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Tpy6a [65]
2 years ago
10

Using the following graph, find f(0) and f(-2) ​

Mathematics
2 answers:
larisa86 [58]2 years ago
8 0

Answer:

f(0) =   0

f(-2) =  1

Step-by-step explanation:

f(0) means the value of f when x = 0.  The line is the result of equation f for all points shown on the graph.  Look for the values at x = 0 and x = -2.

They are (0.0) and (-2,1).  This can be written as:

f(0) =   0

f(-2) =  1

laila [671]2 years ago
5 0
F(0) = 0
f(-2) = 1
U look at the x- axis at the 0 and the -2 and then u see the curve where it touched u find the solution
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Fritz is recording the decay of radioactive material. The table displays the
damaskus [11]

Answer:

Every week, the radioactivity decreases by a factor of 5

After 1 week, it goes from 5,000 to 1,000

2 weeks  1,000 / 5 =200

3 weeks 200 / 5 = 40

4 weeks 40 / 5 = 8

5 weeks 8 / 5 = 1.6

6 weeks 1.6 / 5 = 0.064

7 weeks 0.064 / 5 = 0.0128

8 weeks .0128 / 5 = 0.00256

9 weeks 0.00256 / 5 = 0.000512

10 weeks 0.000512 / 5 = 0.0001024

Step-by-step explanation:

3 0
2 years ago
A person must score in the upper 8% of the population on an IQ test to qualify for membership in MENSA, the international high-I
Cloud [144]

Answer:

A person must get an IQ score of at least 138.885 to qualify.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 115, \sigma = 17

(a). [7pts] What IQ score must a person get to qualify

Top 8%, so at least the 100-8 = 92th percentile.

Scores of X and higher, in which X is found when Z has a pvalue of 0.92. So X when Z = 1.405.

Z = \frac{X - \mu}{\sigma}

1.405 = \frac{X - 115}{17}

X - 115 = 17*1.405

X = 138.885

A person must get an IQ score of at least 138.885 to qualify.

5 0
3 years ago
Read 2 more answers
PLEASE HELP!!! I do not understand!!!
sladkih [1.3K]

Answer:

110 + 5x (I'm not sure if you need the dollar signs...if you do, one goes in front of the 110 and one goes in front of the 5)

Step-by-step explanation:

$20 + $90 = $110

<u><em>Equation:</em></u>

110 + 5x

110 represents the base cost of the turtle and the terrarium.

5 represents the cost of the turtle food

x represents the number of weeks that she is purchasing the food.

4 0
3 years ago
-6(x+7)=-4x-2<br> How many solutions does it have
geniusboy [140]

Answer:

Equation have Unique solution i.e x=-20

Step-by-step explanation:

Given Equation:

-6(x+7)=-4x-2

Solving the Equation for 'x'.

           -6(x)-6(7)=-4x-2\\\\-6x-42=-4x-2

Adding '4x'  both sides:

             -6x+4x-42=-4x+4x-2\\\\-6x+4x-42=-2\\\\-2x-42=-2

Adding '42' both sides:

               -2x-42+42=-2+42\\\\-2x=40

                        x=\frac{40}{-2} \\\\x=-20

The equation have Unique solution with the value of x=-20

6 0
3 years ago
***** NO LINKS******
Alika [10]

Answer:

1 inch = 80 miles

Step-by-step explanation:

4 and three quarters = 4.75

380 divided by 4.75 = 80

Double check and multiply 4.75x80

4.75 x 80 = 380

3 0
2 years ago
Read 2 more answers
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