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insens350 [35]
3 years ago
14

SetsThe table represents a function.What is f(-2)?TITLETE♡ ♡ooooHT​

Mathematics
1 answer:
jek_recluse [69]3 years ago
4 0

Answer:

can you elaborate more on your question please

if this is the question or similar. An exponential function is given in the form f(x)-a*bx. If f(0)=3 and f(1)=15, what's the value of f(-2)?

this is how to solve it:

f(0) = 3 = a*b0  Therefore 3 = a (1) 

f(0) = 3 = a*b0  Therefore 3 = a (1)  f(1) = ab = 15 

f(0) = 3 = a*b0  Therefore 3 = a (1)  f(1) = ab = 15  3b =15 

f(0) = 3 = a*b0  Therefore 3 = a (1)  f(1) = ab = 15  3b =15  b =5 

f(0) = 3 = a*b0  Therefore 3 = a (1)  f(1) = ab = 15  3b =15  b =5  a =3 b =5 

f(0) = 3 = a*b0  Therefore 3 = a (1)  f(1) = ab = 15  3b =15  b =5  a =3 b =5  f(-2) = 3.5-2 = 3/25

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Following the order of operations, exponents should be simplified after completing all multiplication and division.
xenn [34]
False

Exponents should not be simplified.
6 0
3 years ago
A fish tank has 9 goldfish, 6 tetras, 5 snails and 3 platies. What is the ratio of tetras to platies​
Andrei [34K]

Answer:

6:3

Step-by-step explanation:

6 tetras and 3 platies

3 0
3 years ago
samantha threw an apple out of a window from the tenth floor of her appartment building. the equation y = -16t^2+120 can be used
ella [17]
Answer:
time taken = 2.74 seconds

Explanation:
We are given that:
y = -16t² + 120 models the situation where:
y is the floor number
t is the time taken for the apple to hit the ground

We are also given that the floor number (y) is 10. Therefore, all we have to do is substitute with y in the above equation and solve for the time t as follows:
y = -16t² + 120
10 = -16t² + 120
120 - 10 = 16t² 
110 = 16t²
t² = 110/16
t² = 6.875
either t = 2.74 seconds ..........> accepted
or t = -2.74 seconds .........> rejected as time cannot be in negative

Hope this helps :)
5 0
3 years ago
The mayor of a town has proposed a plan for the annexation of an adjoining community. A political study took a sample of 900 vot
Stells [14]

Answer:

z=\frac{0.75 -0.72}{\sqrt{\frac{0.72(1-0.72)}{900}}}=2.00  

Now we can calculate the p value. Since is a bilateral test the p value would be:  

p_v= P(Z>2) =0.0228

Since the p value is lower than the significance level of 0.05 we have enough evidence to conclude that the true proportion of residents favored annexation is higher than 0.72 or 72%

Step-by-step explanation:

Information given

n=900 represent the random sample selected

\hat p=0.75 estimated proportion of residents favored annexation

p_o=0.72 is the value that we want to test

represent the significance level

z would represent the statistic

p_v represent the p value

Hypothesis to test

The political strategist wants to test the claim that the percentage of residents who favor annexation is above 72%.:  

Null hypothesis:p\leq 0.72  

Alternative hypothesis:p > 0.72  

The statistic for this case is given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Replacing the data given we got:

z=\frac{0.75 -0.72}{\sqrt{\frac{0.72(1-0.72)}{900}}}=2.00  

Now we can calculate the p value. Since is a bilateral test the p value would be:  

p_v= P(Z>2) =0.0228

Since the p value is lower than the significance level of 0.05 we have enough evidence to conclude that the true proportion of residents favored annexation is higher than 0.72 or 72%

3 0
3 years ago
Anyone know the answers to this IMP Sequences Quiz 1?
IRISSAK [1]

Answer:

im sorry, i cant see the screen very well...

Step-by-step explanation:

5 0
3 years ago
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