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
Serhud [2]
3 years ago
9

Please help. I will give you a brainliest.

Mathematics
2 answers:
mixas84 [53]3 years ago
4 0

Answer:

Subtracting 4.2x from.

Step-by-step explanation:

Hope this helped!

GREYUIT [131]3 years ago
3 0

Answer:

second choice

Step-by-step explanation:

You might be interested in
The mathematical theory that explores the consequences of making the allocation of units to treatments by means of some random m
Hatshy [7]

Answer:

The correct option is C

Step-by-step explanation:

Randomization is a method based on chance in which study participants are assigned to treatment groups.

5 0
3 years ago
A european outlet supplies 220 v (rms) at 50 hz. how many times per second is the magnitude of the voltage equal to 220 v
Norma-Jean [14]
The amplitude of the sine wave with RMS value of 220 V is
A = 220√2 volts.

The sine waveform is
v(t) = 220√2 sin(2πft)
where 
f = 50 Hz, the frequency.

The period is
T = 1/f = 1/50 = 0.02 s

Use a graphical solution (shown below) to determine the number  of times that v(t) = 220 in the interval t = [0, 0.02] s.

There are 2 instances when the voltage is 220 V in the interval t =[0, 0.02] s.
Note that 1 second is an integral multiple of 0.02 seconds.
Therefore in the interval [0,1], the number of instances when v(t) = 220 V is 
(1/0.02)*2 = 100

Answer:  100



5 0
4 years ago
Factor the expression: 14x + 21y – 7z
lozanna [386]

Answer:

7 ( 2x + 3y - z)

Step-by-step explanation:

To factor this expression, you need to find the GCF, which is 7.

7 ( 2x + 3y - z)

7 0
3 years ago
Read 2 more answers
Can someone answer this step by step
Virty [35]

Answer:

where is the question dear?

4 0
4 years ago
Read 2 more answers
If logx = -4, what is x?
just olya [345]

Answer:

logx=-4

log10x=-4

10^-4=x

x=1÷10000

7 0
3 years ago
Other questions:
  • Solve for r in r/r+15 = 3/8 by cross multiplying.
    13·1 answer
  • How to answer it please please please help
    12·1 answer
  • Richard can read 1/4 of a book in 3/5 of an hour. At this rate, how much can Richard read in one hour
    12·1 answer
  • Find the radius of a circle with the given circumference. 15 ft. r =
    9·1 answer
  • At the movies, Aaron buys popcorn for $5.25 and a bottle of water for $2.50. He pays with a $10 bill. How much change should Aar
    12·2 answers
  • Find the volume in terms of pi of a sphere with a surface area of 9 pi square feet
    5·2 answers
  • 247 is 38% of what amount
    5·2 answers
  • 15 points!!!!!!! 
    13·1 answer
  • Please help ASAP! The best answer get brainliest!!
    6·1 answer
  • -3(p-7) ≥ 21 sovleplzzz
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!