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melamori03 [73]
2 years ago
8

Select the equivalent expression. 2^-4 = ?​

Mathematics
1 answer:
mrs_skeptik [129]2 years ago
7 0

Answer:

1/16

Step-by-step explanation:

This means 1/2x2x2x2  = 1/16

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A boat traveled 280 miles downstream and back. The trip downstream took 7 hours. The trip back took 14 hours. Find the speed of
Brrunno [24]
Let, the speed of boat = x 
Speed of current = y
So, x + y = 280/7
x + y = 40   ---- first equation

x - y = 280/14 
x - y = 20  
x = 20 + y

Substitute this value of x in first equation, 
20 + y + y = 40
2y = 40 - 20
y = 20/2
y = 10

Substitute this in first equation, 
x + 10 = 40
x = 30

In short, Speed of Boat = 30 mph, & speed of current = 10 mph

Hope this helps!
5 0
3 years ago
What is the answer to 2/3 ( c-18)= 7, please show the steps
Roman55 [17]

(2/3)*(c-18)=7 <em>(Multiply terms on both sides of equation by 3)</em>

2(c-18)=21

2c-36=21

2c=57

c=57/2

c=28.5

4 0
3 years ago
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Is 250yd bigger than 800ft​
AnnyKZ [126]

Answer:

duh yes it is

Step-by-step explanation:

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8 0
3 years ago
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Which equation is represented by the table
seraphim [82]

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C

Step-by-step explanation:


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What is the circumstance of the circle below in terms of pi?
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Circumference of a circle=2pi*r

2*(2.2)*π=4.4π




4 0
3 years ago
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