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Readme [11.4K]
3 years ago
5

A map is made of a park. The scale from the park to the map is 36 mi to 6 cm. The length of great oaks trail is 4.5 cm on this m

ap. The scale from the same park to a different map is 24 mi to 3 cm. The length of salamander trail is 3.5 cm on that map. Which is the longer trail, great oaks trail or salamander trail?
Mathematics
1 answer:
mina [271]3 years ago
7 0

Answer:

Salamander trail is longer than great oaks trail.

Step-by-step explanation:

We have the data from two different maps of the same park.

In the first map the length of great oaks trail is 4.5 cm

The scale from the park to the map is 36 mi to 6 cm ⇒

We can find the real length of great oaks trail writing the following equivalence :

\frac{36mi}{6cm}=\frac{x}{4.5cm}

Where x is the real length of great oaks trail ⇒

x=\frac{(36mi).(4.5cm)}{6cm}=27mi

We find that the real length of great oaks trail is 27 mi

In the second map the length of salamander trail is 3.5 cm

The scale from the park in the second map is 24 mi to 3 cm.

Again we can find the real length of salamander trail writing the equivalence :

\frac{24mi}{3cm}=\frac{y}{3.5cm}

Where y is the real length of salamander trail ⇒

y=\frac{(24mi).(3.5cm)}{3cm}=28mi

We find that the real length of salamander trail is 28 mi.

Therefore salamander trail is longer than great oaks trail.

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Answer:

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Step-by-step explanation:

Given the path of the toy modeled by the function f(x)=−x^2+4x+5, where x is the number of feet the toy is from Emmy and f(x) is the height of the toy.

AT maximum height, the velocity of the toy will be zero. Hence;

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x = 2

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Substitute x = 2 into the given function;

f(x)=−x^2+4x+5

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f(2) = -4+8+5

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Hence the maximum height of the toy is 9feet

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3 years ago
Do ∠ABE and ∠DBC share a ray?
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Step-by-step explanation:

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4 years ago
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3 years ago
A school has 3400 students. They conduct a random sample of 124 students and find that 38 of them hate the school.
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Answer:

a) We need a sample size of at least 2401.

b) We need a sample size of at least 1936.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.

In which

z is the zscore that has a pvalue of .

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We use , which is when we are going to need the largest sample size.

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The value of a boat, in dollars, x years after its purchase is represented by the function.
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The average decrease in value can be solve by first solving the value at year 1 and year 2
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at x = 1

<span>f(x) = 10,000(0.73)^x
</span><span>f(1) = 10,000(0.73)^(1)
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at x = 2
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