Mathematics College

What is the solution of the following systems of equations? y = 1/2x
y = -x -3

Answers

Answer 1

Answer:

x = -2,  y = -1

Step-by-step explanation:

System of Equations

Solve the system:

y = 1/2x

y = -x - 3

Multiplying the first equation by 2:

2y = x

Substituting x in the second equation:

y = -2y - 3

Adding 2y:

3y = -3

y = -3/3

y = -1

And x = 2*(-1) = -2

Solution: x = -2,  y = -1

Related Questions

using 250mililitres measuring cylinder, how many 250mililitres will give you 4litres​

Answers

Answer:

sixteen 250 millilitres

Step-by-step explanation:

250 millimetres = 1/4 litre

4 litres = 16 one-fourth litres

PLZ MARK AS BRAINLIEST

(220+127)h=30+9 is what? pls help ik but rlly HELP....

Answers

Answer:

347

Step-by-step explanation:

I don't know how you want me to answer this, so I just answered with the exact value.

Answer:

the answer would be h= 39/347 (a fraction)


Saturday Sunday
Minutes
32
Miles
3
4
I

Answers

it’s droopy dog B homie it’s B

How to find the scale factor of two triangles using the sides?

Answers

Answer:

You can find the scale factor of two triangles by using the ratio of two corresponding sides, so if you begin with smaller figure, your scale factor will be less than one and if you begin with larger figure, your scale factor will be bigger than one.

Step-by-step explanation:

Set up ratios of the corresponding sides of the triangles. For example, the ratio of small to big triangle sides in two triangles is 5/10, 10/20 and 20/40. Divide both numbers in one of the ratios by their highest common factor. This will give you the scale factor of the bigger triangle to the smaller triangle.
I think hope it helps’

Help Me A.S.A.P

Alice bought a 28 pack of donuts to share with her friends at school. The donuts cost $10.00 all together. what is the unit rate for the donuts

Answers

38 is the answer I’d ur adding all of them together. :))

14 is what percent of 140

Answers

Answer:

10

Step-by-step explanation:

Answer:

10%

Step-by-step explanation:

140  100

14     x

-Cross-multiply

[tex]\frac{100*14}{140}[/tex]=10

What is y=-6x-8 in standard form

Answers

Answer:

Standard Form y=-6x-38. y=−6x−38 y = - 6 x - 38. The standard form of a linear equation is Ax+By=C A x + B y = C .

Step-by-step explanation:

Answer:

Simplifying
Y = -6x + -8

Reorder the terms:
Y = -8 + -6x

Solving
Y = -8 + -6x

Solving for variable 'Y'.

Move all terms containing Y to the left, all other terms to the right.

Simplifying
Y = -8 + -6x

5TH GRADE LEVEL QUESTION. PLEASE LOOK AT PHOTO AND ANSWER GIVING BRAINLIEST

Answers

Answer:

C.

Step-by-step explanation:

The equation that can be used to determine r is r = 3/.5 (1/2)

Hope this helps :)

Please help me answer this

Explain you’re answer

Will give braisnlt

Answers

use division to solve your answer

f(x) = -2² – 3x + 3
Find f (7)

Answers

Answer:

[tex]f(7) = -22 \\[/tex]  

Step-by-step explanation:

Whenever there is a question asking to find something like f(7), it is asking you to substitute the number within those parentheses for the matching variable within the function.

To find f(7), first substitute 7 for all the x's within the function. Then, following PEMDAS, simplify like how you normally would. Multiply out [tex]-2^2[/tex], then multiply 3 by 7, then add all the numbers together.

[tex]\\f(7) = -2^2-3(7)+3\\f(7) = -4 - 21 + 3\\f(7) = -25 + 3\\f(7) = -22[/tex]

Thus, [tex]f(7) = -22 \\[/tex].

What does "solution" mean?
What does it mean for a point to be a solution to a linear
equation?
For example, if I say, " (2,5) is a solution to the
equation y = 2x + 3," how could you check my claim?

