Use elimination to solve each system of equations. 1. x + y = 4 x – y = 7

Answers

Answer 1

Answer:

Step-by-step explanation:

1(x+y=4)

-1(x-y=7)

x+y=4

-x+y=-7

x-x=4-x

-x=x=-7+x

4-x=-7+x

4-x-x=-7

4-2x=-7

-2x=-7-4

-2x/-2=-11/-2

x=5.5


Related Questions







Write the ratio of corresponding sides for the similar triangles and reduce the ratio to lowest terms.
30
20
M
16
a.
16 24
8
15
30
20
b
16
24
4
-
20
30
5
C
16
20
24
30 3به ایا امه
d.
15
30
16
20
24
< Previous Activity

Answers

Answer: its d

Step-by-step explanation:

Find the total cost of buying a product that cost $12 if it is 25% off. DO NOT PUT A $. Only numbers.

Answers

Answer:

the answer will be 9 dollars

Answer:   9

Explanation:

The discount of 25% off means you save 0.25*12 = 3 dollars, meaning the final cost is 12-3 = 9 dollars.

Or you can think of it like this: if you save 25%, then you still pay the remaining 75%. So 0.75*12 = 9 dollars is the total cost.


Answer questions one through six, show your work.

Answers

Answer:

1) 36, 2) 14, 3) 19, 4) 18, 5) 3, 6) 117

Step-by-step explanation:

1)  6(7) - 3(2)   2)  (7)(4)/2   3)  (7) + |2(7) - (2)|   4)  6(5) - 4(3)   5)  [(4) + (5)]/3  

    42 - 6             28/2            7 + |14 - 2|               30 - 12            9/3

    36                   14                7 + 12                      18                    3

                                               19

6)  (4) + [(5)^3 + (3)] - 15

     4 + (125 + 3) - 15

     4 + 128 - 15

     132 - 15

     117

Find the slope of a line parallel to 3y - 6x = 9
A. 2
B. 6
C.9
D.-6

Answers

the answer is A :)
hope this helped

SOLVE THISSS (3x+6)/3=-1

Answers

Answer:

x = −3 TRUSSSSSSTTTT MEE

Step-by-step explanation:

THE PERSON ABOVE ME SAID -3

What is 200% of 190?

Answers

380......................

Simplify
hurry please !! :)

Answers

Answer:

4 square root of 5

Step-by-step explanation:

PLS HELP
What is the slope of the linear function

y=3/2x +3

Is it

3

-3

3/2

-3/2

Answers

3/2
The slope is always “m” in y=mx+b so the number in front of the x—in this case 3/2. b (3 in this case) is the y-intercept
3/2

i hope this helps!!

Y greater than or less than 1/4 X + 2

Answers

Answer:

y[tex]\geq[/tex]1/4x+2

Step-by-step explanation:

Find the missing length of the similar figures.

Find the distance between Riverside and Milton if they are 12 cm apart on a map with a scale of 4 cm : 21 km.

Answers

Answer:

63 km

Step-by-step explanation:

divide 12 by 4 =3

multiply 3 by 21 which is 63.

63 km is the right answer

10x -9y=-14
-5x+6y=16

Answers

Answer:

x=4 y=6

Step-by-step explanation:

A two digit number is such that, the sum of its digit is 13.When the digits are interchange, the original number is increased by 9. Find the original number.​

Answers

Answer:

Concept: Mathematical Representation

You have a two digit # __ The sum of the two digit # = 13The original # increased by 9 Hence we must find values that sum to 13. *Note they must be independently standing.8+5, 9+6, 7+6 , 6+7 , and etcThe value must also increase by 9 So logically it would be any result that when switched that value would be 76-67= 9.So the value must be 67

Find each product. Write your answer in standard form.
5. (3a - 3)(5a + 5)

Answers

Hello,

The answer should be 15a^2 - 15
This picture should explain the steps.
Hope this helps!!
Brainliest?

A carpenter measures the diagonals of a piece of wood. In rectangle EFGH, EJ=26 in. Find FH.

Answers

Answer:

36

Step-by-step explanation:

Well duh

You are in kindergarten!

The total charge for a taxi ride includes an initial fee of $2.75 plus $2.25 for every 1/2
mile traveled. The ride cost him $56.75. How many miles did he travel in the taxi?

Answers

Answer:

12 miles

Step-by-step explanation

56.75 - 2.75 = 54

1/2(54/2.25)

The diameter of a circle measures 14 m. What is the circumference of the circle?
Use 3.14 for n, and do not round your answer. Be sure to include the correct unit in your answer.

Answers

Answer:

Step-by-step explanation:

The circumference is either pi*d or 2 pi r

Use pi*d

3.14 * 14 = 43.96

Answer:

43.96 m

Step-by-step explanation:

[tex]C = \pi \: d = 3.14 \times 14 = 43.96 \: m[/tex]

Choose the situation in which the use of approximate numbers is most appropriate.
A)
planting trees in your yard
B)
ordering chairs for a kitchen table
purchasing barbeque to serve at a party
D
ordering uniforms for the high school basketbalt team

Answers

I good with D because i think it’s for Sure the right answer

Answer:

I would say that A  is your answer.

I think this because you would not need to have any specific number of trees in your yard, but you would need a specific number of things for all of your other options.

Step-by-step explanation:

You probably wouldn't approximate on how many chairs you put in a kitchen. What if you have a 5-member family and you aproxomate the chair number to 4. that would be useless so B is wrong.

C is wrong because you are only getting 1 barbaque. no approximation is nessisary for one item.

