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emmasim [6.3K]
3 years ago
13

A solution to the equation 2x^2+3x+2=0 is

Mathematics
1 answer:
Sidana [21]3 years ago
7 0
0 is a solution to this equation.
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What is the surface area of the sphere below?
tatiyna

Hey there! I'm happy to help!

To find the surface area of a sphere, here is what you do.

You square the radius.

4²=16

You multiply by 4.

16×4=64

And you multiply by pi!

64×π=64π

Therefore, the surface area of the sphere is A. 64π units². It's that easy!

Now you can find the surface area of a sphere! Have a wonderful day! :D

3 0
3 years ago
20 POINTS PLEAE HELP!!!!!!!!!!!!!!!
Alina [70]
His first payment is $100, thus a₁ = 100.

the next "term", month will be 1.1 times more than the one before, namely r = 1.1, the common ratio.

\bf \qquad \qquad \textit{sum of a finite geometric sequence}
\\\\
S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
a_1=100\\
r=1.1\\
n=20
\end{cases}

\bf \sum\limits_{i=1}^{20}~100(1.1)^{i-1}\qquad \qquad\qquad  \qquad S_{20}=100\left( \cfrac{1-1.1^{20}}{1-1.1} \right)
\\\\\\
S_{20}=100\left( \cfrac{1-\stackrel{\approx}{6.727499949}}{-0.1} \right)\implies S_{20}\approx 100(57.27499949)
\\\\\\
S_{20}\approx 5727.4999493256

is the serie divergent or convergent?

well, to make it short, when the common ratio is 0 < | r | < 1, namely a fraction between 0 and 1, only then the serie is convergent, namely it reaches a fixed value, now in this case, 1.1 is a value larger than anything between 0 and 1, so no dice.
5 0
3 years ago
Read 2 more answers
Is the square root of 1/9 rational or irrational
lyudmila [28]

The square root of 1/9 is 1/3 and it is a Rational Number.

5 0
3 years ago
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scientist needs 120 liters of a 20% acid solution for an experiment. The lab has available a 25% and a 10% solution. How many li
sattari [20]

Answer:

The scientist needs 80 liters of 25% solution and 40 liters of 10% solution.

Step-by-step explanation:

If x is the liters of 25% solution, and y is the liters of 10% solution, then:

x + y = 120

0.25x + 0.10y = 0.20(120)

Solve the system of equations using substitution or elimination.  Using substitution:

0.25x + 0.10(120 − x) = 0.20(120)

0.25x + 12 − 0.10x = 24

0.15x = 12

x = 80

y = 40

The scientist needs 80 liters of 25% solution and 40 liters of 10% solution.

4 0
3 years ago
A kite is flying 12 ft off the ground. Its line is pulled taut and casts a 5-ft shadow. Find the length of the line. If necessar
Sergio [31]
A kite is flying 12 ft off the ground and falls into a pool full of kids then kills them because casts a 5 ft shadow fund the length of the line
7 0
2 years ago
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