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Yuliya22 [10]
4 years ago
12

How many decameters are there in 4.5 kilometres

Mathematics
2 answers:
Zina [86]4 years ago
7 0
There are 450 decameters in 4.5 kilometres
erica [24]4 years ago
5 0
There would be .45 decameters in 4.5 kilometers. Move the decimal to the left one.
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Cities A & B are 5 inches apart on a map. Cities Ce Dare 4 inches apart. If C & D are 900 miles apart how many miles apa
Afina-wow [57]

Answer:

<u>Cities A and B are 1,125 miles apart</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Distance between A and B in the map = 5 inches

Distance between C and D in the map = 4 inches

Real distance between C and D = 900 miles

2. How many miles apart are cities A and B?

We will solve the question, using Direct Rule of Three, as follows:

Distance in the map      Real distance

A - B     5 inches                    x

C - D     4 inches                900 miles

***************************************************

4x = 900 * 5

4x = 4,500

x = 4,500/4

x = 1,125 miles

<u>Cities A and B are 1,125 miles apart</u>

Same answer to question 14701120, answered by me today

8 0
4 years ago
Y = 3x2 − 18x − 19.
Crank

Answer:

  A) y = 3(x -3)^2 -46

  B) (3, -46)

  C) look at the y-coordinate of the vertex

Step-by-step explanation:

A) Factor the leading coefficient from the variable terms.

  y = 3(x^2 -6x) -19

Inside parentheses, add the square of half the x-coefficient. Outside, subtract the same value.

  y = 3(x^2 -6x +9) -19 -3(9)

  y = 3(x -3)^2 -46

__

B) Compared to the vertex form, ...

  y = a(x -h)^2 +k

we find a=3, (h, k) = (3, -46).

The vertex is (3, -46).

__

C) The vertex is an extreme value (as is any vertex). The sign of the leading coefficient tells you whether the parabola opens upward (+) or downward (-). This parabola opens upward, so the vertex is a minimum.

If the leading coefficient is positive, the y-coordinate of the vertex is a minimum. If the leading coefficient is negative, the y-coordinate of the vertex is a maximum.

3 0
3 years ago
Hey help me with this question plzzzz
Wittaler [7]
<h3>Two Answers: choice C, choice D</h3>

Look at where we don't have repeating x values. This happens with function C and function D. All the x values are unique for each choice mentioned.

In choices A, B, and E, the value x = -3 repeats itself. So we don't have a function for either of these. A function is only possible if any input (x) leads to exactly one output (y).

6 0
3 years ago
Read 2 more answers
A circle is cut from a square piece of cloth, as shown:
leonid [27]

a = \pi \:  {r}^{2}
r =  \frac{36}{2}
Using pi at 3.14 the answer is 1,017.36
8 0
4 years ago
Read 2 more answers
Part A: What is the y-intercept of the function, and what does this tell you about the car?
jeyben [28]
There's an x and y intercept the y is how tall the car is
7 0
3 years ago
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