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seropon [69]
2 years ago
11

HURRY PLEASE!!!

Mathematics
1 answer:
ozzi2 years ago
5 0
1:04pm pretty sure i think that’s right
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What is the solution to x 4 – 12x 2 + 10 > 0?
Umnica [9.8K]

Answer: The picture contains the answer and the steps

5 0
2 years ago
At which root does the graph of f(x) = (x – 5)3(x + 2)2 touch the x axis?
LuckyWell [14K]
We have that
f(x) = (x – 5)³(x + 2)²

we know that
<span>the roots can touch or cross the x axis

</span>The way you can tell if the graph is going to cross the x-axis or just touch the x-axis is by looking at the power of the factor.

(x - 5)³ has a power of 3 which is an ODD number. An ODD power means that the graph will cross through the x-axis.

(x + 2)² has a power of 2 which is an EVEN number. An EVEN power means that the graph will touch the x-axis.

therefore

the answer is
<span>the graph of f(x) touch the x axis for the root x=-2
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see the attached figure

5 0
3 years ago
Read 2 more answers
The current in a circuit element is i(t) = 3(1 - e-2t) A when t ≥ 0 and i(t) = 0 when t &lt; 0. The total charge that has entere
lesantik [10]

Answer:

A=-3/2

B=3

c=3/2

a=-2

Step-by-step explanation:

Knowing that for t>0 i(t)=2\left(1-e^{-2t}\right) A, i(t)=0 when t<0 and using the definition of charge

q(t)=\int_{-\infty}^0i(t')dt'+\int_0^t i(t')dt'=0+\int_0^t i(t')dt'

The first term corresponds to q(0), the charge accumulated before t=0, in this case it luckily gives zero so we don't have to worry about it.

Let's proceed and integrate i(t) then when t>0

i(t)=3\int_0^t \left[ \int_0^tdt'-\inte_0^t e^{-2t'}dt' \right]dt'=3\left[ t+\frac{1}{2}\left( e^{-2t}-1 \right) \right]=3t+\frac{3}{2}e^{-2t}-\frac{3}{2}\,\, C

It is clear that:

A=-3/2

B=3

c=3/2

a=-2

4 0
3 years ago
Each of the 6 cats in a pet store was weighed. Here are their weights (in pounds): 15,8,14,16,14,9. Find the mean and median wei
liq [111]

Step-by-step explanation:

for mean w. you have to add up all the values (cat weights) and divide them by the number of cats

and for median w. you need to compare the values from the smallest to the largest and cross out the numbers from the ends. Since there are 6 cats here (odd number) you will have 2 values left. Add them up and divide them by 2 (since there are 2)

3 0
2 years ago
the side length of a square can be expressed as 2x+3. If the area of the square is 121 square meters, what is the value of x?
lyudmila [28]

Answer:

x=4

Step-by-step explanation:

(2x+3)^2=121

2x+3=square root of 121

2x+3=11

2x=11-3

2x=8

x=4

(in a square all sides are equal therefore area =length ×width where length and width=2x+3)

6 0
2 years ago
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