Mathematics High School

use elimination method to solve the system of equations -x+y=7 and x+y=1

Answers

Answer 1

Answer:

(x, y)= (-3, 4)

Step-by-step explanation:

eliminate the variable by adding the equations

Related Questions

Whats the anwser to 3 * 9/10PLZ HELP THIS IS DUE TODAY !!!!!

Answers

Answer:

2.7 or in fraction form 2 7/10

Step-by-step explanation:

yes

3*9= 27
27/10=2.7
I have to type random stuff to send this but uhh give me a thanks or brainliest pls

3(2x+d)+c(x+5)=10x+17 find c and d

Answers

Answer:

c = 4, d = - 1

Step-by-step explanation:

Expand and simplify left side, then compare coefficients of like terms on the right side, that is

3(2x + d) + c(x + 5) ← distribute parenthesis

6x + 3d + cx + 5c

= x(6 + c) + 3d + 5c

Compare terms with those on the right side

coefficients of x- terms

6 + c = 10 ( subtract 6 from both sides )

c = 4

--------------

constant terms

3d + 5c = 17, that is

3d + 5(4) = 17

3d + 20 = 17 ( subtract 20 from both sides )

3d = - 3 ( divide both sides by 3 )

d = - 1

The value of c and d if 3(2x+d)+c(x+5)=10x+17  is 4 and -1 respectively

Given the equation:

3(2x+d)+c(x+5)=10x+17

Expand the bracket

6x + 3d + cx + 5c = 10x + 17

Collect the like terms

6x+cx + 3d + 5c = 10x + 17

x(6+c) + 3d + 5c = 10x + 17

Compare the coefficients of x on both sides

x(6+c) = 10x

6+c = 10

c = 10 - 6

c = 4

Similarly:

3d + 5c = 17

3d + 5(4) = 17

3d + 20 = 17

3d = 17 - 20

3d = -3

d =-3/3

d = -1

Hence the value of c and d if 3(2x+d)+c(x+5)=10x+17  is 4 and -1 respectively

Learn more here: https://brainly.com/question/945593

Yoo Helpppp meee outt

Answers

Answer:

I going to go with B $2378.30

Answer:

I going to go with B $2378.30

Step-by-step explanation:

help me please. Translate the description below as an algebraic expression:

half the quotient of p and 11 ​

Answers

Answer:

try this

Step-by-step explanation:

1/2 (p/11)

slash is the dividing sign

Answer:

( p ÷ 11) ÷ 2

Or

1/2 (p ÷ 11)

Step-by-step explanation:

Half the quotient of p and 11

"the quotient of p and 11" signifies that you have to divide p by 11. And "half the.." signifies that you have to divide the quotient of p/11 in half

2. The difference between a number and three is no more than two.

Answers

Answer:

x-2≤2

Step-by-step explanation:

Plz, answer this question plz!

Answers

Answer:

The answer is

F: 362,880

Step-by-step explanation:

9 X 8 X 7 X 6 X 5 X 4  X 3 X 2 X 1

You multiply 9 all the way back to 1 giving you the answer of 362,880

F(t) = 212 - 6t
What is the value of t when F(t) = 140​

Answers

Answer: -628

Step-by-step explanation:

F(140) = 212 - 6(140)

F(140) = 212 - 840

F(140) = -628

please help 13 points

Answers

Answer:

.

Step-by-step explanation:

Which triangle is a translation of triangle X?
triangle A
triangle B
triangle C
triangle D

Answers

Answer:

triangle b

Step-by-step explanation:

triangle b has the same dimensions and corresponding angles. which means it is a rigid transformation which is what a translation is

Answer:

Triangle b

Step-by-step explanation:

The sum of half a number, n, and 15 is 24. What is the value of the number n? Type your answer in the blank below.

1/2 n + 15 = 24

Answers

An easy way to do this is subtract 15 form 24 which will look like this 1/2n=24-15
Which gets you 1/2n=9
Then you multiply the equation by 2 to get rid of the 1/2 which gets you just N=18

Write an
explicit formula for
an,
the nth
term of the sequence 39, 41, 43, ....

Answers

Answer:

2n + 37.

Step-by-step explanation:

an = a1 + d(n - 1)

Here a1 = 39 and d = 2

an = 39 + 2(n - 1)

= 39 + 2n - 2

= 2n + 37.

A student is solving the equation
4
(
x
−
5
)
=
−
6
x
−
7
+
2
. Which describes a first step the student could use to solve the equation correctly?

Answers

first option.

you should usually distribute first. 4 times x would be 4x, and 4 times -5 is -20.

Answer:

4(x−5)=−6x−7+2

first step open bracket and add or subtract no.

