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
Juli2301 [7.4K]
3 years ago
7

2 questions here:

Mathematics
2 answers:
solmaris [256]3 years ago
6 0
<span>1. Make y the subject 
a) 4y=12x+18
y = 3x + 4.5

b) 2x=7-3y
3y = -2x + 7
y = -2/3x + 7/3

2.
a) what is the equation of the line which passes through both (-2,-4) and (6,16)

slope = (16 + 4)/(6 +2) = 20/8 = 2.5
y = mx + b
-4 =2.5(-2) +b
-4 = -5 +b
b = 1

equation
y = 2.5x + 1


b) what is the equation of the line perpendicular to y= 1/2X + 7 passing through point (3,9)

</span>y= 1/2X + 7
slope = 1/2

slope of line perpendicular = -2

passing through point (3,9)

y = mx + b
9 = -2 (3) + b
b = 15

equation

y = -2x + 15

Bingel [31]3 years ago
4 0
Hello here is a solution : 

You might be interested in
What is 52,437 rounded to the nearest hundred?
WINSTONCH [101]
52400

Round the 400 down
5 0
3 years ago
Read 2 more answers
The product of three whole numbers is 120 how many different possibilities are there for the three whole numbers
Sphinxa [80]
We can factor 120 into
2 * 2 * 2 * 3 * 5

I think there are nine different possibilities
1) 8 * 3 * 5
2) 4 * 2 * 15
3) 4 * 6 * 5
4) 4 * 10 * 3
5) 2 * 2 * 30
6) 2 * 3 * 20
7) 2 * 5 * 12
8) 2 * 6 * 10
9) 2 * 15 * 4



8 0
3 years ago
Read 2 more answers
A group of 5 campers used a total of 12 gallons of water on a camping trip. Each camper used the same amount of water. How many
Gnesinka [82]
(12 gal)/5 = 2.4 gal

Each camper used 2.4 gallons of water.
6 0
3 years ago
Mr Kendrick is trying to organize his year 7 class into rows for their class photograph. If Mr Kendrick wishes to organize the 2
inysia [295]
Just list the factors of 24. Those are the possible numbers of students that can be in each row.

1,2,3,4,6,8,12,24 are the possible row sizes.
5 0
4 years ago
When determining how well an observed set of frequencies fits an expected set of frequencies, what is the test statistic
sergij07 [2.7K]

Answer: \chi^2 test statistic.

Step-by-step explanation:

The chi-square (\chi^2  ) test is a non-parametric statistical test(also known as Goodness of fit test) which is used to determine if a distribution of observed frequencies differs from the expected frequencies.

Chi-square statistic uses either nominal (categorical) or ordinal level data.

Hence, When determining how well an observed set of frequencies fits an expected set of frequencies, the test statistic is \chi^2 test statistic.

6 0
3 years ago
Other questions:
  • Which graph represents a function?
    11·1 answer
  • On which number line do the points represent negative seven and one over two and +1?
    13·2 answers
  • How many models oder 100 do you need to model 3200? Explain.
    8·1 answer
  • What is the only solution of 2x2 + 8x = x2 – 16
    14·2 answers
  • Hey guys can you help me im in pain and cant think strait.
    8·1 answer
  • Use the number line to find 3/4 × 2/5. Label all the parts above and below.
    13·2 answers
  • Solve the inequality and graph the solution on the line provided.
    6·2 answers
  • Which expression is not equivalent to a · c · 5 · 5?<br><br> 25 ca<br> 10 ac<br> 25 ac
    10·1 answer
  • What is the answer for ( c )
    9·1 answer
  • Solve the equation. (x + 4)^2 = 15 - 2x^2.<br><br> Quadratic Formula
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!