Answers

Answer:

A solution to a linear equation means that the ordered pair is a point that lies on that line.

If someone were to say (2,5) is a solution to the equation y= 2x+3, you could check them by plugging in 2 where the variable "x" and seeing if y =5.

In this case,

y= 2(2)+3

y=7

(2,5) is not a solution.

PLEASE HELPPP You can multiply -2.2 by 6.2 to find the total variation in water level. What decimal represents the total variation in water level that Ericka observed?

Answers

Answer:

the answer is -13.64

Step-by-step explanation:

that's the answer

Choose the correct problem for the fraction
7/8


A.7divide10
B.7multiply8
C.8divide7
D.7divide8

Answers

Answer:

d

Step-by-step explanation:

dont choose mine just yet but i think it is correct

The correct problem for the fraction 7/8 is 7 divided by 8.

Option C is the correct answer.

What is a fraction?

A fraction is written in the form of a numerator and a denominator where the denominator is greater that the numerator.

Example: 1/2, 1/3 is a fraction.

We have,

7/8

This is 7 divided by 8.

Thus,

7 divided by 8 is a fraction of 7/8.

Learn more about fractions here:

https://brainly.com/question/24370499

#SPJ2

In the equation z + 4 = 44, what is the next step in the equation solving sequence?


Move the constant to the right side of the equation.


Isolate the variable through inverse operations.


Combine like terms.


Identify and move the coefficient or variable.

Answers

Answer:

Isolate the variable through inverse operations.

Step-by-step explanation:

Subtract 4 from  both sides:

z + 4 - 4 = 44 - 4

z = 40

Missy is a pitcher on her softball team. She says that she can feel the smallest difference in
softball weights. The lightest softball weighs 177 grams. Her lucky softball weighs 196 grams.
How much heavier is Missy's lucky softball than the lightest softball?

Answers

Answer:

19 Grams

Step-by-step explanation:

196-177

I need help with this question!

Answers

9514 1404 393

Answer:

x = 87x = 5611x -5 = 83

Step-by-step explanation:

Consecutive interior angles have a sum of 180°, so ...

  (41 +7x) +(11x -5) = 180

  18x +36 = 180 . . . . . . . . . simplify

  x + 2 = 10  . . . . . . . . . . . . divide by 18

  x = 8

The angle 7x is then ...

  7x = 7(8) = 56 . . . . degrees

The angle 11x -5 is ...

  11x -5 = 11(8) -5 = 83 . . . . degrees

__

Check

41 + 56 + 83 = 97 +83 = 180 . . . . as required

Answer:

According to the above problem

[tex](7x) + (11x - 5) + 41 = 180 \\ 18x = 180 + 5 - 41 \\ 18x = 144 \\ \boxed{x = 8}[/tex]

Therefore, the angles are 41°, 56° and 83°.

Can somebody plz help me plz!!! ASAP
20 points

Answers

Answer:

4) A

Step-by-step explanation:

Make 500$ !!!!
9th grade homework comment if your down

Answers

Answer:

What? im totally confused

Step-by-step explanation:

Answer:

Im comfusesd to

Step-by-step explanation:

The triangles are similar.


What is the value of x?



Enter your answer in the box.

x =

Answers

Answer:

x=16

Step-by-step explanation:

Process in photo.......

2. The cost of a home entertainment center is $4700. We can finance this by paying $300 down and
$388.67 per month for 12 months.
a. Determine the amount financed.
b. Determine the total installment price.
c. Determine the finance charge.

Answers

Answer:

well. 372.

You don't have to buy a house. It doesn't really matter tho

You can live in an apartment or even hotel/motel. Enjoy

Step-by-step explanation:

Five times the sum of a number and 27 is greater than or equal to six times the sum of that number and 26. What is
the solution set of this problem?
O (-0, -21)
O (+0,-21]
O [-21.00)
O (21,+0)

Answers

the answer is 0, -21

A ribbon is 6 1/2 feet long. You cut off a 1 3/4 foot peice and a 2 2/3 foot peice. How many if the original ribbon is left?​

Answers

Answer:

2 feet and one inch left of the original ribbon

Nngdyjjgdeujjjhhh yffggyhvd of gfuff

Answers

Answer:

8x3 to the 6th degree minus 4th5 odd one under.