4x-20=-6x-5

put common in each side

4x+6x=-5+20

10x=15

x=15/10=3/2

first one is your answer

1. A cylinder and its dimensions are shown in the diagram. What is the
lateral surface area of the cylinder in square inches? Round to the
nearest hundredths. (TYPE YOUR ANSWER AS A NUMBER ONLY)
18 in
27 in

Answers

Answer:I’ll ask my my teacher

Step-by-step explanation:

Answer:

1123

Step-by-step explanation:

32 vfesjv  sfv bs nvsn fv

A teacher lives 8 miles from school. She drives a 2015 Chevy Camaro that gets 19 miles per gallon of gas. How much fuel will she need to get TO AND FROM work for the week?

Answers

Answer:

Step-by-step explanation:

Technically we cannot solve this without knowing how many days a week that she works.

f=(16mi*d)(gal/19mi)

f=(16/19)d

We would have to assume that she works a certain amount of days. If we assume she works every day

f=7(16/19)=112/19, approximately 5.9 gal

Please help! I filled in a little circle bc i thought it was right XDD

Answers

That’s correct, as you’re reversing the positive on both sides for that number. Nice!
1st one is right.

The 4th and 2nd ones are obviously wrong. And the 3rd one is wrong too because you can’t add 3 1/5, because your trying to get rid of it.

HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP

Two numbers have a sum of 76 and a difference of 8. What is the larger number?

A. 34
B. 46
C. 68
D. 42

Answers

Answer:

46,42

( I hope this was helpful) >;D

Paul surveyed 200 randomly selected people in the mall and asked them what genre of movie they prefer. Their
results are shown in the bar graph.

Answers

D. This is because after you narrow it down and add it together science fiction and comedy is 30 percent

Brenna decided to purchase 4 points in order to lower the interest rate on her $175,000 mortgage. How much additional money does she need to bring to closing for the points she wishes to purchase?

Answers

Answer:

$6000

Step-by-step explanation:

Answer: $7,000

Step-by-step explanation:

Confirmed

What is the slope of the line in the graph?
-4/3
-3/4
3/4
4/3

Answers

Answer:

-3/4

Step-by-step explanation:

If you take two points, the rise is 3. Also, the change in y is 4. Since the line is going downwards from left to right, it has to be negative.  

what quadrant is the coordinate -3,2 in

Answers

the second one mark me brainliest please if you have any more questions please wow

Answer: the 2nd quadrant

Step-by-step explanation:

The first quadrant

(X,Y)

The second quadrant

(-X,Y)

The third quadrant

(-X,-Y)

The fourth quadrant

(X,-Y)


4x - 3y = -3
4x + y=17
The solution is....

Answers

1. Subtract the second equation from the first and solve for y: 0 - 4y = -20 => y=5
2. Substitute y=5 into one of the equations and solve for x: 4x - 3(5) = -3 => 4x = 12 => x=3

So the solution is (x, y) = (3, 5)

HELP DUE IN 10 MINS! Determine whether the triangle described is right, obtuse, or acute. Show work to justify your answer.


20, 21, 29


This triangle is a obtuse, acute, or right triangle, because blank is ,=, <, >, to blank?

Answers

Answer:

Right triangle

Step-by-step explanation:

Given 3 side lengths of a triangle.

Let's test if this is right triangle by using Pythagorean theorem:

20² + 21² = 29²400 + 441 = 841841 = 841

Yes, the triangle is right

math pls help and thanks​

Answers

Answer:

12

Step-by-step explanation:

4 is half of 8

12 is half of 6

8. You throw a ball downward 40 feet per second from a building
that is 256 feet above the ground. How long will it take
the ball to hit the ground?

Answers

Answer:

6.16?

Step-by-step explanation:

Not completely sure but if you divide 256 by 40 you get six remainder 16 not sure if I did it right so sorry if I am wrong

A. 8.06
B. 8.1
C. 8
D. 65

Answers

Answer:

its c

Step-by-step explanation:

question is in photo, giving more points out

Answers

Answer:

atleast 95 degrees

Step-by-step explanation:

what is the value of the expression
(r − 29) ÷ 7

Answers

Answer: Answer is 8! Brainleist pls :D

It actually equals to 4 remainder 1

2. R(1, 1), 5(1,7), Т(5,7), U(5, 1); k =
45
у
о
Help

Answers

(5,7) because when you divide that’s the answer you get

Use long division to divide 12x3 - 11x² + 9x + 16 by
4x + 3

Answers

Answer:

THE ANSWER IS 3×2-5×+6

Step-by-step explanation:

HERE IS A PIC OF THE WORK

please help!!

In a survey, 90% of dentists recommended sugarless gum for their patients who chew gum. If the total number of dentists surveyed was 80, how many dentists recommended chewing sugarless gum?
(Hint: What is 90% of 80?)

Answers

Answer:

72

Step-by-step explanation:

80x.90= 72

Answer:

72 is your answer

Step-by-step explanation:

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