Which of the following solutions solves the system?
7x+y= 6
x+ 2y = -1
A. (-1,0)
B. (1,0)
C. (1,-1)
D. None of these choices are correct

Answers

Answer 1

Answer:

C

Step-by-step explanation:

To find which of the given choices are solutions for the system of equations, we need to:

-substitute x, and y with the given coordinates and

-check if they are solutions for both equations.

7x+y= 6

x+ 2y = -1

A. (x = -1, y = 0) ❌

7(-1)+0= 6; -7 =6 FALSE

-1+ 2*0 = -1; -1= -1 TRUE

B. (x = 1, y = 0)❌

7*1+ 0= 6; 7= 6 FALSE

1+ 2*0 = -1; 1 =-1 FALSE

C. (x =1, y= -1)✅

7*1 -1= 6; 6=6 TRUE

1+ 2(-1) = -1; -1=-1 TRUE

D. None of these choices are correct ❌

because one choice is correct


Related Questions

I need help fast plz

Answers

Answer:

75

Step-by-step explanation:

Write a function that represents the relationship between X and y shown in the graph below

Answers

Answer:

y = 3x - 10

Step-by-step explanation:

Find the slope of the line by calculating the Rise/Run between any two points.  I picked (-2,-16) and (4,2).

The Rise is = (2-(-16))=18

The Run is = (4 -(-2)) = 6

Rise/Run is 18/6 = 3.  The slope is three:

y = 3x + b

b is the y-intercept, the value of y when x=0.  b is - 10 in this graph.

y = 3x - 10 is the line of this graph.

Help, I know you could find the slope on any two points but the way they graphed it made it super confusing, is this supposed to trick me?

Answers

Answer:

Slope=10.25 (rate of change)

Step-by-step explanation:

(7, 71.75) and (4,41)

(41 - 71.75) / (4 - 7) = 10.25

please help me.........​

Answers

~2.826 for question 6

Answer:

5. 4.886. 2.837.  2.978. 3.64

(assuming you were supposed to round)

1/4 + 5/8 equivalent fractoins

Answers

Answer:

7/8

Step-by-step explanation:

1/4= 2/8

2/8 + 5/8 = 7/8

12 divided by 527 don’t feel like doing this rather do it faster

Answers

Answer:

0.0227703

Step-by-step explanation:

divide and stuff

Please help with this, will mark brainliest!!! :D

Answers

Answer:

the 3rd one

Step-by-step explanation:

the diagonals of a rhombus are 16 cm and 12cm. find its length​

Answers

Answer:

l=10 cm

Step-by-step explanation:

In a rhombus, the diagonals are cut into identical lines at the intersection.

This way, I found the measures of the halves of the diagonals in a right triangle, knowing that the diagonals of the rhombus are perpendicular on each other.

I calculated that AO = AC/2= 8, and that BO=BD/2= 6, and then I applied pytagora's theorem in a quarter of the rhombus, which is the right triangle AOB, to find the length of a side

One teacher wants to give each student 1 4/7 slices of pizza. If the teacher has 22 slices of pizza, then how many students will she be able to handout the pizza to?

Answers

Answer:

Step-by-step explanation

22

How many spaces in which direction do you need to move the decimal to make a whole number?

2.00

Two spaces to the right

One space to the left

No spaces it’s already whole

PLS HELP ASAP

Answers

Answer:

Count the digits to the right of each decimal point three digits in this case. Move the decimal point three spaces in the total, starting at the right and moving left.

2.00 is already a whole number


I WILL MARK BRAINEST!!!! Number 7 :)

Answers

Answer:

The sector for 126 rubies would measure 126 degrees.

Step-by-step explanation:

First, a pie-chart is a circle, and there are 360 degrees in a circle. Because there are 320 total gemstones, 1 gemstone maps to 1.125 degrees. That is, 1.125 degrees per gemstone.

[tex]360\div320=1.125[/tex]

Knowing that, you can calculate the degrees in the pie-chart for any given number of gemstones. Just multiply the gemstones by 1.125.

[tex]112\times1.125=126[/tex]

The sector for 112 rubies would measure 126 degrees.

If you want to be extra sure, you can calculate that for all types of gemstones and add them up:

[tex]32\times1.125=36\\112\times1.125=126\\96\times1.125=108\\64\times1.125=72\\16\times1.125=18\\36+126+108+72+18=360[/tex]

That confirms they all add up to 360 degrees.

How many 1/8th are in 1 2/16

Answers

Answer:

9

Step-by-step explanation:

2/16 can be rewritten into 1/8

so 1 1/8 is 9/8

So there are 9 1/8ths in 1 2/16

Hope this helps!

(This is all copied and pasted. The right answer though! Trust me!)

If there are x times 1/8 gives 1/2 then

x × 1/8 = 1/2

Then x = 4

if we take 4 times 1/8 then

1/8 + 1/8 + 1/8 + 1/8 Or. 4 × 1/8 gives

4/8 = 1/2

Similarly we can get 1/2 by only adding 4 times 1/8

You can get more information about this with the help of this picture.

what are the zeros of the polynomial function ? f(x) = 2x (x-2) (1-x)

Answers

Answer:

The zeros are 0 ,2, and 1

Step-by-step explanation:

f (x) = 2x (x - 2) (1 - x)

set f(x) equal to y

y = 2x (x - 2) (1 - x)

solve when y is 0 because when y is 0 then it is an x-intercept

0 = 2x (x - 2) (1 - x)

separate all of the equations out

0 = 2x

0 = (x - 2)

0 = (1 - x)

solve for x for each equation

0 = 2x

divide both sides by 20/2 = 0 and 2x/2 = x0 = xx = 0

0 = (x - 2)

add 2 to both sides0 + 2 = 2 and (x - 2) + 2 = x2 = xx = 2

0 = (1 - x)

subtract 1 from both sides0 - 1 = -1 and (1 - x) - 1 = -x-1 = - xmultiply both sides by -1-1 · -1 = 1 and -x · -1 = x1 = xx = 1

What Square root equals 11

Answers

3.31662479036 hope this helps!!

y = x -4
y = -x + 6
What is the solution for this system of equations?

