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Oduvanchick [21]
3 years ago
15

Which graph represents the function f(x)=−2^x−1?

Mathematics
1 answer:
finlep [7]3 years ago
5 0

Answer:

The graph in the bottom right corner

You might be interested in
A cookie factory monitored the number of broken cookies per pack yesterday.
trapecia [35]

Answer:

Confidence Interval - 2.290 < S < 2.965

Step-by-step explanation:

Complete question

A chocolate chip cookie manufacturing company recorded the number of chocolate chips in a sample of 50 cookies. The mean is 23.33 and the standard deviation is 2.6. Construct a 80% confidence interval estimate of the standard deviation of the numbers of chocolate chips in all such cookies.

Solution

Given  

n=50

x=23.33

s=2.6

Alpha = 1-0.80 = 0.20  

X^2(a/2,n-1) = X^2(0.10, 49) = 63.17

sqrt(63.17) = 7.948

X^2(1 - a/2,n-1) = X^2(0.90, 49) = 37.69

sqrt(37.69) = 6.139

s*sqrt(n-1) = 18.2

s\sqrt{\frac{n-1}{X^2 _{(n-1), \frac{\alpha }{2} } } \leq \sigma \leq s\sqrt{\frac{n-1}{X^2 _{(n-1), 1-\frac{\alpha }{2} } }

confidence interval:

(18.2/7.948) < S < (18.2/6.139)

2.290 < S < 2.965

8 0
3 years ago
Solve:<br> 3x−5 = 9. <br> A. x = −3 <br> B.x = 2 <br> C.x = 7 <br> D.x = 8
Alina [70]

Answer:

Step-by-step explanation:

3x-5=9

3x-5+5=9+5

3x=14

\frac{3x}{3}=\frac{14}{3}

x=\frac{14}{3}

x ≈ 4.66667

4 0
3 years ago
Read 2 more answers
A pet supply store sells dog biscuits and cat treats. The store has 27 boxes of dog biscuits and 21 pouches of cat treats/each b
Gre4nikov [31]

Answer:

There are more cats treats. 504 treats

Step-by-step explanation:

27 boxes of dog biscuits. Each 18 biscuits

27*18=486 biscuits

21 pouches of cat treats. Each 24 treats.

21*24=504

3 0
3 years ago
A ^2+b^2=c^2 solve for c
musickatia [10]
Take the root of both sides, and then solve. 
c = sqrt a^2 + b^2, - sqrt a^2 + b^2.

3 0
3 years ago
If 52 is 130% of a number, is the number greater then or less the 52? Explain
olga_2 [115]
X= a number

If 52 is 130% of a number, then we multiply the unknown number by 130%.

x * 130%= 52
convert % to decimal (130%÷100)

1.3x= 52
divide both sides by 1.3

x= 40


ANSWER: The unknown number is 40, so it is less than 52. We multiply the unknown number by 130% to equal 52.

Hope this helps! :)
3 0
3 years ago
Read 2 more answers
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