D is certainly wrong because you wouldn't want to leave out a uniform, that would mean one member of the basketball team may not get one.

what is the least common mulitple of 12,48,and 96

Answers

Answer:

2

Step-by-step explanation:

12/2= 6

48/2= 14

96/2=48

Answer:

Step-by-step explanation:

LCM of 12,48 and 96 is 96

A kite of area 40 m squarehas one diagonal 2 m longer than the other. Find the length of the diagonal

Answers

Answer:

Length of diagonal 1: 8 metersLength of diagonal 2: 10 meters

Step-by-step explanation:

Let d1 be the first diagonal and d2 be the second diagonal.

Given

Area = 40 square meters

And one diagonal is 2 meter longer than other

[tex]d_2 = d_1+2[/tex]

The formula for area of kite is;

[tex]Area = \frac{1}{2} * d_1 * d_2[/tex]

Putting the known values

[tex]40 = \frac{1}{2} * d_1 * (d_1+2)\\80 = (d_1)^2+2d_1\\d_1^2 +2d_1-80 = 0\\[/tex]

The expression is a quadratic polynomial

Factorizing

[tex]d_1^2 + 10d_1-8d_1-80 = 0\\d_1(d_1+10)-8(d_1+10) = 0\\(d_1+10)(d_1-8) = 0\\d_1 + 10 = 0\\d_1 = -10\\d_1-8 = 0\\d_1 = 8[/tex]

As the value of length cannot be negative so discarding the negative value

[tex]d_1 = 8d_2 = d_1+2 = 8+2 =10[/tex]

Hence,

Length of diagonal 1: 8 metersLength of diagonal 2: 10 meters

The sum of the speeds of two trains is 717.4 miles per hour. If the speed of the first train is 4.6 miles per hour faster than that of the second train, find the speed of each

Answers

Answer:

The second train speed is 356.4 miles per hour

And, the first train speed is  361 miles per hour

Step-by-step explanation:

The computation of the speed of each train is as follows

Given that

The Sum of the speed of two trains is 717.4 miles per hour

Let us suppose the second train speed be x

So for the first train, the speed is x + 4.6

Now the equation is

x + x + 4.6 = 717.4

2x + 4.6 = 717.4

2x = 717.4 - 4.6

2x = 712.8

x= 356.4

Therefore the second train speed is 356.4 miles per hour

And, the first train speed is = 356.4 + 4.6 = 361 miles per hour

pls help me!! I really need it!

Answers

The first one i believe?

evaluate (m/n) (x) for x= -3

m/n (-3)= ?

Answers

Answer:

1

Step-by-step explanation:

Got it right on edg 2020

Answer:

it's 1

Step-by-step explanation:

What is the value of X?

A: 125
B: 110
C: 35
D: 55

Answers

Answer:

The value of X is 35

Step-by-step explanation:

If I’m not right I apologize

HELP! 10 Point for helping!
Anwer now!
FAST!

Answers

Answer:

(8,3)

Step-by-step explanation:

Quadrilateral VWXY is a kite. Find the measure of angle W.

Answers

Answer:

88

Step-by-step explanation:

all the angles added up must equal 360 degrees add x and v and subtract with 360 and divide that by 2

what is a 888888890000+123321= _______???

Answers

Answer:

The answer is 888889013321

Step-by-step explanation:

I hope l helped you.❤❤❤Stay safe ❤❤❤

Answer:

The answer is 888,889,013,321

Step-by-step explanation:

Hope it's answer you plz mark as Brainlist

Can the equation below be used to solve the following? If not, explain why.
0.75x + 3 = 0.25x + 5.25

At an ice cream shop, customers pay $3.00 for medium ice cream plus $0.75 per topping. At a second ice cream shop, customers pay $5.25 for a medium ice cream plus $0.25 per topping. How many toppings would a customer have to order for the ice cream to cost the same at either shop?

Answers

Answer:

Yes; the equation and the problem do match.

Step-by-step explanation:

What is the solution to this equation? t =

Answers

Answer:

the person above me is correct it is 14.5

Step-by-step explanation:

:)

The solution to given equation is 91.

What is an equation?

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

The solution of an equation is the set of all values that, when substituted for unknowns, make an equation true.

The given equation is t-15=76.

Here, transpose 15 to RHS of the equation, we get

t=15+76

t=91

Therefore, the value of t from the given equation is 91.

To learn more about an equation visit:

https://brainly.com/question/14686792.

#SPJ6

"Your question is incomplete, probably the complete question/missing part is:"

What is the solution to the equation?

t-15=76

Which algebraic rule Describes the transformation

Answers

Answer:

The answer is D) (X,Y) ---(-y-x)

I think it’s d to because (x,y) can also be (-x,-y)

the length of each side of a square increases by 40%. by what percent does the area of the square increase?

Answers

Answer:

96%

Step-by-step explanation:

If you substitue values for the sides of the square, you can easily solve this problem.

If the side of each square was 10, then the area of the square would be 100. A 40% increase in side length would mean 10×.4 = 4 --> 10+4= 14.

14 would be your new side length meaning that the area would be 196.

From this, you can see that there is an increase by 96 from the original to the 40% increase. Since the value was initially 10, we can turn the 96 increase into 96 percent.

Answer:

40% iincrease

Step-by-step explanation:

A=l^2  (area of a square)      let the unknown dimensions be x                                                                                                                   Area of the original square without change=(x^2)                                                          Area of the square undergoing change =(1.4x^2)                                                            thus,% change=new-old/old*100%                                                                                   1.4-1.0=0.4*100=40%                                                                                    

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