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
natita [175]
3 years ago
11

Solve thePiSimultaneous equationusing elimination3x+2y=22x+2y =-7​

Mathematics
1 answer:
torisob [31]3 years ago
5 0

Answer:

x= 9

y=-12.5

Step-by-step explanation:

3x+2y = 2×2

2x+2y =-7×3

6x+4y =4

- 6×+6y =-21

-2y =25

y=-12,5

2x+2(-12,5)= -7

2x+-25= -7

2x= -7+25

2x/2=18/2

x= 9

You might be interested in
Three more than the quotient of a number and 8 is equal to 9
garri49 [273]

Answer:

The number is 48.

Step-by-step explanation:

x/8+3=9

x/8=9-3

x/8=6

x=6*8

x=48

6 0
3 years ago
Please help<br>explain one and I'll figure out the rest thanks
Nookie1986 [14]
The page gives you the information that 1 kg is equal to 1000 grams.
This means that you just need to multiply each kg by 1000.

e.g. 6.8 * 1000 = 6800

Hope this helps!
6 0
3 years ago
Read 2 more answers
The average weight of full-grown beef cows is 1,470 pounds with a standard deviation of 230 pounds. if the weights are normally
creativ13 [48]

Answer: The percentile is 89

Step-by-step explanation:

This question can be solved using concept for t tables

In a normal distribution the curve. \mu= 1470 ,  \sigma = 230, x=1750

The relationship between z score, mean and standard deviation is given by

x = \mu+z\sigma

So the z value according to this is given by the formula

1750=1470+z(230)\\ z=\frac{280}{230} \\\\z = 1.217

From the z table we can infer that p value for z=+1.217 is 88.82

So 1750 is 89th percentile

To learn more about statistics, visit brainly.com/question/26352252

#SPJ4

8 0
2 years ago
Find the measurement which is most accurate to 45.76 kg.
svlad2 [7]

Answer:

  A. 45.77 kg

Step-by-step explanation:

The measurement with the smallest difference from 45.76 is 45.77 kg.

4 0
3 years ago
Question 7(Multiple Choice Worth 3 points)
Taya2010 [7]

Answer: y = one twelfth(x + 2)2

Step-by-step explanation:

just did the test

3 0
3 years ago
Other questions:
  • What is the value of x in the equation 3x – 4y = 65, when y = 4? <br> the answer is x=27
    9·1 answer
  • SHOW WORK! PLEASE HELP ASAP IF YOU CAN :(
    13·1 answer
  • The y-intercept of the line whose equation is 7x - 4y = 8 is what
    9·1 answer
  • the temperature of a city Changed by negative 15 degrees Celsius over a five-week. The temperature change by the same amount eac
    13·1 answer
  • If a triangle has lengths of 3gt and 54ft check all possible lengths for third side
    11·1 answer
  • Solve 2(x + 1) = 2x + 2.<br> A. All real numbers<br> B. No solution<br> C. 0<br> D. 1
    7·2 answers
  • Which of the following is an extraneous solution of (45-3x)^((1)/(2))=x-9
    9·1 answer
  • If z=4.0 and y= 7.2 what is the value of x?
    14·1 answer
  • If one time around the track is 1/4, and I went around 23 times. what are the equation and answer? Please do the equation and in
    12·1 answer
  • Find the solutions of the following linear equation 4 x minus 4 upon 2 = 3 upon 2​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!