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8090 [49]
3 years ago
12

In places where there are crickets, the outdoor temperature can be predicted by the rate at which crickets chirp. One equation t

hat models the relationship between chirps and outdoor temperature is f=14c+40, where c is the number of chirps per minute and f is the temperature in degrees Fahrenheit. Which statements are true? Select all that apply.
Mathematics
2 answers:
irina1246 [14]3 years ago
8 0

Answer:

See explanation

Step-by-step explanation:

This question requires a list of options.

Since, there are none; I'll give a general explanation to answer this.

We have that:

f = 14c + 40

The general format of an equation in terms of f and c is:

f = mc + b

Where

m = slope and b = y\ intercept

A true statement about the function above is:

The slope of the equation is 14

This means that at every minute, there's an additional 14 chirps from the cricket.

Another true statement about the function is that:

The y intercept is 40.

This means that the initial number of chirps by the cricket is 40

i.e. At time, c = 0 minutes.

There are 40 chirps.

A likely question could be to determine the number of chirps in (say) 5 minutes.

This means that:

c= 5

Substitute 5 for c in f = 14c + 40

f = 14 * 5 + 40

f = 70 + 40

f = 110

This implies there are 110 chirps in 5 minutes

lesantik [10]3 years ago
5 0

Answer:

:)

Step-by-step explanation:

I think you men 1/4 because I have the same problem

f=1/4c+40

f=1/4(110)+40

f=27 1/2 +40

f=67 1/2

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Oduvanchick [21]

Answer:

Va entre-3y-4

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Are 2 + 6x and 2(3x + 1) equivalent
Solnce55 [7]

✳︎ ✳︎ ✳︎ ✳︎ ✳︎ ✳︎ Hello There! :)

To determine whether the two expressions are equivalent, we take the second expression and distribute 2:

2(3x+1)

6x+2=2+6x

And now we know the two expressions are equivalent. If you look, you will remember the Commutative Property that states:

a+b=b+a

In this case, a=6x and b=2.

So we know that the two expressions are equivalent.

Hope this helps! :)

GraceRosalia

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3 0
3 years ago
Private nonprofit four-year colleges charge, on average, $27,293 per year in tuition and fees. The standard deviation is $7,235.
Natali5045456 [20]

Answer:

a) X\sim(27293,(7235)^2)

b) 0.1567

c) P_{70}=31084.14

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $27,293 per year

Standard Deviation, σ = $7,235

We are given that the distribution of cost of college is a bell shaped distribution that is a normal distribution.

a) Distribution of X

Let X be the cost for a randomly selected college. Then,

X\sim (\mu, \sigma^2)\\X\sim(27293,(7235)^2)

b) Probability that a randomly selected Private nonprofit four-year college will cost less than $20,000 per year.

P( x < 20000) = P( z < \displaystyle\frac{20000 - 27293}{7235}) = P(z < -1.008)

Calculation the value from standard normal z table, we have,  

P(x < 20000) = 0.1567

c) 70th percentile for the distribution.

We have to find the value of x such that the probability is 0.7

P( X < x) = P( z < \displaystyle\frac{x - 27293}{7235})=0.7  

Calculation the value from standard normal z table, we have,  

\displaystyle\frac{x - 27293}{7235} = 0.524\\\\x = 31084.14  

The 70th percentile for the distribution of college cost is $31,084.14

4 0
3 years ago
-19x-17 = -93 <br> Also when you solve it has to be with the addition property of equality
Mama L [17]

Answer:

Addition property of equality formula

Lesson Summary

We learned that the addition property of equality tells us that if we add the same quantity to both sides of an equation, then our equation remains the same. The formula is if a = b, then a + c = b + c.

Step-by-step explanation:

7 0
3 years ago
Here is a screenshot:
natima [27]

Answer:

Sam

Step-by-step explanation:

Just put them into a fraction for Sam its 15/5 and the ratio (basically a fraction) is 3/1 so if you simplify the 15/5, you’d get 3/1 which is the same so sam’s ratio is corrrect

4 0
3 years ago
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