Solve using elimination
x+y=7
x-y=-3

Answers

Answer 1

Answer:

I think it's 4

Step-by-step explanation:

if x+y is 7 and x-y is 3 then the answer is 4

Answer 2

Answer:

X=2, y=5

Step-by-step explanation:

X+y=7

x-Y=-3

————-

2x+ 0 =4

2x=4

x=2

solve for y using either equation

x+y=7

2+y=7

y=5

check answers by substituting x and y value in either equation:

x+y=7

2+5=7

7=7

or

x-y=-3

2-5=-3

-3=-3


Related Questions

Find the mean of 8, 6, 2, 4 graphically.​

Answers

Answer:

5

Step-by-step explanation:

Math problem please help

Answers

Answer:

The second one and the last one

Step-by-step explanation:

The third quadrant is of all negitive. The reason it is, is because it is on the left side of the x axis which makes it go lower like subtracting and dividing, then it is on the bottom half of the y axis which again is the same reason

i hope i helped and have a great day!

Answer:

B and D

Step-by-step explanation:

because in the 3rd quadrant both the x and y will be negative

1st quadrant all x and y are positive

2nd quadrant y are positive but x are negative

and in 4th quadrant x are positive and y are negative.

if brainiest is earned its greatly appreciated

if a function f(x)=x^3 has the domain {-3,0,2,4} what is it's range

Answers

27, 0, 8, 64
All u need to do is cube all the numbers in the domain

Step-by-step explanation:

Range is y-values

= {-27,0,8,64}

On a coordinate plane, a point is at (1, 2) and (5, 2). Find the distance between (1, 2) and (5, 2). The points lie in the same quadrant . The distance is .

Answers

Answer:

The points lie in

✔ the same quadrant

The distance is

✔ 4 units

Step-by-step explanation:

the same quadrant

4 units

The  distance between the two points (1, 2) and (5, 2) is 4 units. And both the points (1, 2) and (5, 2) lie in the same quadrant.

What is Distance between the two points?

Distance between two points is the length of the line segment that connects two given points.

Formula for the distance between two points

[tex]d = \sqrt{(x_{2}-x_{1} ^{2}) +(y_{2}-y_{1} ) ^{2} }[/tex]

According to the given question

We have

Two points

(1, 2) and (5, 2)

Let,

[tex](x_{1},y_{1}) = (1, 2)[/tex]

And, [tex](x_{2},y_{2} ) = (5,2)[/tex]

Therefore,

The distance between the points (1,2) and (5, 2)

= [tex]\sqrt{(5-1)^{2} +(2-2)^{2} }[/tex]

[tex]=\sqrt{(4)^{2}+0 }[/tex]

[tex]=4[/tex] unit.

Hence, the  distance between the two points (1, 2) and (5, 2) is 4 units.

Since, the x coordinate and y coordinate of both the points (1,2) and (5, 2) are positive. Therefore, they both lie in the first quadrant. Hence, the points lie in the same quadrant.

Learn more about distance between the two points here:

https://brainly.com/question/18296211

#SPJ2

What expression is equivalent to 1/3 x -1/5

Answers

1/15 (5x-3) is your answer
1/15 is the correct answer

Find the area of the triangle.

Answers

answer: 28

explanation: a= 8(7)/2 = 28

hope this helps :)

Are these two triangles congruent? *

Answers

Answer:

not congruent because none of the angles match

Answer:

Not Congruent

Step-by-step explanation:

No.

Two corresponding sides measure 8 and 4.

The other two corresponding sides measure 7 and 3.5.

In order to be congruent, each pair of corresponding sides has to be congruent.

