Mathematics College

Solve the following system of
equations:
x = 3y + 4
3x - 5y = 8

Answers

Answer 1
You plug in the x = 3y+4 into the 3x part of 3x -5y=8. You distribute the 3 and add like terms to end up with 4y=12. You divide by 4 to get y alone and get -1. That’s your y value. You plug that -1 into the y part of any of the two equations to find x. The simplest one is to plug it in to x=3y+4, and you get -3+4=x, so x= -1
Solve The Following System Ofequations:x = 3y + 43x - 5y = 8

Related Questions

convert the following equation into standard form Y equals negative 7X over 8 +4

Answers

9514 1404 393

Answer:

  7x +8y = 32

Step-by-step explanation:

Clear fractions and add the opposite of the x-term.

  y = -7x/8 +4

  8y = -7x +32 . . . . . multiply by 8

  7x +8y = 32 . . . . . .add 7x

Yeah- I need help please
-3r - 13

r = 2

Answers

Answer:

The answer should be -19

Step-by-step explanation:

-3r - 13 = ?

-3(2) - 13 = ?

-6 - 13 = ?

-19 = ?

John had to different syrups. Syrup A is 2 parts sugar and 8 parts water, and Syrup B is 3 parts syrup and 5 parts water. How much of each should John mix together to get 280 quarts of syrup that is 3 parts sugar and 7 parts water?

Answers

It all started when my mom met my dad...

You'll know the rest

Let the graph of g be a horizontal shrink by a factor of 1/2 and a reflection in the x-axis, followed by a translation 1 unit down of the graph of f(x)=x^2 . Write a rule for g .

plz help very urgent

Answers

Answer:

Fooddddddddingggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggkygygygyygygygghgghhghghghgjkjkjkjkjkjkkjkjkjkjkjkjkjlllololololololololllololooloololololololololooololololololoolololololololoollololollololololololololoollol0olol0olololo0lo0l0ol00ol10000000000000000l00l00l00l000l0l0l0l0l0l00l0l0l0loolololoolol0olllolol0oooololo00l00l0l0lloololol0lololol0oololol0loloolol000llolo

Step-by-step explanation:

15 is 9 more than j I need an equation

Answers

Answer: j = 6

Step-by-step explanation:

the answer is six because the question says 15 is 9 more which is simple subtraction so u do 15-9=6.

Answer:

you have 15 cats but your neighbor had 9 more than you but your mom has J cats. How many cats do you all have together

Step-by-step explanation:

pls help me:(!!!!!!!!!!

Answers

Answer:

A.........................

what the answer to this 7(3 + b)

Answers

Answer:

21 + 7b

Step-by-step explanation:

We have the expression 7(3 + b) and are being asked the answer.

Our expression has a number out of a certain parenthesis, when this occurs, this means that we must distribute the number outside the parenthesis to the numbers inside. Do as following :

7(3 + b)

(7(3) + 7(b))

21 + 7b

(I am unsure on whether you forgot the "= 0" at the end, if you did please tell me in the comment section and I will change my answer.)

Write an expression, using an exponent that is equivalent to 6 x 6 x 6 x 6 x 6.
​

Answers

Answer:

6^4  = 1296

Step-by-step explanation:

6 to the power of 4

Look at the picture I have included. Sry if it is wrong

Anna bought 27 bananas. She used some for a recipe and had 17 left. Select all the
equations that represent this situation.

Answers

Answer:

Step-by-step explanation:

27-x=17

Answer:

um how can we help you when there's no equations...

Step-by-step explanation:

Find the slope between the two points (-6, 3) and (12, 19)

Answers

Answer:

8/9

Step-by-step explanation:

(19-3)/(12-[-6])

16/18

8/9

Answer:

1/3

Step-by-step explanation:

If an 8-sided spinner is labeled with 2As, 2Bs, 2 ones, and 2 twos. What is the sample space for the probability model

Answers

Gg gvgvg v g gg g bg v fb gvg bg bg bg bg bg bg bg bg bg v gvg v fb fb gvg v fb fb gvg v gvg bg v gvg v gvg v fb fb fb gvg bg v fb gvg bg v fb fb fb gvg bg b g bg. Fb gvg. Fb fb fb g a b

The area of a circle is 25.12 square yards. If the dimensions of the circle are tripled, what will be the area of the new figure?

1. 226.08 yd 2
2. 8.37 yd 2
3. 75.36 yd 2
4. 150.72 yd 2

Answers

Answer:

75.36

Step-by-step explanation:

if its 25.12 jus multiply it by 3 since its tripled

How much should you invest at 5% annual interest rate to have the annual interest of $150?

Answers

Answer:

it is 7.5

Step-by-step explanation:

Answer:

It is 7.5

Step-by-step explanation:

Decide which method of data collection you would use to collect data for the study. Specify either observational study, experiment, or simulation. A study where a political pollster wishes to determine if his candidate is leading in the polls for an upcoming election. Question options: simulation observational study experiment

Answers

Answer:

Observational study

Step-by-step explanation:

Observational studies usually requires the comparing the outcome or behavior of two or more subjects involved. In the scenario described above, the need to perform any experiment or simulation to make prediction. Once the polls is in progress, the outcome or result of the polls in polling centre's only need to be observed and noted.

