Mathematics College

help !! ill give 10 point for answer !!

What is the value of y in the solution of the system?
x + y = 3
y = -6x + 3

Answers

Answer 1

Step-by-step explanation:

x + y = 3 ------------ eqn 1

y = -6x + 3 ---------- eqn 2

Substitute -6x + 3 for y in equation 1

x - 6x + 3 = 3

Evaluating we have,

-5x = 3 - 3

Evaluating further,

x = 0

Substitute 0 for x in equation 1

0 + y =3

Make y subject of formula

y = 3 - 0

y = 3

Hope this helped!

Related Questions

4t + 2u
w;t= 2 and u= 1

Answers

15

Step-by-step explanation:

4t + 2u²- u³

4×2=8

2×1=2²=8

1³=1

8+8-1

16-1=15

5,10,20,40,80 determine if the pattern illustrates geometric sequence or not..​

Answers

Answer:

This is a geometric sequence since there is a common ratio between each term. In this case, multiplying the previous term in the sequence by  2  gives the next term.

.

what does this mean?

Answers

Answer:

That means you finished.

Step-by-step explanation:

I need help Brian listed if u awnser! right now!​

Answers

Hope that helps the distance between his house and school is 3/4 .
if he is 1/3 from school, then the total distance he has to walk is 3 times more than what he has walked

Which number line shows Point A at −4, Point B at 2.5, Point C at −2 and 1 over 2, and point D, which is the opposite of point A?

Answers

Answer:

the answer is D

Step-by-step explanation:

Answer:

Your answer would be D

Step-by-step explanation:

:)

A subway car travels at a rate of 32 meters per second. How far does it travel in 16 seconds?

Answers

multiply 32 x 16 and you get 512 m.p.s

Select all the expressions that are equivalent to y'.

Answers

Answer:

A, B, D

Step-by-step explanation:

A) y squared times y squared you just add the exponents

B) y^6/y^2 write it out as (y)(y)(y)(y)(y)(y)/(y)(y) then u cancel out two "y" from numerator and denominator and is left with y^4

C) is just 0 so its wrong

D) is the same process as B just cancel out 5 "y" from numerator and denominator and is left with y^4

E) is incorrect bc you need to add the exponents and you will get y^5 which is not equal to y^4 so yeah its wrong

Suppose that 8,000 is placed in an account that pays 17% interest compounded each year assume that no withdraws are made from the account

Answers

Step-by-step explanation:

gakamajs8skwzaHzk

bak*ywnJz8s

HELP!!! ASAP MARKING BRAINLIEST!!!!

Answers

Answer:

A. y=1/2x-4

Step-by-step explanation:

maths

pls help having a hard time understanding I just need the answers

Answers

Answer:

B

Step-by-step explanation:

Basically, you can rule out all of the other answers by the following criteria:

A is wrong because any y= equation without an x is just a straight horizontal line

C is wrong because any x= equation is just a vertical line

D is wrong because both lines shown are positive lines, and both equations in  answer D are negative

Therefore by process of elimination, the only answer that makes sense is B

Help thank you to who ever does I will mark brainliest.

Answers

Answer:

V = 200.96 units ^3

Step-by-step explanation:

The volume of a cone is given by

V = 1/3 pi r^2 h

The radius is  4 and the height is 12

V = 1/3 ( 3.14 ) ( 4)^2 * 12

V = 200.96 units ^3

ANSWER:  200.96 units

In quadrants 1 and 3 the x-coordinate of a point is positive?

Answers

no because one is negative and the other is positive so no it didn't

plz help! will give brainliest! really easy!

Answers

Answer:

C

Step-by-step explanation:

I explained it in the comments of the other one

HELLPPPPPPPPP PLEAAASSSEEEEE

Answers

Option number 3 should be the correct answer

Samantha invested $670 in an account paying an interest rate of 5.5% compounded daily. Assuming no deposits or withdrawals are made, how long would it take, to the nearest year, for the value of the account to reach $1,740?

Answers

Answer:

  17 years

Step-by-step explanation:

The formula for the value of an account earning compound interest can be used to find the number of years. That formula is ...

  A = P(1 +r/n)^(nt)

where P is the principal invested at annual rate r compounded n times per year for t years.

__

Solving for t, we find ...

  A/P = (1 +r/n)^(nt) . . . . . . divide by P

  log(A/P) = nt·log(1 +r/n) . . . . take logarithms

  t = log(A/P)/(n·log(1 +r/n)) . . . . . divide by the coefficient of t

For the given values, the time required is ...

  t = log(1740/670)/(365·log(1 +0.055/365)) ≈ 17.353

It would take about 17 years for the account value to reach $1740.

_____

Additional comment

The time-value-of-money (TVM) apps of your calculator or spreadsheet can be used to find the time period of interest. Here, setting P/Y = 1 gives N in years.

