awnser ( mark as best awnser

find the value of x, y, and z

Answers

Answer:

B

Step-by-step explanation:

The diagonals of a rhombus are at right angles to each other, then

∠ 1 = ∠ 2 = ∠ 3 = 90° so

10x = 90 ( divide both sides by 10 )

x = 9

x + y = 90

9 + y = 90 ( subtract 9 from both sides )

y = 81

9z = 90 ( divide both sides by 9 )

z = 10

Shape B is 2 times the size of Shape A. Which is the perimeter of Shape B? (1 point)

Answers

Answer:

16

Step-by-step explanation:

multiple 1 and 4 by 2 and you will get 2 and 8. Then multiply 2 and 8 and you get 16

The sides of a cube are numbered 4, 5, 6, 7, 8, and 9. What is the probability of rolling a 6?
A. 6/9
B. 1/9
C. 1
D. 2/3
E. 1/6

Answers

Answer: The probability of it is 1/6

Step-by-step explanation:

Can somebody help me out my grade are bad

Answers

Answer:

3, 2, 6

Step-by-step explanation:

from left, top, and bottom

Answer:

2/6

Step-by-step explanation:

Convert 1/2 to something similar to 1/6

1 times 3 is 3

2 times 3 is 6

so now do 3/6 -1/6

Dont change the denominator at all, just subtract the numerator. By doing that you get 2/6

HELP ME NOW I NEED HELP

Answers

Zeros:

x = -11

x = 11

Positive zero: 11

Find a:c and a:b:c of the following
b) a:b = 4:5,b:C = 3:5​

Answers

Answer:

look at the picture i sent

5*x/2 = x>7
Answer this please

Answers

Answer:

5x - 2 = 7

5x = 7 + 2

5x = 9 (divide both sides by 5 to get x)

5x/5 = 9/5

x = 1.8

Step-by-step explanation:

If i = V-1, then (3 – i)(3+ i) =

Answers

9-i^2
9-v^+2v-1
-v^2 +2v +8

Find the surface area of the triangular prisms below.

Answers

Surface are is the following
10.) 730 m^2
11.) 57.1 mm^2

Can somebody please help me with this, I like actually don't know.

Write this out as an algebraic expression
6 times the sum of r and 9

Answers

answer:

make sure to write "x" not as a variable

Step-by-step explanation:

6 x r + 9

Answer:

6(r+9)

Step-by-step explanation:

A number outside of a parenthesis is the symbol for multiplication.. so..

6(

"Sum" is the vocabulary used for "the answer you get after adding"

so.. you have to add..

6(r+9)

and close the parenthesis of course.:)

Help, please.
The (blank) family’s laptop has the greater initial resale value.

During the first four years, the resale value of the Sawyer family’s laptop decreases at an average rate (blank) the resale value of the Ruiz family’s laptop.
First blank: Sawyer, Ruiz Second blank: Faster than, slower than, equal to

Answers

Answer:

His laptop decreases

Step-by-step explanation:

It decreases at a rate of 12% and in 4 years will be worth 52% of the original price.

Answer:

First blank: Sawyer

Second blank: faster than

So this is for my academy class bc we have been learning about kindness and things like that so I am going to give everyone who is reading this a quote to help you get through your r day or night

“You’re off to great places, today is your day. Your mountain is waiting, so get on
your way.”

Answers

Answer: it did mine god blesses you

Step-by-step explanation:

Answer:

Step-by-step explanation:

it did brighten my day

PLZZ HELPLPPPPpppppppppppppppppp

Answers

I think the answer is 10

ASAP ILL GOVE 10 POINTS
Ashwin has equal numbers of classical songs and pop
songs loaded on his personal music player. He has it set to
play songs on a random shuffle. Suppose Ashwin is
designing a simulation that could be used to estimate the
probability that the next three songs to play are all pop
songs
Which simulation design could Ashwin use to estimate the probability?
A Number cube
Let 1 = classical
Let 2 = pop
Ro
be three times. Repeat
B. Number cube
Let even number = classical
Let odd number = pop
Rollcube three times. Repeat
C. Random digits
Let 1. 2. 3 classical
Let 4, 5,0 = pop
Select three random digits. Repeat
D. Random digits
Let 1, 2, 3, 4,5 = classical
Let 6, 7, 8, 9 pop

Answers

Answer:

B

Step-by-step explanation:

Took the test on AP3X

Answer:

B. Number cube

Let even number = classical

Let odd number = pop

Rollcube three times. Repeat

Step-by-step explanation:

Test approved

what is the distance between (-6, 4) and (-1, 4)

Answers

Answer: The distance between (-6, 4) and (-1, 4) is 5 units.

Step-by-step explanation:

The distance between the two points is 5

3. Let x = - and y =
0
Select all the expressions that have a positive value.
A. X. y
B.
D. x+y
EX - y
F. y - x

Answers

Answer:

answer is d

Step-by-step explanation:

1. 6 times a number is 30, what is the number?

2. 5 less than twice a number is 19, what is the number

Answers

5 for the first one and 7 for the second hope this helps

PLEASE HELP 35 POINTS
Find the value of x in the triangle shown below.

Answers

Answer:

B sqrt(17)

Step-by-step explanation:

Using pythagoras theorem

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