Answer:

D

Step-by-step explanation:

Edge 2021

PLS HELP EASY ALGEBRA LOTS OF POINTSSS AND BRAINLIEST

Answers

Answer:

Boy that's CAAAPPPPP.

Step-by-step explanation:

Answer:

The answer is a = 12 and b = 9.

Step-by-step explanation:

For starters 12 + 9 equals 21 and when you multiply 3/4 by 12 it gets you nine so both those statements are accurate if you choose this answer.

Please help! I need by tomorrow!

Answers

Answer:

-1 = -6

-5 = 2

2 = 4

or it could be

-1,-1

-5, -1

2,2

Step-by-step explanation:

Determine the solution to the system of equations {4x+15y=40
-8x-5y=20}

And write your solution as an ordered pair.



Answers

Step-by-step explanation:

4x+15y= 40-5y= 20

= 4x+15y+5y= 40-20

4x+20y= 20

what is 729 : 4 in long division ​

Answers

Answer: Here's what I got:

Step-by-step explanation:

I don't know if this what you wanted:

Plz guys help me plz

Answers

Answer:

B

Step-by-step explanation:

✔️Rate of change using two points on the line, say (2, 60) and (3, 75);

Rate of change (m) = ∆y\/∆x = (75 - 60) / (3 - 2) = 15/1

Rate of change = 15

This means each class costs $15

✔️Initial value is the y-intercept (b). It represents the initial start-up fee.

To find initial value/y-intercept (b), substitute m = 15 and (x, y) = (2, 60) into y = mx + b.

Thus:

60 = 15(2) + b

60 = 30 + b

60 - 30 = b

30 = b

b = 30

Therefore, initial start-up fee is $30.

Which equation represents a linear function. Pic attached and I will mark brainly

Answers

Answer:

I will answer the equation, however there is no pic attached

Step-by-step explanation:

HELP PLEASE !!
Ivanna is riding on a bike course that is 15 miles long. So far, she has ridden 6 miles of the course. What percentage of the course has Ivanna ridden so far?

Answers

Answer:

50%

Step-by-step explanation:

Cuáles son las partes de un término algebraico

Answers

Answer:

coeficiente, variables, exponentes, y el signo.

Which of the following is NOT type of magnet

a
permanent magnet
b
electromagnet
c
temporary magnet
d
Domain magnet

Answers

Answer:

Is not a type of magnet a domain magnet

Michael draws a scale model of a shed for his engineering class. It is made from a triangular prism on top of a rectangular prism. The volume of the shed is 966 cubic inches. The congruent sides of the triangle are 7.8 inches. A. What is the depth of the shed?

Answers

I’m sorry I just need points I’m really sorry

Four brothers each bough two hot dogs and a bag of chips at the football concession stand if the bag of chips was $1.25 and the total was $18.20 what was the price of one hot dog

Answers

Answer:

$1.65

Step-by-step explanation:

1.25 x 4 = 5.00

18.20 - 5.00 = 13.20

13.20 / 8 = 1.65

they bought 8 hotdogs because there is 4 brothers and each ate 2 so 4 x 2 = 8

Choose Yes or No to tell if the fraction
will make each equation true.
3
+ a
=
23
24
Choose.. v
+=
Choose.. v
13
18
Choose.. v
-=+
Choose.. v
15

Answers

Answer:

yes

yes

no

yes

Step-by-step explanation:

How many 1/6 pieces are there in 3/6
​

Answers

Answer:

there are 3 1/6 pieces

Step-by-step explanation:

since 3 x 1/6=3/6.

another explanation:

(3/6)/(1/6)=(3/6) x (6/1) since you multiply by inverse when dividing fractions. Then, (3/6) x (6/1) = 18/6, which equals 3.

Let the random variable X be equally likely to assume any of the values 1/14, 1/7, or 3/14. Determine the mean and variance of X. The mean is Enter your answer; The mean is 1/7 [Give exact answer in form of fraction.] The variance is Enter your answer; The variance is 0.1190 [Round your answer to four decimal places (e.g. 98.7654).]

Answers

Answer:

1/7 ;

0.0034

Step-by-step explanation:

Given that:

X = 1/14, 1/7, 3/14

n = number of observations = 3

Since, probability of X is equally likely ;

P(X) = Σp(x) = 1 ; p(x) = 1/n = 1/3

The mean, m ;

Σx*p(x) = (1/3 * 1/14) + (1/3 * 1/7) + (1/3 * 3/14)

= 1/42 + 1/21 + 3/42

= (1 + 2 + 3) / 42

= 6 / 42

= 1/7

The variance :

Σx²*p(x) - m²

((1/3) * (1/14)^2) + ((1/3) * (1/7)^2) + ((1/3) * (3/14)^2) - (1/7)^2

= 0.0238095 - 0.0204081

= 0.0034014

= 0.0034

Solve the system of equations by the substitution method.
y = 4x-9
y-x=-3

A.(2, -1)
B.(-4,-7)
C.(-1,2)
D.(-7,-4)

Answers

Answer:

A. (2, -1)

Step-by-step explanation:

(4x - 9) - x = -3

3x - 9 = - 3

3x = 6

x = 2

y = 4(2) - 9

y = 8 -9

y = - 1

(2, -1)

Check

-1 - 2 = -3

Triangle RST has vertices R(-3,2), S(0,-5),and T(4,5).When translated R’ has coordinates (4, 1). Find the coordinates of S’ and T’.

Answers

C bc I just did dis text
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