Hello! It would help a lot if I had assistance with this question:

Answers

Answer:

Simplest form

simplest form is the correct answer

Help.Find the length of y

Answers

Here I hope this helps you.

geometry multiple choice question HELLPPP

Answers

Answer:

27/36

Step-by-step explanation:

tan C = opp/adj

For angle C, the opposite leg is 27,a nd the adjacent leg is 36.

tan C = 27/36

Answer: 27/36

helppp!
(7&8)Question 7 (1 point)
Susie has a bag of marbles of equal size in a bag. There are 8 blue marbles, 2 yellow marbles, and 5 red marbles. If she closes her eyes and
pulls out a marble at random, what is the probability the marble will be blue?
The probability Susie will pull a blue marble is

__%
Blank 1:

Answers

7: is about 53.3 percent in fraction 8/15
8: is about 16.3 percent in fraction 4/24 or 1/6

There are sixteen girls and twelve boys in block 7 math. At that rate, how many
girls would you expect in a group with two hundred ten boys?

Answers

Answer:280

Step-by-step explanation:

If the main group is a ratio of girls to boys 16:12 and the 12 is increased to 210 then do 210/12=17.5 and multiply the 17.5 by 16 to get 280


1. In the expression x2, 2 is what we call
A. Base
B. Exponent
C. Multiple ​

Answers

Answer:

hello! if you're talking about x², then 2 is what we call: B. Exponent.

2 would be the exponent. X would be the base.

If sin (x) =2/5 and tan(x) > 0, what is sin(2x)?


Answers

Answer:

sin2x = [tex]\frac{4\sqrt{21} }{25}[/tex]

Step-by-step explanation:

Given sinx = [tex]\frac{2}{5}[/tex] = [tex]\frac{opposite}{hypotenuse}[/tex]

Then the third side, the adjacent is found using Pythagoras' identity, that is

adj² + opp² = hyp²

adj² + 2² = 5²

adj² + 4 = 25 ( subtract 4 from both sides )

adj² = 21 ( take the square root of both sides )

adj = [tex]\sqrt{21}[/tex] , then

cosx = [tex]\frac{adj}{hyp}[/tex] = [tex]\frac{\sqrt{21} }{5}[/tex]

Using the double angle identity

sin2x = 2sinxcosx

         = 2 × [tex]\frac{2}{5}[/tex] × [tex]\frac{\sqrt{21} }{5}[/tex]

         = [tex]\frac{4\sqrt{21} }{25}[/tex]

A sphere has a radius of 4. what is the volume of the sphere? show your answer in terms of pi. I've been stuck on this for 4 days and I can't get it.​

Answers

Answer:

ok let me help

Step-by-step explanation:

v=268.08 sooo

r(radius) which is 4

v=4/3 n r³ =4/3×n×4³ = 268.08

Answer:

(256/3)π or 85.33π

Step-by-step explanation:

The equation for volume of a sphere is 4/3πr^3 where r = the radius

So the volume of the sphere in terms of pi would be

4/3(π)(4)^3

(4/3)(64)π

4 x 64 = 256

256/3 = 85.33

In terms of pi the answer is (256/3)π or 85.33π

yoo hii, could yall please help me!!

Answers

1. 9x-10 (I think)
2. B. x=6
12x - 6 - 3x + 4
Rewrite, if it helps, grouping like terms
12x - 3x -6 + 4
9x -2

For the second problem, the answer is B

-2x + 15 + 7x = 45
5x = 30
x = 6

Donna paid $3 to rent shoes and then $1 for each game she played at a bowling alley. She spent a total of $8 at the bowling alley.

Which equation can be used to find the number of games Donna played?

Answers

Answer:If shoes are for all games in row,  P = 2 + 3 g   If not,  P = 5 g  ,with g the number of games

Explanation: The price depends:if shoes are included for the whole games, you just have to pay them once and then you have to pay  

g g a m e s , so  P ( g ) = 2 + 3 g   Else, you have to pay  g s h o e s  and  g b o w l p a r t y ,so  

P ( g ) = 2g + 3 g⇔ P ( g ) = 5 g

Hope this helped hope you get a good score on your assignment/test/quiz/homework

-Tay did this

please help this is for a grade

Answers

Answer:

8.91

Step-by-step explanation: I hope this helps, I used my calculator to solve this for you, it is too complicated to explain.

