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
a recent survey shows that 16% of college students have dogs and 38% have an HBO subscription. assuming these two events are ind
Nataly_w [17]

Answer: 0.939\ or\ 93.9\%

Step-by-step explanation:

Given

Survey shows that 16% of college students have dogs and 38% have HBO subscription

Probability that a random person have both is

\Rightarrow P_o=0.16\times 0.38\quad [\text{As both events are independent}]\\\Rightarrow P_o=0.0608

The probability that the random person has neither of the two is

\Rightarrow P=1-P_o\\\Rightarrow P=1-0.0608\\\Rightarrow P=0.939

3 0
2 years ago
Five added to twice Jeff’s age is the same as 3 times his age minus 2. How old is Jeff
prisoha [69]

Answer:

21

Step-by-step explanation:


4 0
2 years ago
Someone please help me!!
Alinara [238K]

Answer:

The first choice

Step-by-step explanation:

Multiplyil by 6 to get 4y - 1 =21

4 0
2 years ago
On the function machine shown below, the function rule is given as a variable expression. When the output is 99, what is the inp
beks73 [17]

Answer: option d.

Step-by-step explanation:

We have the function:

y = f(x) = x^2  - 1

The output is 99 when y = 99, and the input is x.

Then we need to solve:

y = 99 = x^2 - 1

for x.

99 = x^2 - 1

99 + 1  =x^2

100 = x^2

√100 = x

10 = x

The correct option is d, input equals 10.

7 0
2 years ago
What's 482 rounded to the nearest 10
Fantom [35]
The answer to this would be 480. ((:
8 0
3 years ago
Other questions:
  • 66 times 88 divided by 6
    13·2 answers
  • You calculate the number of spots on a pair of two dice that you roll, sides facing up (the total can be called "x"). this is al
    15·1 answer
  • Im studying for my ged can you help with this ?
    5·1 answer
  • What is 30% of what number is 15
    14·2 answers
  • Based on your answers to parts a and d, does the special sales training program seem to have been effective? Explain your answer
    11·1 answer
  • The circumference of a circle is 47.1 and the diameter of the circle is 15. Which best represents
    10·1 answer
  • Y = 5 - 2x<br> inputs are : -1, 1, 3, and 5.<br> I need the outputs :)
    5·1 answer
  • Can someone help me please
    9·1 answer
  • I really need help with this question
    8·1 answer
  • Please please help help me with my work schedule please please thank you so much no links or files and please be correct
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!