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AnnyKZ [126]
3 years ago
11

Identify the graph of -2i need help asap

Mathematics
2 answers:
scoray [572]3 years ago
7 0

Answer:

yea

Step-by-step explanation:

Gelneren [198K]3 years ago
5 0
Picture to go with the question ?
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Let f(x)=a(2)^x. This exponential function is intersected twice by the line g(x)=x+b. One intersection is at point P(-2,2). Find
mr_godi [17]

Answer:

See below

Step-by-step explanation:

To find the values of a and b, we use the intersection point P.

Since the graph of f is intersected by P=(-2,2), f(-2)=2, that is, a(2)^(-2)=2. Then a=2(2)²=8.

Since the graph of g is intersected by P=(-2,2), g(-2)=2, that is, -2+b=2. Then b=2+2=4.

Hence a=8, b=4.

To find the other point of intersection Q, we need to find a number x such that f(x)=g(x), that is, 8(2)^(x)=x+4. Rewrite this equation as follows:

f(x)=8(2^x)=2^3(2^x)=2^{3+x}=g(x)=x+4

It is not easy to solve this equation analitically. Instead, you can apply a quantitative method. First, the left hand side is an exponential function, so it is always positive. Then the solution will be a number in which the right side (x+4) is positive, that is, x > -4. The solution is an integer, then the possible values are x=-3,-2,-1,0,1,2,...

Now, the RHS must be a power of two, so the possible integers are x=-3,-2,0,4,12,28,... However, the LHS grows very quickly, while the LHS grows slowly. Then, it is only necessary to test small integer values (we already know that x=-2 is a solution).

If we test with x=-1, we get 2²=4=3, then x=-1 is not a solution. Any x>-1 will not be a solution, because f increases much faster than g, and then they won't intersect. So our possibilities reduce to x=-3,-2. Taking x=-3, we get f(-3)=2⁰=1=-3+4=g(-3). Thus, (-3,0) is the other point of intersection Q. (r=-3, s=0).  

7 0
3 years ago
Please answer correctly!! I’ll mark as brainliest! <br><br> No links no fake answers
ExtremeBDS [4]

Answer:

6) 33

7) 26.5

..................

3 0
3 years ago
To what power must you raise the expression 7^1/2 to get 7 as the result?
Anvisha [2.4K]

Answer:

2

Step-by-step explanation:

(7^1/2)^2=7^(1/2*2)=7

4 0
2 years ago
The girl scouts are planning to sell chocolate cookies at $10.50 and lollipops at $2.50 each. They were able to collect $350 in
12345 [234]

Answer: 389

Step-by-step explanation: well if there is lollipops for $2.50 each and they sold thrice as many lollipops then they have sold 7.5 of the lollipops and if you sell thrice of the cookies then that will be 31.5 and if you add 7.5 and 31.5 that will be 39 so the real answer is 389.

5 0
3 years ago
All the answers please
Nata [24]

Answer:

6. 4

7. 40

8. 10

9. 4

10. 21

Step-by-step explanation:

6 0
3 years ago
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