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3 years ago

13

Using the order of operations, what should be done first to evaluate (-2)³ + 4 ÷ (-15 + 9)(3) - 4?

2 answers:

dybincka [34]3 years ago

8 0

Answer:

-14

Step-by-step explanation:

If you simplify the expression you get -14

levacccp [35]3 years ago

7 0

Answer:

1) add -15+9

Step-by-step explanation:

PARENTHESES

Exponent

Multiply

or (depends which goes first)

Divide

Add

or (depends which goes first)

Subtract

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Two roller coasters are vying for the title of the steepest drop the first ride has a hill that drops 140 feet in a 40 foot run

muminat

Answer:

They have the same slope

Step-by-step explanation:

Given

Coaster 1:

$Drops = 140ft$

$Run = 40ft$

Coaster 2:

$Drops = 105ft$

$Run = 30ft$

First, we calculate the slope (m) of both coasters

$m = \frac{Rise}{Run}$

$m = \frac{Drops}{Run}$

For coaster 1:

$m = \frac{140ft}{40ft}$

$m = \frac{140}{40}$

$m = 3.5$

For coaster 1:

$m = \frac{105ft}{30ft}$

$m = \frac{105}{30}$

$m = 3.5$

<em></em> $m = m=>3.5 = 3.5$ <em></em>

<em>By comparison, they have the same slope</em>

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Harry is riding a train that goes 70 miles an<br> hour. How far will he travel is 3.5 hours?

alexdok [17]

Answer: 245 miles

Step-by-step explanation:

(70)(3.5)= 245

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