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Marysya12 [62]
2 years ago
8

Lin runs 5 miles in 40 minutes.

Mathematics
1 answer:
natima [27]2 years ago
3 0
8 mins
1 mile
1 hr and 12 mins
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I have NO idea how to do this to be honest.
vazorg [7]
(-5a)(-3a ²)
= 
15a³

-5 x -3 = 15 ( negative times negative = positive)
a x a² = a³ ( when multiplying exponents, you add the exponents together )
4 0
3 years ago
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The sum of the digits of a two-digit number is 6. when the digits are reversed, the number decreased by 18. find the original nu
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<span>2x + x = 12
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3 years ago
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if you add all of it together but subtract his debts that’s your answer i’m pretty sure. hope it helps!
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2 years ago
HELP ASSAP WITH THIS QUESTION 40 POINTS
zhuklara [117]
 7x+2y=2

steps:
y+21=-7/2x(x-6)
y+21=-7/2x+21
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2(7/2x+y=0)
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7 0
3 years ago
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a boat on the Potomac River travels the same distance downstream in 2/3 hour as it does going upstream in 1 hour. If the speed o
lord [1]
\bf \begin{array}{ccccllll}&#10;&distance&rate&time(hrs)\\&#10;&-----&-----&-----\\&#10;upstream&d&r-3&\frac{2}{3}&#10;\\\\&#10;downstream&d&r+3&1&#10;\end{array}\\\\&#10;-----------------------------\\\\&#10;thus\qquad &#10;\begin{cases}&#10;d=(r-3)\frac{2}{3}&#10;\\\\&#10;d=(r+3)1&#10;\end{cases}\qquad d=d\qquad thus&#10;\\\\\\&#10;(r-3)\cfrac{2}{3}=(r+3)1

notice, the distance is the same, upstream or downstream, thus is "d" for both

solve for "r"
7 0
3 years ago
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