1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sleet_krkn [62]
3 years ago
11

Y=–3x + 6y=9 What is the solution to the system of equations? (–21, 9) (9, –21) (–1, 9) (9, –1)

Mathematics
2 answers:
weqwewe [10]3 years ago
7 0

ANSWER


The solution is (-1,9)

EXPLANATION

We want to solve the simultaneous equations


y=-3x+6---(1)


and


y=9--(2).


We substitute equation (2) in to equation (1), to obtain


9=-3x+6


This has now become a linear equation in a single variable x.


We solve for x  by grouping like terms.


9-6=-3x


3=-3x


We divide through by negative 3 to get;


-1=x.


Hence, the solution is (-1,9)





Vlad [161]3 years ago
5 0

Answer:

c

Step-by-step explanation:

You might be interested in
Which expression is the factored form of x2 – 7x + 10? (x + 3)(x + 4) (x – 3)(x – 4) (x – 2)(x – 5) (x + 2)(x + 5)
vivado [14]
(x-2)(x-5) because -5x-2=10 and -5+-2=-7
6 0
3 years ago
Read 2 more answers
Https://brainly.com/question/20878368
kodGreya [7K]

Answer:

Step-by-step explanation:

4 0
2 years ago
Find the area of following rhombuses. Round your answers to the nearest tenth if<br> necessary.
polet [3.4K]

Answer:

Area =55.4ft^2

Step-by-step explanation:

Given

The attached rhombus

Required

The area

First, calculate the length of half the vertical diagonal (x).

Length x is represented as the adjacent to 60 degrees

So, we have:

\tan(60) = \frac{4\sqrt 3}{x}

Solve for x

x = \frac{4\sqrt 3}{\tan(60)}

\tan(60) = \sqrt 3

So:

x = \frac{4\sqrt 3}{\sqrt 3}

x = 4

At this point, we have established that the rhombus is made up 4 triangles of the following dimensions

Base = 4\sqrt 3

Height = 4

So, the area of the rhombus is 4 times the area of 1 triangle

Area = 4 * \frac{1}{2} * Base * Height

Area = 4 * \frac{1}{2} * 4\sqrt 3 * 4

Area =2 * 4\sqrt 3 * 4

Area =55.4ft^2

7 0
3 years ago
-5x=3x-24 help me with this problem
adoni [48]

Answer:

x = -3

Step-by-step explanation:

Take the 3x away from the right side.

-5x-3x=-8x

-8x = -24

Divide both sides by 8.

-8x/8 = x

-24/8 = -3

x = -3

7 0
3 years ago
2) A product originally costs $125. If the product goes on sale for 20% off, and then goes on sale for an additional 30% off, wh
alukav5142 [94]
To do these, always convert the percents to decimals, so you can subtract it from 1. Remember, 1 is the whole. When you subtract the part that's taken off, you are left with what you have to pay. If you have 20% off of $100, then you are paying for 80% of $100. **of means to multiply** so you would multiply: 0.8X100, which would be $80.

First, multiply 125x0.8

Multiply that answer by 0.7

You should get B. $70

3) multiple 22.90x0.93

You should get D
7 0
3 years ago
Read 2 more answers
Other questions:
  • *Urgent* I need help answering this question. Someone please help me, I keep seeing someone type on my questions but they never
    15·2 answers
  • A tall man, who is sitting up straight in his seat, is completely blocking John's view at the cinema. John is 10m from the 4m hi
    11·1 answer
  • You roll two standard number cubes. What is the probability that the sum is odd, given than one
    7·1 answer
  • Easy but need help :(((
    14·2 answers
  • The length of a rectangle is 1 cm less than the width. The area of the rectangle is 12 cm². determine the dimensions of the rect
    8·1 answer
  • Joe needs to push his car 20 feet up a hill. If
    13·1 answer
  • What is the solution of the following systems of equations? y = 1/2x <br> y = -x -3
    14·1 answer
  • What’s the solution for 2x =8
    12·2 answers
  • What value<br> cannot be<br> included in<br> The domain<br> 3x+1<br> 2x+10
    5·1 answer
  • Roy used 1/4 of his money on 3 pens and 6 notebooks. The cost of each pen is 3 times the cost of each notebook. He bought some m
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!