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
Alex777 [14]
2 years ago
9

Solve the system ... y=3x-8 and y=-9x+4

Mathematics
1 answer:
natita [175]2 years ago
7 0
1] y - 3x = -8
[2] y + 9x = 4

-3x + y = -8 9x + y = 4

Solve equation [2] for the variable y


[2] y = -9x + 4

// Plug this in for variable y in equation [1]

[1] (-9x+4) - 3x = -8
[1] - 12x = -12
// Solve equation [1] for the variable x


[1] 12x = 12

[1] x = 1
// By now we know this much :

y = -9x+4
x = 1
// Use the x value to solve for y

y = -9(1)+4 = -5

{y,x} = {-5,1}
You might be interested in
(a) Martina owns 64 shares of a certain stock. Yesterday the value of each share went up by 8
Mekhanik [1.2K]

Answer:

a. 64 x ($)8 = ($)512

b. 45 (members) / 9(weeks) = 5 (members per week)

8 0
2 years ago
Tom wants to order tickets online so that he and three of his friends can go together to a water park. The cost of the tickets i
laiz [17]
16n + 2.50 = $18.50n

Will this do?
4 0
3 years ago
Let’s assume that human body temperatures are normally distributed with a mean of 98.20° F and a standard deviation of 0.62° F.
uysha [10]

Answer: It is such a small percentage of the population that would be considered to have fever at that level.

So, it is not appropriate stringent standard.

Step-by-step explanation:

Since we have given that

Mean = 98.20°F

Standard deviation = 0.62°F

If  Bellevue Hospital in New York City uses 100.6°F as the lowest temperature considered to be a fever.

So, \bar{X}=100.6^\circ F

So, using the normal distribution, we first find the value of z.

z=\dfrac{\bar{x}-\mu}{\sigma}\\\\x=\dfrac{100.6-98.2}{0.62}\\\\z=3.87

Since z = 3.87

So, p = 0.0001 =0.1%

So,It is such a small percentage of the population that would be considered to have fever at that level.

So, it is not appropriate stringent standard.

4 0
3 years ago
In ΔXYZ, ∠Y=90° and ∠X=24°. ∠ZWY=81° and XW=7.1. Find the length of WY to the nearest 10th.
Brums [2.3K]

Answer:

0.5

Step-by-step explanation:

delta math

4 0
3 years ago
What is 7/p=8/9? Solve for p
irina [24]

Answer:

Exact form, p = 63/8

decimal form, p = 7.875

Mixed number form, p = 7 7/8

Step-by-step explanation:

Solve for p by cross multiplying

7 0
2 years ago
Read 2 more answers
Other questions:
  • Suppose Monica Walks 1 kilometer every 15 minutes. How many meters further can she walk in 1 hour at this new rate? EXPLAIN how
    10·1 answer
  • Use the Remainder Theorem to find the remainder when f(x) = x^4 + 4x^3 - x^2 - 16x -12 is divided by x - 4.
    9·1 answer
  • FIRST TO ANSWER GETS BRAINLIEST
    7·2 answers
  • Which of the following expressions would appear farthest to the right on a number line when solved?
    8·2 answers
  • In a toothpaste survey,5 of the first 15 people surveyed preferred the same toothpaste.If 30 people will be surveyed altogether,
    7·1 answer
  • How do u write 2/400=2/400÷4/4=0.5/100= as a percent
    7·1 answer
  • 19. What is the lateral area of the cone to the nearest whole number? The figure is not drawn to scale.
    5·1 answer
  • -25-6= -25 + -6 = -31
    5·1 answer
  • 5/6 x 3/4 as an array is?
    15·1 answer
  • A pair of equations is shown below.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!