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
anygoal [31]
3 years ago
13

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalen

t to x from the first equation is substituted into the second equation.
x + 4y = −9
2x + 5y = −6
Mathematics
1 answer:
lyudmila [28]3 years ago
4 0

x=-9-4y

substitute

2(-9-4y)+5y=-6

-18-8y+5y=-6

-18-3y=-6

-3y=-6+18

-3y=12

-3y÷-3= 12÷-3

y=-4

You might be interested in
What is the inverse of y = 3* ?
grin007 [14]
It doesn’t have an inverse because it doesn’t pass the horizontal line test
8 0
2 years ago
Please answer this correctly
4vir4ik [10]

Answer:

20 cups

Step-by-step explanation:

16 ounces = 1 pound

8 ounces = 1 cup

16 ounces = 2 cups

1 pound = 2 cups

10 pounds = 20 cups

6 0
3 years ago
Read 2 more answers
Simplify the expression:<br> (2m + 1)(2) =
Dima020 [189]

4m+2

because 2mx2=4m and 1x2=2 so 4m+2

8 0
3 years ago
Read 2 more answers
if A is the number of degrees and B is the number of grades of any angle ,prove that : B=A+A/9 [FULL PROCESS REQUIRED]​
Gre4nikov [31]
We know
90
∘
=
1
right angle
=
100
g
So
A
∘
=
(
100
90
⋅
A
)
g
Hence by the given condition
B
=
(
100
90
⋅
A
)
=
10
9
A
=
A
+
(
A
9
)
Answer

3 0
2 years ago
Professor Goodheart has two exams, exam 1 and exam 2. The exam 1 weights 40% and the exam 2 weights 60% of the final grades. Put
garri49 [273]

Answer:

Imperfect substitutes

explanation:

The choices above are not perfect substitutes, meaning they can not be perfectly or directly replace the other. Imperfect substitutes are close substitutes but not perfect substitutes. Unlike perfect substitutes, imperfect substitutes satisfies same utility but has different characteristics and therefore not entirely substitutable. For example, while one may want to have the 40 marks too, he'd rather have 60 marks even if the criteria for a 60 mark score was increasingly hard.

8 0
3 years ago
Other questions:
  • A newspaper started an online version of its paper 14 years ago. In a recent presentation to stockholders, the lead marketing ex
    8·1 answer
  • If 2 dice are rolled at the same time, what is the probability of the 2 dice having the same face
    13·1 answer
  • Megan is starting a business selling cookies. She researched other businesses to determine the price that people are willing to
    7·1 answer
  • 54=3q show work and step by step
    14·2 answers
  • I'm doing Quadratic formula and I've simplified it down to the equation at the bottom. What do I do after? Is that my answer bec
    8·1 answer
  • Help me pls pls pls ​
    11·1 answer
  • Convert 0.6 to a fraction to a percent and show a example how​
    8·1 answer
  • Plz answer it as fast as you can​
    12·1 answer
  • 25 POINTS!! (EASY)MORE POINTS!!!!!!! BRAINLIEST PLSSSSSSSSSSSSSSSSSSSHELP. For Brainliest Please help)
    5·1 answer
  • <img src="https://tex.z-dn.net/?f=12%20%5Cfrac%7B3%7D%7B6%7D%20%20%2B%2014%5Cfrac%7B4%7D%7B6%7D%20" id="TexFormula1" title="12 \
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!