Step-by-step explanation:

what is the value of the ratio 5 to 4

Answers

Answer:

5/9 or 4/9

Step-by-step explanation:

Answer:

1.25

Step-by-step explanation:

the raio 5 to 4

is 5 over 4

which means 5 divided by 4

The shop stocks 3 times as many Coca-Colas as Coke Zeros. There are a total of 36 on the shelf. How many of each type of drink are there?

Please explain thank youu!

Answers

Answer

There are 12 coke zeros and 24 coca-colas

Step-by-step explanation:

If there are 36 drinks in total and the shop stocks 3 times as many cokes than coke zeros you would have to divide 36 by 3 and that gets you 12 coke zeros and to check your work you can do 12 times 3 which would be 3 times the cokes which makes a total of 36 and 36 - 12 = 24 cokes.

Sorry if I don't have that much points and you don't have to answer all the questions just at least help me with 2.

Answers

Answer:

okay so times 42 by 7 then whatever u get times it by 7 so 7x42=294 so after times 294 x7 and keep x by 7

Step-by-step explanation:

(a) Find a 90% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for their watermelon crop (in dollars). What is the margin of error (in dollars)

Answers

Answer:

The margin of error (E)  [tex]=0.49[/tex]

Step-by-step explanation:

Given,

 mean [tex]\bar{x}=6.88[/tex]

 standard deviation [tex]\sigma=1.90[/tex]

 sample size [tex]n=41[/tex]

[tex]90\% \quad \text{confidence interval}[/tex]

Critical value [tex]=\frac{z_\alpha}{2}\quad \quad\quad[\because\;\alpha=1-\text{confidence interval}][/tex]  

                                                [tex]=1-0.90[/tex]

                                        [tex]\Rightarrow \alpha=0.1[/tex]

Critical value [tex]=\frac{z_{0.1}}{2}[/tex]

                      [tex]=z_{0.05}[/tex]

                      [tex]=1.645[/tex]

The margin of error (E)  [tex]=\frac{z_\alpha}{2} \times\frac{\sigma}{\sqrt{n} }[/tex]

                                       [tex]=1.645\times\frac{1.90}{\sqrt{41} }[/tex]

                                       [tex]=0.49[/tex]

Hence, The margin of error (E) [tex]=0.49[/tex]

Complete question is attached in below.

                     

I need help please I will mark you brainliest

Answers

Answer:

A

Step-by-step explanation:

10^-3 will make it negative and then 10^3 because it is less then 10^7

Answer:

A

Step-by-step explanation:

Because all three of these are 7.68x10^a power the determining factor in which one is the greatest is based on which one has the largest exponent -3<3<7 so this is the order from least to greatest.

1) The perimeter of a square is 16 inches. What is the length of each side?
4 inches
8 inches
64 inches
32 inches
Done >

Answers

4 inches because a square has 4 sides 16 divided by 4 is 4
4

16 divided by 4 = 4

Select the correct choice below and fill in the answer​ box(es) to complete your choice.
​(Type a whole​ number.)
A. 312÷75=?
B. 312÷75=? R ?
IN the answer B the reason why i put an R there is because they are also asking for the remainder and also plz take ur time on this and don't rush bc i'm in no rush at all and PLZ DONT JUST BE HERE FOR POINTS.! And also when ur done don't be scared to ask me if i could help u on ur questions to bc i would LOVE TO help anyone. Bc that's what this app is for! Have an wonderful day loves! <3

Answers

Answer:

A.4.16

B. 4 R 12

Step-by-step explanation:

I'm justing going around answering my friends question Imao

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