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
gogolik [260]
3 years ago
7

How do I solve system of equations substitution method??!!?!???

Mathematics
1 answer:
adelina 88 [10]3 years ago
8 0
For example:

x+2y=7
6x+7y=2
__________

x=7-2y *
6*(7-2y)+7y=2 **

__________

x=7-2y
42-12y+7y=2
__________

x=7-2y
-5y=-40
__________

x=7-2y
y=8

x=-9
You might be interested in
X3+2x2+7 by x+3 which synthetic division expression would give the correct result
IRISSAK [1]

Answer:

x^2-x+3 (r -2)

Step-by-step explanation:

x^3+2x^2+7 / x+3

-3 | 1 2 0 7

       -3 3 -9

_________

     1 -1 3 -2

This means x^2-x+3 with a remainder of -2

7 0
3 years ago
Find the equation of the line through (5,7) that is perpendicular to y=2/3x-2
Rainbow [258]

Answer:

y=-2/3x+10.3333333333333334

Step-by-step explanation:

to make it perpendicular 2/3 becomes -2/3

4 0
3 years ago
Read 2 more answers
The surface area of a right square pyramid is given by A=b2+2bh where b is the length of a side of the base and h is the slant h
gizmo_the_mogwai [7]

Answer:

h = \dfrac{A - 9}{6}

Step-by-step explanation:

A=b^2+2bh

b = 3

A = 3^2 + 2(3)h

A = 9 + 6h

6h = A - 9

h = \dfrac{A - 9}{6}

4 0
3 years ago
Wendy throws a dart at this square-shaped target:
Ostrovityanka [42]

Answer:

Hello! I hope I am correct! :)

Step-by-step explanation:

Let’s first calculate the black circle & the white space.

Since there is more white space than the black circle, we already know that the white space will have more probability.

These are the steps you need to do, in order to so love this problem:

1. Find the area of both, the white space and the black circle.

2. Divide both of them by the area of the square.

3. Do all these steps to find the probability/hitting.

Part A:

Black circle: ( π *1^2) / ( π 5^2) = 1/25 = .04 or 3.14% chance.

So we can tell it’s close to zero.

Part B: 1 - .04 = 0.96 or 97%

This is close to one.

(Remember I am not saying the exact, it’s a estimate)

Brainliest would be appreciated!

Hope this helps! :)

By; BrainlyAnime

8 0
3 years ago
Instructions are in the picture
Phantasy [73]

Answer:

123123 3213123 12312 dasdsd aw dasd sda asdasd

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • The perimeter of the school crossing sign is 102 inches. What is the length of each side?
    8·1 answer
  • Define the term probability
    10·2 answers
  • Which is a perfect square?
    9·2 answers
  • Given the area of a triangle is 40 cm2, if its altitude is 8 cm, its base is 15 cm.
    7·1 answer
  • -6k + 7k simplified the expression
    13·2 answers
  • Amber got a raise. her hourly wage increased from $8 to $10 an hour. How much did amber's hourly wage increase. Show your work.
    9·2 answers
  • DE is a Mid-segment of triangle ABC. How long is DE?
    11·1 answer
  • Give the equation pls
    8·1 answer
  • WILL GIVE BRAINLEST PLS HELP ASAP LOOK AT IMAGE AND PLS HELP​
    14·2 answers
  • A rectangular piece of paper with length 30cm and width 12cm has two semicircles cut out of it, as shown below.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!