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
levacccp [35]
3 years ago
12

Evaluate e^-2to one decimal place.

Mathematics
1 answer:
aleksklad [387]3 years ago
4 0
\bf ~~~~~~~~~~~~\textit{negative exponents}\\\\
a^{-n} \implies \cfrac{1}{a^n}
\qquad \qquad
\cfrac{1}{a^n}\implies a^{-n}
\qquad \qquad 
a^n\implies \cfrac{1}{a^{-n}}\\\\
-------------------------------\\\\
e^{-2}\implies \cfrac{1}{e^2}

plug that in your calculator, yes, your calculator has an [ e ], button for the Euler's constant.
You might be interested in
Find the area of the trapezoid to the nearest tenth.
erica [24]

Answer:

2.2 metres squared

Step-by-step explanation:

We need to find the area of this trapezoid.

The area of a trapezoid is denoted by:

A=\frac{(b_1+b_2)h}{2}, where b_1 and b_2 are the parallel bases and h is the height

Here, we already know the lengths of the two bases; they are 0.9 metres and 2.3 metres. However, we need to find the length of the height.

Notice that one of the angles is marked 45 degrees. Let's draw a perpendicular line from top endpoint of the segment labelled 0.9 to the side labelled 2.3. We now have a 45-45-90 triangle with hypotenuse 2.0 metres. As one of such a triangle's properties, we can divide 2.0 by √2 to get the length of both legs:

2.0 ÷ √2 = √2 ≈ 1.414 ≈ 1.4

Thus, the height is h = 1.4 metres. Now plug all these values we know into the equation to find the area:

A=\frac{(b_1+b_2)h}{2}

A=\frac{(0.9+2.3)*1.4}{2}=2.2

The answer is thus 2.2 metres squared.

<em>~ an aesthetics lover</em>

8 0
3 years ago
Find the area for the following figure.<br> O 124. 86 cm2<br> 62.93 cm2<br> 26.5 cm2<br> 137.45 cm2
Semmy [17]
The answer is 62.93
8 0
3 years ago
X^2+x-12=0 solve ASAP
zzz [600]
X^2+x-12=0 factors out into (x+4)(x-3) so the answer is: x=-4, x=3
6 0
2 years ago
Which two integers is 42 between?<br> -8 and -7<br> -5 and -4<br> -7 and -6<br> -9 and -8
Karo-lina-s [1.5K]

Answer:

6 and 7

Step-by-step explanation:

we know that 42 will lie between 36 and 49

And 36=6; 49=7

so we can be sure that 42 lies between 6 and 7

3 0
3 years ago
How to evaluate a piecewise function ?
8090 [49]

Answer:

So it's going to be 3 times 2 minus 8 3 times 2 is 6 6 minus 8 is negative 2 and that's the answer.

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • The scores of adults on an iq test are approximately normal with mean 100 and standard deviation 15. clara scores 118 on such a
    11·1 answer
  • All of the following are equivalent to 3 : 8 = x : 32 except
    10·1 answer
  • Find the area of a circle with a radius of 1.5 cm
    15·2 answers
  • Suppose it costs ​$49 to roll a pair of dice. you get paid 7 dollars times the sum of the numbers that appear on the dice. what
    11·1 answer
  • Line GH contains points G(–2, 6) and H(5, –3). What is the slope of ?
    14·1 answer
  • Solve the system by substitution.
    10·1 answer
  • There are 20 squares and 12 triangles. What is the simplest ratio of triangles to total shapes?
    10·1 answer
  • 1.Find the slope of the line through (-6, 11) and (15, 20).
    12·2 answers
  • A professor has 7 books they are trying to arrange on a shelf. If the professor selects 3 books at a time, how many different ar
    9·1 answer
  • Explain what the equation
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!