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7nadin3 [17]
2 years ago
5

Easy, please help! asap

Mathematics
2 answers:
Lelu [443]2 years ago
4 0
The answer for this multiple choice is D
Nadusha1986 [10]2 years ago
4 0

Answer:

D. 324 miles

Step-by-step explanation:

The scale is 2 inches: 45 miles.

Let's just say that is 2/45 because the units won't change in this problem.

2 inches = 45 miles

14.4 inches = ???

proportion time ._.

2/45 = 14.4/x

14.4 * 45 = 648

648 / 2 = 324

please give me a thanks!

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Write a system of linear inequalities so the points (1, 2) and (4, -3) are solutions of the system, but the point (-2, 8) is not
Verizon [17]

Answer: \left \{ {{y\leq -\frac{5}{3}x + \frac{11}{3}} \atop {y < 8}} \right

<u>Step-by-step explanation:</u>

(1, 2) and (4, -3)

First, find the slope (m): \frac{y_{2}-y_{1}}{x_{2}-x_{1}}

m = \frac{-3-2}{4-1}

   = -\frac{5}{3}

Next, choose ONE of the points and input the point and slope into the Point-Slope formula: y - y₁ = m(x - x₁)

y - 2 = -\frac{5}{3}(x - 1)

y - 2 = -\frac{5}{3}x + \frac{5}{3}

y      = -\frac{5}{3}x + \frac{11}{3}

Then, determine which inequality symbol will result in (-2, 8) being False (since it is not a solution):

y ___ -\frac{5}{3}x + \frac{11}{3}

8 ___ -\frac{5}{3}(-2) + \frac{11}{3}

8 ___ \frac{1}{3}

8 > \frac{1}{3}

so ≤ makes the statement False

⇒ y ≤ -\frac{5}{3}x + \frac{11}{3}

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

If you need a "system" of inequalities, then you need another equation.

There are infinite possibilities. Graph the points to see what works.  

y < 8   or  x > -2 are two examples.


---> I just realized that the system can be simpler than what I did above:

\left \{ {{x>-2} \atop {y < 8}} \right



4 0
3 years ago
Does the Commutative Property of Addition apply when you add two negative integers?
MAVERICK [17]

The commutative property of addition means we can add two integers in any order. So yes, It would still apply to two negative integers (for example, -2 + -3 and -3 + -2 both equal five)

4 0
4 years ago
Need help please 70 points
zloy xaker [14]
Ok what do you need help with
7 0
3 years ago
Read 2 more answers
Math pls help me big time
pentagon [3]

Answer:

B

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Can someone please help?
lianna [129]
It would be 7 x 28 x 1/2 I think 
3 0
3 years ago
Read 2 more answers
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