Mathematics High School

Solve the system of equations.
7x + 6y = -1
--x + 2y = 3

Answers

Answer 1

Answer:

X=-1

Y=1

Solve using Elimination.

Step-by-step explanation:

Multiply the second equation by 7.

The two equations are now:

7x+6y=-1

-7x +14y=21

Combine the two equations

7x and -7x cancel each other out, 14y+6y is 20y, and 21 - 1 is 20.

The equation is now

20y=20, divide 20 on both sides to get Y=1.

Now, substitute 1 as Y in the second equation for -x+2(1)=3

-x+2=3, can be simplified, by subtracting 2 from both sides. Giving us

-x=1.

Divide both sides by -1 for X=-1

Final answers being X=-1, Y=1

Hope this helps! Let me know if you have further questions!

Related Questions

I will give brainliest if you answer all correctly ​

Answers

Answer:

I think 13 is C

Step-by-step explanation:

71+52= 123

180-123= 57

Use the Difference of Squares rule to multiply (x−6)(x+6) .
PLEASEE HELPP

Answers

Answer:

x^2-36

Step-by-step explanation:

(x-6)(x+6)

x^2-6x+6x-36

x^2-36 <--- This is your answer

evaluate the sum of 1.9 and 305.52.​

Answers

Answer:

307.42

-

add them together

Answer:

Step-by-step explanation:

u add   1.9+305.52=307.42

Factor the quadratic expression completely. 6x^2−13x+6

Answers

Answer:

(2x - 3)(3x - 2)

Step-by-step explanation:

(2x - 3)(3x - 2) = 6x^2 - 9x - 4x + 6 = 6x^2 - 13x + 6

thank, 5 star, and brainliest if helpful!

She took the escalators up to the gym. This is an example of ... verbal irony situational irony dramatic irony ​

Answers

Answer:

situational irony

its in a situation

(x + y = 10
(x + y = 12

Answers

Answer:

{x,y} = {11,1}

Step-by-step explanation:

How many solutions exist for the given equation?
} (x + 12) = 4x – 1
zero
one
two
infinitely many

Answers

Answer:

The given equation has one solution.

Step-by-step explanation:

Given equation is:

(x+12) = 4x-1

We will solve the equation to check how many solutions it has.

x+12 = 4x-1

Adding 1 on both sides

x+12+1 = 4x-1+1

x+13 = 4x

Subtracting x from both sides

x-x+13=4x-x

13 = 3x

x = 13/3

Hence,

The given equation has one solution.

Lo siento, solo voy a despotricar en español. Estoy tan cansado y realmente no quiero hacer nada, y todavía tengo Zooms para hacerlo, si alguien quiere hablar, estoy aquí :(

Answers

Answer:

hola yo estoy aqui contigo

HELP ME! thank youu!

Answers

Answer:

y=51(Alternate interior angles)

z=40(Alternalte interior angles)

x=89(Sum of angles in a triangle)

I need the value of A

Answers

Since it’s equilateral and all triangles add up to 180 degrees
3(3a-9)=180
3a-9=60
3a=51
a=17
So the value of A is 17 degrees

Find the area of this semi-circle with diameter, d = 58cm.
Give your answer rounded to 2 DP.

Answers

Answer:

The area of the semi-circle

                                  A = 1320.37 cm²

Step-by-step explanation:

Explanation:-

Given the diameter of the circle 'd' = 58cm

The radius of the circle 'd' = 2r

                                       [tex]r = \frac{d}{2} = \frac{58}{2} = 29[/tex]

The area of the semi-circle

                           [tex]A = \frac{1}{2} \pi r^{2}[/tex]

                           [tex]A = \frac{1}{2} (3.14) ((29))^{2}[/tex]

                          A = 1320.37 cm²

yea and why for solving my question it really helped :D Click on my text there is a picture

Answers

Answer:

A (1, 3)

Step-by-step explanation:

The point where the two lines intersect is the only solution

That is (1, 3) is the solution of system of equations shown in graph

Hello guys I really need help is anyone available please and ty

Answers

To find the area of a triangle, you have to multiply the height and the base length, and divide that by two.

In this question, the height is 3 square units and the base length is 4 square units.

Therefore, to find the area, you must multiply 3 by 4, which is 12, and then divide this by 2, which is 6.

So the area of this triangle is 6 square units.

The table shows the blood type of 75 donors after a one-day blood drive. Based on the result what is the chance that a random donor has a type A blood

Answers

Answer:

The answer will be A

Step-by-step explanation:

So 33 I hope this helps!

Answer:

11/25

Step-by-step explanation:

I-ready 2022

PLz help me and show your work.

Answers

[tex]5 \sqrt{18} - \sqrt{32} \\= 5 \sqrt{9 \times 2} - \sqrt{4 \times 4 \times 2} \\ = 5 \times 3 \times \sqrt{2} - 2 \times 2 \times \sqrt{2} \\ = 15 \sqrt{2} - 4 \sqrt{2} \\ = \boxed{11 \sqrt{2} }[/tex]

11√2 is the right answer.

