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Mathematics

2 answers:

belka [17]2 years ago

5 0

Answer:

pizza , or KFC, chic fil a

xz_007 [3.2K]2 years ago

4 0

Answer:

mcdonalds or chipotle or food your parents make or pizza

Step-by-step explanation:.

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Two cars leave at the same time from points A and B, the distance between them is 280 km. If the cars meet each other, they’ll m

kykrilka [37]

Set up the following equations:

$2x + 2y = 280$

$14x - 14y = 280$

x represents car A's speed, and y represents car B's speed.

We'll use elimination to solve this system of equations. Multiply the first equation by 7:

$(2x + 2y = 280) * 7 = 14x + 14y = 1960$

$14x - 14y = 280$

Combine both equations:

$28x = 2240$

Divide both sides by 28 to get x by itself:

$x = 80$

The speed of car A is 80 mph.

Since we now know the value of one of the variables, we can plug it into the first equation:

$2(80) + 2y = 280$

$160 + 2y = 280$

Subtract 160 from both sides.

$2y = 120$

Divide both sides by 2 to get y by itself:

$y = 60$

The speed of car B is 60 mph.

7 0

4 years ago

A circle has central angle measuring 2pi/5 radians that intersects an arc of length 20cm what is the length of the radius of the

Alik [6]

<h2>Answer:</h2><h2>The radius of the circle = 15.92 cm</h2>

Step-by-step explanation:

Given, the central angle of the arc = $\frac{2\pi }{5}$ = 1.256