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
Hunter-Best [27]
3 years ago
6

How do you do this solved by substitution?

Mathematics
1 answer:
ladessa [460]3 years ago
3 0
X=-12-3y
2(-12-3y) - y = -3
-24 - 6y - y = -3
-7y = 21
y = -3

x = -12 - 3(-3)
x = -3
You might be interested in
PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEE HELP ME. IF I PASS THIS I GET TO GO TO DISNEY WORLD.
Vera_Pavlovna [14]

Answer:

I think it would be C

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the value of 5 in 756
BartSMP [9]
7: has a value of 7 hundreds (or 700)
5: has a value of 5 tens (or 50)
6: has a value of 6 ones (or 6)

5 has a value of 50 or five tens

I believe you would draw this by drawing something that looks like place value blocks. I have attached an example of that. In the ones column, you will have 6 single blocks

4 0
3 years ago
If a triangle is an isosceles triangle, then it has two sides of equal length. If a triangle has two sides of equal length, then
Ann [662]
It is valid through syllogism

3 0
3 years ago
Read 2 more answers
A company wants to establish that the mean life of its batteries, when used in a wireless mouse, is over 183 days. The data will
enyata [817]

Answer:

a) Null and alternative hypotheses are:

H_{0}: mu=183 days

H_{a}: mu>183 days

b) If the true mean is 190 days, Type II error can be made.

Step-by-step explanation:

Let mu be the mean life of the batteries of the company when it is used in a wireless mouse

Null and alternative hypotheses are:

H_{0}: mu=183 days

H_{a}: mu>183 days

Type II error happens if we fail to reject the null hypothesis, when actually the alternative hypothesis is true.

That is if we conclude that mean life of the batteries of the company when it is used in a wireless mouse is at most 183 days, but actually mean life is 190 hours, we make a Type II error.

4 0
4 years ago
Find the equation of a line, in slope-intercept fotm of a line that passes through the point (9,2) and is perpendicular to the l
cricket20 [7]

Considering the definition of perpendicular line, the equation of of perpendicular line is y= -\frac{1}{2}x + \frac{13}{2}.

<h3>Linear equation</h3>

A linear equation o line can be expressed in the form y = mx + b.

where

x and y are coordinates of a point.

m is the slope.

b is the ordinate to the origin and represents the coordinate of the point where the line crosses the y axis.

<h3>Perpendicular line</h3>

Perpendicular lines are lines that intersect at right angles or 90° angles. If you multiply the slopes of two perpendicular lines, you get –1.

<h3>Equation of perpendicular line in this case</h3>

In this case, the line is 2x-y=8. Expressed in the form y = mx + b, you get:

-y=8 - 2x

y= (-2x +8)÷ (-1)

y= 2x -8

If you multiply the slopes of two perpendicular lines, you get –1. In this case, the line has a slope of 2. So:

2× slope perpendicular line= -1

slope perpendicular line= (-1)÷ (2)

<u><em>slope perpendicular line= -</em></u>\frac{1}{2}

So, the perpendicular line has a form of: y= -\frac{1}{2}x + b

The line passes through the point (9, 2). Replacing in the expression for perpendicular line:

2= (-\frac{1}{2})× 9 + b

2=  -\frac{9}{2} + b

2+ \frac{9}{2}= b

<u><em /></u>\frac{13}{2}<u><em>= b</em></u>

Finally, the equation of of perpendicular line is y= -\frac{1}{2}x + \frac{13}{2}.

Learn more about perpendicular line:

brainly.com/question/7197064

brainly.com/question/11470863

brainly.com/question/7280013

#SPJ1

6 0
2 years ago
Other questions:
  • Ashok arrives at Starbucks at a random time in between 9:00 am and 9:20 am and Melina arrives at Starbucks at a random time in b
    6·1 answer
  • Help please! this is my third time posting this!! T.T
    13·1 answer
  • Six times the sum of a number and twelve is forty
    6·1 answer
  • Below is a two-column proof incorrectly proving that the three angles of ΔPQR add up to 180°:
    12·1 answer
  • What is 8 6\8-4 4\10)what is 6 6\10- 4 4\10​
    9·1 answer
  • Some friends spent the afternoon collecting aluminum cans for
    9·2 answers
  • Find the probability that a randomly selected point within the circle falls in the red shaded area (square). Round to the neares
    5·1 answer
  • Will mark brainlist for correct answer​
    12·1 answer
  • I need help now use quadratic formula nowwwwwww please
    12·1 answer
  • Original Price: $90 Sale Price: $58.50<br> Can you also show the math
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!