The tail of a Boeing 747 is 63 feet 8 inches tall. how many inches tall is the tail?

1 answer:

7 0

764 in. 

Here's why: 
There are 12 inches in a foot.
12*63=756
Don't forget to add the extra 8 inches!
756+8=764

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Brian can lay a slab of concrete in 6 hours, while Greg can do it in 4 hours. If Brian and Greg work together, how long will it

anastassius [24]

Answer:

2 2/5 hours

Step-by-step explanation:

In 6 hours Brian can lay 1 slab of concrete

dividing both side by 6

in 6/6 hours Brian can lay 1/6 slab of concrete

Thus, in 1 hour Brian can lay 1/6 slab of concrete

In 4 hours Greg can lay 1 slab of concrete

dividing both side by 4

in 4/4 hours Greg can lay 1/4 slab of concrete

Thus, in 1 hour Greg can lay 1/4 slab of concrete

Thus, total part of slab laid by both in 1 hour when they work together

1/6 + 1/4 = 4+6/(6*4) = 10/24 = 5/12

5/12 of slab of concrete is laid by both of them in 1 hour

time taken to lay 5/12 of slab = 1 hour

dividing both side by 5/12

time taken to 5/12/ 5/12 of slab = 1/5/12 hour = 12/5 hours

time taken to 1/1 of slab = 12/5 hours = 2 2/5 hours

Thus,

it takes 2 2/5 hours to lay the full slab of concrete when Brian and Greg work together,

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Help Math All the Points i have

d1i1m1o1n [39]

Hey there!
We'll be writing them in slope-intercept form. Slope intercept form is defined as:
y = mx + b
With m being the slope and b as the y-intercept. Now, we can just plug them in.

1)
y = -3x - 2
Slope = -3
Y intercept = -2

2) y = 5x + 7
Slope = 5
Y intercept = 7

3) y = -3/4x + 3
Slope = -3/4
Y intercept = 3

4) y = 5/2x - 6
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Slope = -5/2

Hope this helps!

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