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
Karo-lina-s [1.5K]
3 years ago
14

Help with f(x) = 2.2^x for f (-2)

Mathematics
2 answers:
Zanzabum3 years ago
6 0

Answer:

.20661157

Step-by-step explanation:

f(x) = 2.2^x

Let x=-2

f(-2) = 2.2^-2

The negative exponent put it in the denominator

f(-2) = 1 / 2.2^2

        =.20661157

Fudgin [204]3 years ago
3 0

Answer:

0.2

Step-by-step explanation:

You might be interested in
14 The straight line, L, has the equation y = 5 - 2x
diamong [38]

Answer:

When it crosses y-axis it means that x coordinate must be 0 so let substitute 0 to x, y=5-2*0

So coordinates are [0,5]

4 0
3 years ago
Pleasee help x.x 1. Solve the system by elimination-
patriot [66]
Q1. The answer is x = 1, y = 1, z = 0

<span>(i) -2x+2y+3z=0
</span><span>(ii) -2x-y+z=-3 
</span>(iii) <span>2x+3y+3z=5
</span><span>_________
Sum up the first and the third equation:
</span>(i) -2x+2y+3z=0
(iii) 2x+3y+3z=5
_________
5y + 6z = 5

Sum up the second and the third equation:
(ii) -2x-y+z=-3 
(iii) 2x+3y+3z=5
_________
2y + 4z = 2


(iv) 5y + 6z = 5
(v) 2y + 4z = 2
________
Divide the fifth equation by 2
(iv) 5y + 6z = 5
(v) y + 2z = 1
________
Multiple the second equation by -3 and sum the equation
(iv) 5y + 6z = 5
(v) -3y - 6z = -3
________
2y = 2
y = 2/2 = 1


y + 2z = 1
1 + 2z = 1
2z = 1 - 1
2z = 0
z = 0


-2x-y+z=-3
-2x - 1 + 0 = -3
-2x = -3 + 1
-2x = -2
x = -2/-2 = 1



Q2. The answer is x = -37, y = -84, z = -35

<span>(i) x-y-z=-8 
(ii) -4x+4y+5z=7 
(iii) 2x+2z=4
______
</span>Divide the third equation by 2 and rewrite z in the term of x:
(iii) x+z=2
z = 2 - x
______
Substitute z from the third equation and express y in the term of x:
<span>x-y-(2-x)=-8 
x - y - 2 + x = 8
2x - y = 10
y = 2x - 10
______
Substitute z from the third equation and y from the first equation into the second equation:
</span><span>-4x + 4y + 5z = 7 
-4x + 4(2x - 10) + 5(2 - x) = 7
-4x + 8x - 40 + 10 - 5x = 7
-x -30 = 7
-x = 30 + 7
x = -37
y = 2x - 10 = 2*(-37) - 10 = -74 - 10 = -84
z = 2 - x = 2 - 37 = -35</span>
8 0
3 years ago
Which graph best shows the relationship between the length of one side of a square and its perimeter.
sladkih [1.3K]
The answer is the 1st graph. This is because a square have 4 sides and it is all the same. on the x axis (Side length) when it is 4 the perimeter (Length around the outside) will be 4 x 4 which is 16.

Hope this helps? 
6 0
3 years ago
Read 2 more answers
a graph contains the ordered pair 2 and 4 . Write two different equations that would be possible for this graph . Explain how yo
Gnoma [55]
Y=2x or y=x+2 If you plug in the ordered pairs for both, they fit.
5 0
3 years ago
How are the following three expressions different from each other, if indeed they are? do not just state the value of each but e
Lisa [10]

Answer:

Below.

Step-by-step explanation:

Number is different to the other 2. Its value is +4 because negative 2 squared = + 4.

The other 2 have negative values and -2 = -(2) so they have the same value, -4.

8 0
3 years ago
Other questions:
  • ____________ occurs when an energy source transfers heat directly to another object through space; an example would be an object
    5·2 answers
  • 4/5m=28 can you help me solve this equation step by step?
    15·1 answer
  • 4x-1=4x+7 regroup/ divide by the number next to x
    15·1 answer
  • There are twelve shirts in your closet: five blue, four green, and three red. You randomly select one to wear. What is the proba
    8·1 answer
  • For questions 1–2, find the volume of the given prism. Round to the nearest tenth if necessary. 1. (1 point) 265.1 cm3 274.4 cm3
    10·2 answers
  • Answer the following question<br> 11+3p-7=6p+5-3p
    12·1 answer
  • Solve for x. Round to the nearest tenth, if necessary. 5.5 D 61° х F<br><br>Please help​
    8·1 answer
  • What is the outlier in the data set shown below?<br><br><br> A. 6<br> B. 36<br> C. 40<br> D. 46
    11·2 answers
  • a certain star is 4.4x10^2 light years away from the sun one light year is about 5.9x10^12. how far from the earth in miles is t
    5·1 answer
  • COMPLETE<br> Find the value of the function for O.<br> sin(45°) = ?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!