(1,5)
(6, – 4)
(-4, 6)
(5, 1)

Answers

Step-by-step explanation:

y = x - 4

y = -x + 6

x - 4 = -x + 6

x + x = 6 + 4

2x = 10

x = 10/2 = 5

y = x - 4

y = 5 - 4

y = 1

Solution = (5,1)

Option → D

Which expression forms an equation with the given expression; 24 - 5 x 2
MULTIPLE CHOICE QUESTION, OPTIONS: (5 x 8 -2), 2(6 +1), (5 +3) x 2), (4 x 9 + 2)
WILL MARK BRAINLIEST FOR BEST AND FAST ANSWER

Answers

Answer:

2(6 + 1).

Step-by-step explanation:

24 - 5 x 2 = 14

2(6 + 1) = 2*7 = 14

Please help me find W Z U

Answers

Answer:

you can do it

Step-by-step explanation:

study to your self to make you smarter DJ meme MFC cjfkckskzkrkcjksskekcijrjvitjvjfjrkdkdkr cjdjf fkn fkf

What is the value of y?
A. Cannot be determined
Β. 36°
C. 120°
D. 60°

Answers

the answer is 60° because all sides need to add up to 180° and 60+60 is 120 and add another 60 it’s 180

In the figure below, segment AB is the hypotenuse of right triangle ABC.

Which of the following could be the coordinates of point C?

Answers A. (2,2) B. (0, 0) C. (2,1) D. (1,7)

Answers

Answer:

C. (2,1)

Step-by-step explanation:

have a great day :)

simplify the expression 6 x x x y

Answers

Answer:

i think its 6 x 3 x 1

Step-by-step explanation:


Ann works as a tutor for $9 an hour and as a waitress for $8 an hour. This month, she worked a combined total of 94 hours at her two jobs.
Lett be the number of hours Ann worked as a tutor this month. Write an expression for the combined total dollar amount she earned this month.

Answers

Answer:

Ann earned $752+x in a month

If you take t as hours he worked as tutor then ,

Money earned will be $752+t

Answer:

  earnings = 752 +t

Step-by-step explanation:

If Ann worked t hours as a tutor, then she worked (94-t) hours as a waitress. Her total wages were ...

  earnings = waitress wages + tutor wages

  earnings = 8(94 -t) + 9(t)

  earnings = 752 +t . . . . . . . simplify

Pleeeeeeeeeeesease helllllllp meee

Answers

Answer:

This is a vertical angle theorem

Step-by-step explanation:

Vertical angles are a pair of opposite angles formed by intersecting lines. In the figure, ∠1 and ∠3 are vertical angles. ... Vertical angles are always congruent . So, in this figure, ∠1≅∠3 and ∠2≅∠4 .

A bicycle is traveling at 16 miles per hour. How many feet will it cover in 40 seconds round to the nearest tenth

Answers

answer: the bike would cover 938.67 in 40 secs.

also, can i have brainly lol

I’ve tried to figure out what 36

Answers

Answer:

close circle on -1 pointing to the right i believe

Granola costs $1.76 per pound. Write and solve an equation to determine the number of pounds p of granola that can be purchased with $7.04.


The equation is:

The value of x is

Answers

Answer:

4 pounds of granola

Step-by-step explanation:

1.76p = 7.04

p = 7.04/1.76 = 4

Which graph below is a function?

Answers

Answer:

the one below the the circle one

There are 28 student desks in Ms. Johnson’s. Each desk measures 26.17 inches long. If you were to line up all the desks end-to-end, how long would all the desks be?

Answers

Answer:

732.76

Step-by-step explanation:

There are 28 desks and each is 26.17. The word "each" signifies multiplication. Formula  - 26.17 x 28  or ; inches x desks

Hope this helps :)

Would someone please explain and answer, I’m having a hard time trying figure it out.

Answers

I need help my self lol XD

Erin needs to make at least a 75 on her semester exam to maintain a B in the class. Which number line correctly represents this situation?
o
75
b.
75
C.
75
d.
75
Ο Α
OB
о с
OD
1
2

Answers

Answer:

C

Step-by-step explanation:

..............$(_(4)5

Answer:

C

Step-by-step explanation:

at least  a 75 means

minimum mark is 75

so it is >= 75

so it is option C

full circle and greater than 75 to the right of number line

9 3/10 - 5 3/4 as a mixed number in simplest form

Answers

Answer:

71/20 or 3 [tex]\frac{11}{20}[/tex]

Step-by-step explanation:

→ 9 [tex]\frac{3}{10}[/tex] = 9 * 10 + 3 / 10

9[tex]\frac{3}{10}[/tex] = 93/10

→ 5 [tex]\frac{3}{4}[/tex] = 5 * 4 + 3 / 4

5 [tex]\frac{3}{4}[/tex] = 23/4

Making the denominators alike;

93 * 4/ 10 * 4 = 372/40

23 * 10 / 4 * 10 = 230/40

93/10 - 23/4 = 372/40 - 230/40

= 142/40

= 71 / 20 (simplifying by dividing both by 2)  OR  3 [tex]\frac{11}{20}[/tex]

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