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Radda [10]
3 years ago
5

The elevation of city A is 60 feet above sea level; the elevation of city C is 12 feet above sea level. The elevation of city D

is 1 over 2 of the elevation of city C. Part A: Write an expression to represent the elevation, in feet, of city D. (5 points) Part B: Solve the expression and explain why the answer is negative or positive. (5 points)
Mathematics
2 answers:
Likurg_2 [28]3 years ago
3 0

A) 1/2*12 = 6 ft above sea level

B) Because City D is 1/2 of 6, it cannot be negative because we are not multiplying anything by a negative number.

beks73 [17]3 years ago
3 0

Answer:

Part A: \dfrac{1}{2}\times 12\text{ feet}

Part B: 6 feet above sea level and positive

Step-by-step explanation:

The elevation of city A is 60 feet above sea level.

The elevation of city C is 12 feet above sea level.

The elevation of city D is \dfrac{1}{2} of the elevation of city C.

Part A: Expression which shows Elevation of city D in feet above sea level.

\text{Elevation of city D}=\dfrac{1}{2}\times \text{Elevation of city C}

\text{Elevation of city D}=\dfrac{1}{2}\times 12

Part B: Simplify the expression of part A

\text{Elevation of city D}=\dfrac{1}{2}\times 12=6\text{ feet}

The elevation of city D is 6 feet above sea level.

It would be positive because above sea level height is positive and below sea level takes negative.

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Answer: He can predict that 420 students will be in support of the purchase.

Step-by-step explanation:

Since Randy surveyed one student out of every 5 he came across in the cafeteria, it means that if he came across five people, he will survey one, if he came across ten students, he will survey 2 and so on.

If then he surveyed a total of 140 students, then we can actually multiply the number by 5 to know the exact number of students he possibly came across in the cafeteria:

= 140 × 5

= Total of 700 students

If 84 out of the surveyed students supported the purchase, we can find what that figure represents in the total number of students in the cafeteria:

84/140 = x/700

We cross multiply

140 × X = 84 × 700

140X = 58,800

X = 58,800/140

X = 420 students

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Salsk061 [2.6K]

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$5,956.2

Step-by-step explanation:

First we need to find the amount after 5years using the formula

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Serga [27]

Answer:

(8, 5)

Step-by-step explanation:

Let's take a look at the y-intercept, (0, 5).  If the axis of symmetry is x = 4, then the distance from (0, 5) is 4 units.  If we reflect this point (0, 5) about the axis of symmetry x = 4, the resulting point is (8, 5).  In other words, the distance from the y-intercept to the axis of symmetry is 4 units, and so the distance from the y-intercept must be 4 units plus 4 units, or 8 units.

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