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
SSSSS [86.1K]
4 years ago
10

Estimate the solution of a^2=21 to the nearest tenth

Mathematics
1 answer:
inysia [295]4 years ago
5 0
7 i think hope it helps

You might be interested in
Please give the right answer and show work if possible
Step2247 [10]

Answer:

14

Step-by-step explanation:

Sin(∅) = Opposite angle ÷ hypotenuse.

Sin (45) = 7\sqrt{2} ÷ hypotenuse

hypotenuse = 7\sqrt{2} ÷ sin(45)

*********************

Keep in mind

sin(45) = √2÷2

*********************

so we have:  Hypotenuse = 7√2 ÷ (√2÷2)

Hypotenuse= 14.

6 0
3 years ago
Cassandra and Yvette each have a calculator. Yvette starts at a 100 and subtracts 7 each time. Isandro starts at zero and adds 3
34kurt
This can be be solved the following way:
Yvette starts at 100 and subtracts 7 k times, as for Cassandra (or Isandro, the question is not clear on this) she starts at 0 and presses adds 3 k times. This leads to the following equation:
100-7k=3k
100=10k
\\
10=k
So for k=10 they will both display the same number.
We can now either choose the viewpoint of Cassandra or Yvette:
If we chose Yvette then we'll have 100-7*10=30 and for Cassandra we have, 3*10=30.
8 0
3 years ago
Solve the following logarithmic equations.<br> ln(32x^2) − 3 ln(2) = 3
Kazeer [188]

Answer:

x=\pm \frac{\sqrt{e^{3} } }{2}

Step-by-step explanation:

Rewrite the equation using the next propierties:

log(\frac{1}{x} )=-log(x)

ylog(x)=log(x^{y} )

log(x*y)=log(x)+log(y)

ln(32x^{2} )-ln(2^{3})=3\\ ln(32x^{2} )+ln(\frac{1}{2^{3} } )=3\\ln(\frac{32x^{2} }{8})=3\\ ln(4x^{2} )=3

Cancel logarithms by taking exp of both sides:

e^{ln(4x^{2}) } =e^{3} \\4x^{2} =e^{3}

Divide both sides by 4:

x^{2} =\frac{e^{3} }{4}

Take the square root of both sides:

x=\pm \sqrt{\frac{e^{3} }{4} } =\pm \frac{\sqrt{e^{3} } }{2}

6 0
3 years ago
1)<br> I<br> I<br> ? 20-<br> A) 999<br> C) 1219<br> B) 39°<br> D) 1020
WITCHER [35]

Answer:

C

Step-by-step explanation:

\angle{VUW} = 180 - 141 = 39

\angle{WVU} = 180 - (20 + 39) = 121

Answer: 121

8 0
3 years ago
State the horizontal asymptote of the rational function. f(x) = quantity x squared plus three x minus two divided by quantity x
omeli [17]

f(x)=\dfrac{x^2+3x-2}{x-2}\\ D_f=\mathbb{R}\setminus\{2\}\\\\ \displaystyle \lim_{x\to \infty}\dfrac{x^2+3x-2}{x-2}=\lim_{x\to \infty}\dfrac{x\left(x+3-\dfrac{2}{x}\right)}{x\left(1-\dfrac{2}{x}\right)}=\lim_{x\to \infty}\dfrac{x+3-\dfrac{2}{x}}{1-\dfrac{2}{x}}=\dfrac{\infty}{1}=\infty\\ \lim_{x\to -\infty}\dfrac{x^2+3x-2}{x-2}=\lim_{x\to -\infty}\dfrac{x\left(x+3-\dfrac{2}{x}\right)}{x\left(1-\dfrac{2}{x}\right)}=\lim_{x\to -\infty}\dfrac{x+3-\dfrac{2}{x}}{1-\dfrac{2}{x}}=\dfrac{-\infty}{1}=-\infty

The limits are not numbers, so the asymptote doesn't exist.

8 0
3 years ago
Other questions:
  • Question 1 (5 points)
    7·1 answer
  • 8 cm<br>12 cm<br>12 cm<br>8 cm<br>find the perimeter of the rectangle ​
    13·1 answer
  • A water tank in the shape of a cube
    9·1 answer
  • In the figure shown, angle 1 is 90 angle 2 is 38.<br><br> What is the rest?
    8·1 answer
  • How does depreciation affect the cost of owning a car over a period of 5 years
    7·1 answer
  • Matt wants to purchase 3.5 pounds of Swiss cheese for a party. Each pound costs $4.95. How much will Matt pay for the Swiss chee
    6·1 answer
  • Add.
    11·2 answers
  • I need help on math please
    5·2 answers
  • Which of the following equations represents the graph shown?
    7·2 answers
  • Find the volume of a cylinder with a diameter of 10 inches and a height that is three times the radius. Use 3.14 for pi and roun
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!