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ella [17]
3 years ago
13

The question, “How many ways can 4 students be chosen from a class of 30 students?”, is a(n) _____. combination

Mathematics
2 answers:
Arturiano [62]3 years ago
7 0

B permutation hope this helps!

Lana71 [14]3 years ago
6 0
Answer is A-combination! Hope I helped
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Solve the simultaneous equations<br> y = 2x^2<br> y = 3x + 14
Mekhanik [1.2K]

Answer:

x = -2

And, x = 7 ÷ 2

Step-by-step explanation:

Given that

y = 2x^2

y = 3x + 14

Now equate these two above equations

2x^2 = 3x + 14

2x^2 - 3x - 14

2x^2 -7x + 4x - 14

x(2x - 7) + 2(2x - 7)

(x + 2) (2x - 7)

So it can be x = -2

And, x = 7 ÷ 2

3 0
3 years ago
An element with a mass of 970 g decays by 15.1% per minute how much of the element remaining after 14 minutes
Amanda [17]
The amount of the element remaining (y) in grams after time (t) in minutes is defined by the equation y=970(1-.151)^t. Substitute t=14 into the equation and solve for y. y=970(.849)^14=98.06 rounded to two decimal places.
3 0
3 years ago
Read 2 more answers
Consider a population p of field mice that grows at a rate proportional to the current population, so that dp dt = rp. (note: re
krok68 [10]
This is the concept of differential equations, given that
dp/dt=rp
then:
dp/p=rdt
thus:
ln p=rt+C
p=e^(rt+C)
P=Ke^(rt)
when t=210 days=7 months, p=2k
2k=k×e^(7r)
2=e^(7r)
ln2=7r
r=ln(2)/7
r=0.0990
5 0
3 years ago
Which number produces a rational number when added to 1/2
JulijaS [17]

Answer:

C.   0.314.

Step-by-step explanation:

1/2 is rational. The answer is another rational number.

The only rational number in the list is 0.314.

3 0
3 years ago
Read 2 more answers
A rectangular ground is 40m long 35m board 2m path is constructed inside it find its area​
iren2701 [21]

Answer:

2800

Step-by-step explanation:

solution:

here,

length=40 meter

Breadth=35 meter

height=2meter

area=?

we have,

A=l×b×h

=40×35×2

=2800 ans.

4 0
3 years ago
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