Answer:

Step-by-step explanation:

((4x2.76)-1)÷2=5.02

choose the graph that solves system of equations.y=2x-6 y=-4x+3

Answers

Answer:

I love algebra anyways

The ans is in the picture with the  steps how i got it

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

Find the sum.
3/7+-1/7

Answers

Answer:

2/7

Step-by-step explanation:

set the equation as 3/7-1/7

by adding a negative to a positive you're subtracting

Answer:

2/7

Step-by-step explanation:

adding a negative is the same thing thing as subtracting a positive

so

3/7 + (-1/7) = 3/7 - 1/7 = 2/7

Can someone plz help me!!

Answers

Answer:

145°

Step-by-step explanation:

upper left angle inside triangle is 180-137, or 43°

lower right angle inside triangle is 180-(43 + 102) or 35°

'?' measures 180 - 35 which is 145°

What is the value of the number? -(-6)?

Answers

The value is positive six

Answer:

6

Step-by-step explanation:

-(-6)=6

whoever knows how to solve this please help!​

Answers

Answer:

418ft²

Step-by-step explanation:

Find the surface area of both triangle shaped sides.

8 * 12 = 96

96 / 2 = 48 (surface area of one triangular side)

48 * 2 = 96

Find the surface area of both square shaped sides.

10 * 10 = 100

100 * 2 = 200

Find the surface area of the rectangular base side.

12 * 10 = 120

Add everything together.

96 + 200 + 120 = 418

Best of Luck!

A student received a coupon for 17% off the total purchase price at a clothing store. Let c be the
original price of the purchase. Use the expression below for the new price of the purchase. Write an
equivalent expression by combining like terms.

Answers

c - 0.17c = 0.83c
When you write “c” at the start, or x or whatever, it has an understood (invisible) number 1. So you’re subtracting the decimal on the next variable from 1.

Tom had 114 dollars to spend on 9 books. After buying them he had 15 dollars. How much did each book cost?

Answers

Answer:

11

Step-by-step explanation:

114-15=99

99÷9=11

1. The following triangle has an area of 15.75 cm". What is the value of 2? 7 cm 4.5 cm 3.75 cm 1.125 cm 2.25 cm​

Answers


Triangle QRS has the angle measures shown.

m∠Q = (1x)°
m∠R = (3x)°
m∠S = (6x)°

The measure of the obtuse angle equals
(108°.)... :)

You have to solve the problem \frac{3}{4}-\frac{1}{8} ​4 ​ ​3 ​​ − ​8 ​ ​1 ​​ . After you make the denominators the same, what do you do?


FOR ALL MY POINTS

Answers

Answer:

If you are doing subtraction with fractions you need to make a common denominator and subtract the numerators from each other

ex. 1/2 - 1/3

make a common denominator (or find the least common multiple)

3/6 - 2/6

subtract the numerators

take 2 from 3 and put that on top.

Solution 1/2-1/3= 3/6-2/6= 1/6

stannis wrote a test that was out of 972. he got 6% of the questions wrong. how many wrong answers did he get

Answers

He got 58.2 questions wrong because

i dont get this pls help with steps asap!

Answers

Answer:

2.5

Step-by-step explanation:

it's the midpoint of XZ

2.5 is the correct answer

A baseball player earns $3 million in 2015. During the next 15 years, the earnings increase 4% each year.

a. Write an exponential growth model giving the earnings y (in millions of dollars) t years after 2015. Write the base of the model as a decimal.

An exponential growth model is y=
b. In which year will the player's earnings first exceed $5,000,000?

Answers

Answer:

[tex]y=3*1.04^{t}[/tex]

in 2029

Step-by-step explanation:

[tex]y=3*1.04^{t}[/tex]

[tex]when y=5\\t=\frac{ln(5/3)}{ln(1.04)} =13.02 ..[/tex]

have to round it up to 14 to exceed

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