Aubrey invested $7,100 in an account paying an interest rate of 5.6% compounded quarterly. Assuming no deposits or withdrawals are made, how much money, to the nearest ten dollars, would be in the account after 19 years?

Answers

The amount of money in Aubrey's account after 19 years will be $20,424.

What is compound interest?

Compound interest is the interest on a loan or deposit calculated based on the initial principal and the accumulated interest from the previous period.

We know that the compound interest is given as

A = P(1 + r)ⁿ

Where A is the amount, P is the initial amount, r is the rate of interest, and n is the number of years.

Aubrey invested $7,100 in an account paying an interest rate of 5.6% compounded quarterly.

Assuming no deposits or withdrawals are made.

Then the amount of money in Aubrey's account after 19 years will be

P = $ 7100

r = 0.056/4 = 0.014

n = 4 x 19 = 76

Then we have

A = 7100 (1.014)⁷⁶

A = $ 20,424

More about the compound interest link is given below.

https://brainly.com/question/25857212

#SPJ1

Consider an experiment where a person flips a coin and records the result over multiple trials. The theoretical probability and the experimental probability and the experimental probability are compared at certain times during the experiment. during which trials can we guarantee that the experimental and theoretical probabilities will not be equal?

Answers

Answer:

It would be at the beginning of the trials

Step-by-step explanation:

Probabilities are
one.
A. sometimes greater than
B. never equal to
C. always equal to
D. sometimes less than

Answers

By definition, the probability, p, of an event should lie between zero and 1.

When p = 0, the event will definitely no occur.

When p=1, the event will definitely occur.

Therefore 0 ≤ p ≤ 1.

Answer:

c. Probabilities are sometimes less than

z= -y + m/x

Solve for x


Please show work.

Answers

Answer is a. You are trying to get x so that would be your answer “x=“ then you have Z and y left. This is still going to be a fraction since there is that line there still and won’t move. M is independent so that will be the denominator. You now have +y-z. This will then be on top and the reason why it’s on top is because most equations have the expression on top so it’s a numerator.

Solve the triangle if a = 40 and B = 40°.

Answers

If the question is asking to look for the third angle, given angle a being 40° and angle b being 40° as well, then we must figure out the total ° that the triangle is (internally), which is 180°.

180 - (40 + 40)

180 - 80

100° is what angle C is

I NEED HELP ASAP!!! please show work

Answers

what’s ur problem???????

what is the slope & how did you get your answer?

Answers

Answer:

The slope is 2

Step-by-step explanation:

Using the slope formula [tex]\frac{y2-y1}{x2-x1}[/tex]

[tex]\frac{-7-(-8)}{-14-(-16)}[/tex]=[tex]\frac{1}{2}[/tex]= 2

The slope is 2

help please!
parallelograms

Answers

Answer:

4

Step-by-step explanation:

C is equal to A because a parallelogram has opposite angles. So C is 83 degrees. SO 20 times something plus 3= equals 83. This something is 4.

Could you please help with this?

Answers

Answer:

ummm it is too blurry even if you zoom sorry mate

Step-by-step explanation:

please help me with number 4 it’s been due

Answers

Answer:

1. 4y = 3x - 8

2.y-7 = -2(x + 4)

Step-by-step explanation:

1. The general equation form is;

y = mx + b

m is slope b is y-intercept

so we have;

y= 3/4x - 2

Multiply through by 4

4y = 3x -8

2. The point-slope form is;

y-y1 = m(x-x1)

y-7 = -2(x + 4)

when you add 18 to 1/4 of a number, you get the number itself

Answers

False. Let's say you add 18 to 1/4 of 1. That would result in 18.25.

Answer:

1/4*24+18=24

Step-by-step explanation:

1/4x+18=x

1/4x-x=-18

-3/4x=-18

x=-18/(-3/4)

x=-18*-4/3

x=24

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

1/4*24+18=24

I am a 3 digit number. The sum of my digits is 14. My ones place is 3 times as much as my hundreds place.

Answers

Answer:

329

Step-by-step explanation:

Surveys get more accurate with larger sample sizes. You want an accurate survey, but your cost per respondent is $3
and your budget is $1,000. How many respondents can you survey?
ОООО
a) 333
b) 353
c) 533
d) 575

Answers

Well 1000 divided by three would be 333 max amount but u will have 1 dollar left over

Decrease £16855.21 by 3.5%
Give your answer rounded to 2 DP.

Answers

Answer:

Step-by-step explanation:

Find 5% of £16855.21 by 3.5%

5%=842.7605

1%=168.5521

0.5%=84.27605

168.5521+168.5521+168.5521+84.27605=

£16855.21-589.93235 =16265.27765

16265.28 is the answer rounded to 2dp

For this graph, mark the statements that are true.

A. The range is the set of all real numbers greater than or equal to zero.

B. The domain is the set of all real numbers greater than or equal to zero.

c. The domain is the set of all real numbers.

D. The range is the set of all real numbers.

Answers

The only one that’s true there is A. Domain refers to x values and range is y values. Your domain is between -1 and 3 and your range starts at zero and increases infinitely upward.
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