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
mote1985 [20]
3 years ago
14

Which substitution method should be the best used to solve which system of equations

Mathematics
1 answer:
lidiya [134]3 years ago
4 0

Answer: 6x+2y=1

Step-by-step explanation:

because it just is

You might be interested in
(This is for a game and I don't know the math) to make 166 crates of lean. If it take about 10 mins to make 4 how long would it
pickupchik [31]
Four takes 10 minutes.
166/4=41.5
There are 41.5 fours in 166
Each four takes 10 minutes
41.5 fours takes 41.5*10=415 minutes
3 0
2 years ago
Read 2 more answers
A spherical hot-air balloon has a diameter of 55 feet. When the balloon is inflated, the radius increases at a rate of 1.5 feet
abruzzese [7]

Answer:

The time it would take to inflate the balloon to approximately two-thirds of its maximum volume is approximately 46.90 minutes

Step-by-step explanation:

The given parameters are;

The diameter of  the balloon  = 55 feet

The rate of increase of the radius of the balloon when inflated = 1.5 feet per minute

We have;

dr/dt = 1.5 feet per minute = 1.5 ft/min

V = 4/3·π·r³

The maximum volume of the balloon = 4/3 × 3.14 × 55³ = 696556.67 ft³

When the volume is two-thirds the maximum volume, we have;

2/3 × 696556.67 ft³ = 464371.11 ft³

The value of the radius, r₂ at that point is found as follows;

4/3·π·r₂³ = 464371.11 ft³

r₂³ = 464371.11 ft³ × 3/4 = 348278.33 ft³

348278.333333

r₂ = ∛(348278.33 ft³) ≈ 70.36 ft

The time for the radius to increase to the above length = Length/(Rate of increase of length of the radius)

The time for the radius to increase to the above length ≈ 70.369 ft/(1.5 ft/min) ≈ 46.90 minutes

The time it would take to inflate the balloon to approximately two-thirds of its maximum volume ≈ 46.90 minutes.

4 0
3 years ago
What is the diameter of this circle if the circumference is 18x inches?
Genrish500 [490]

The diameter is 5.72958

(in order to find the diameter use the equation d= C/pi )

7 0
3 years ago
Read 2 more answers
Limit of x^2-81/x+9<br> As x goes toward -9
Semmy [17]
Hello,

Use the factoration

a^2 - b^2 = (a - b)(a + b)

Then,

x^2 - 81 = x^2 - 9^2

x^2 - 9^2 = ( x - 9).(x + 9)

Then,

Lim (x^2- 81) /(x+9)

= Lim (x -9)(x+9)/(x+9)

Simplity x + 9

Lim (x -9)

Now replace x = -9

Lim ( -9 -9)

Lim -18 = -18
_______________

The second method without using factorization would be to calculate the limit by the hospital rule.

Lim f(x)/g(x) = lim f(x)'/g(x)'

Where,

f(x)' and g(x)' are the derivates.

Let f(x) = x^2 -81

f(x)' = 2x + 0
f(x)' = 2x

Let g(x) = x +9

g(x)' = 1 + 0
g(x)' = 1

Then the Lim stay:

Lim (x^2 -81)/(x+9) = Lim 2x /1

Now replace x = -9

Lim 2×-9 = Lim -18

= -18




7 0
3 years ago
Your price on a particular model is $125 however to get a service contract you offer to sell it for $115 how much discount are y
Arisa [49]
It would be an 8 percent discount because 115 is 92 percent of 125.
6 0
3 years ago
Other questions:
  • Simplify the following<br><br> (-5/6)+(2/4)
    13·1 answer
  • What are the answers to these two questions? Help please!
    6·1 answer
  • Jalen has a balance of $1870 on a credit card with an APR of 19.7%, compounded daily. About how much will he save in interest ov
    5·1 answer
  • Define a major arc. How do you name a major arc?
    5·2 answers
  • A digital scale reports a 10kg weight as weighing 8.975kg. which of the following is true?
    12·1 answer
  • 1 consider the surface area of the pyramid shown
    10·1 answer
  • The number cube is rolled and a coin is tossed .How can you sketch a tree diagram to represent the sample space ?
    15·1 answer
  • Which type of correlation would you expect to see between the amount of time it takes to finish a test and the grade on the test
    11·2 answers
  • Help me please. I'm very bad at math and Need help
    6·2 answers
  • HELP ME, SOMEONE AND ANYONE I NEED YOUR HELP
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!