What is the distance between the points (22 , 14) and (7 , 14) in the coordinate plane?

Answers

Step-by-step explanation:

Distance between the points = sqrt[(22-7)² + (14-14)²] = 15.

Answer:

it is 15 something sorrry if i am wrong

Step-by-step explanation:

Elizabeth ate lunch and wanted to leave her waitress a 15% TIP. Her meal cost $8.95. How much money should Elizabeth leave total?

Answers

Answer:

$10.2925, Rounded up: 10.30

Step-by-step explanation:

First, you find what 15% is in a decimal. so you do 15 x 100 to get 0.15

Then you multiply that by 8.95 to get 1.3425

Finally, you add up the numbers and get 10.30 as a rounded answer :D

Rick has $20. He spent $10 on food, $6 on a movie ticket, and saved the rest.

( need to answer both pls )

A. How much money did he save.
B. What fraction of the total amount did he save.

Answers

Answer:

A. $4

4/20 or 1/5

Step-by-step explanation:

what is a preimage and image of triangle in a translation

Answers

Answer:

translation to what language?

Step-by-step explanation:

9514 1404 393

Explanation:

The preimage is the original triangle, the figure before any transformation is done to it.

The image is the result of applying a transformation to the preimage.

__

When the transformation is translation, the image is congruent to the preimage, but is located in a different place. It is not rotated or reflected if the only transform is translation.

what's the area of the quadillateral​

Answers

Answer:

The area of the quadillateral is 360 degree.

Step-by-step explanation:

Hope this helped!

Have an amazing day!

Explain how to use the unit-factor method to convert 120 pounds to kilograms.

Answers

Answer:

Step-by-step explanation:

lets remember that 1kg=2.2 lb

if

2.2 lbs................................1 kg

120lbs...................................? kg

120/2.2=54.54 kg

A textbook store sold a combined total of 392 physics and psychology textbooks in a week. The number of physics textbooks sold was three times the number of psychology textbooks sold. How many textbooks of each type were sold?

Answers

Answer:

Psychology textbooks = 98 and physics textbooks = 294

Step-by-step explanation:

Let there are x psychology textbooks sold.

No of physics textbooks sold = 3x

ATQ,

A textbook store sold a combined total of 392 physics and psychology textbooks in a week.

x + 3x = 392

4x = 392

x = 98

It means there are 98 psychology textbooks sold and 3x = 3(98) = 294 physics textbooks sold.

Cate wants to buy calzones and sodas for her friends. She finds that when she buys 2 calzones and 3 sodas, she pays $13. When she buys 3 calzones and 2 sodas, she pays 17. The prices for a calzone, LaTeX: cc, and for a soda, LaTeX: ss, can be found using a system of equations. Enter with NO dollar signs

Answers

Answer:

Step-by-step explanation:

23

multiply 4-6i and -4+2i

Answers

Answer:

-4 + 32i

Step-by-step explanation:

use the distributive property to multiply

remember: i^2 = 1

(4 - 6i)(-4 + 2i)

-16 + 8i + 24i - 12i^2

-16 + 32i - 12(- 1)

-16 + 32i +12

-4 + 32i

Answer:

4 - (6 * i)) * ((-4) + (2 * i)) =

-4 + 32 i

Step-by-step explanation:

What is 3×7×7×7×7 using index notation

Answers

Answer: 3 x 7^4

Because there's one 3 & four 7's .

Step-by-step explanation:

write a polynomial equation of degree 4 that has the roots of -1 repeated three times and 4.

Answers

Answer:

f (x) = (x+1) 3These three is elevated with the parenthesis ( x- 4)

Step-by-step explanation:

Solve each equation for 0< theta < 2pi


3-2sin theta=5

Answers

Step-by-step explanation:

3 - 2sinθ = 5

2sinθ = -2

sinθ = -1

Therefore θ = 3π/4.

Which of the following is a proper fraction?

a. 3

4 b. 4

3

c. 4

13 d. 5​

Answers

Complete question is;

Which of the following is a proper fraction?

a. 3/4

b. 4/3

c. 4¾

d. 3¼

Answer:

a. ¾

Step-by-step explanation:

Proper fraction is one in which the numerator is less than the denominator while improper fraction is one whereby the numerator is greater than the denominator.

From this definition, the one that is proper fraction is only ¾.

Answer:

jllfdlkdjklfsdkldsjlkdsj

Step-by-step explanation:

this is payback

what is the product of 2 1/8 and 4 1/3 ? who ever answer correct will be marked brainlest​

Answers

Answer:

9 5/24

Step-by-step explanation:

Laura bought some books. She spent a total of $71 after a discount of $5 off of her total purchase. Each book cost $4. How many books did she buy?


Answers

Answer:

4b-5=71

19 books

Step-by-step explanation:

b represents books, and 4 is the cost, so the cost (4•19) minus the discount (-5) equals 71 and solves the equation

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