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Sphinxa [80]
3 years ago
5

William says that 15 years from now, his age will be 3 times his age 5 years ago. if x represents William's present age, what eq

uation represents his claim? What is Willaim's current age?
Mathematics
1 answer:
myrzilka [38]3 years ago
8 0

Answer:

x + 15 = 3 (x - 5)

William’s current age: 15. Years old

Step-by-step explanation:

x + 15 = 3(x-5)

x + 15 = 3x - 15

15 + 15 = 3x - x

30 = 2x

x = 15

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The floor of a room is being covered with tile. An area one half
tangare [24]

Answer:

Only the floor area \frac{3}{8} has been covered

Step-by-step explanation:

Assuming that the floor of the room is rectangular, then its area is equal to the product of its length times its width.

A = lw

Let's now call A 'the area that was covered with tiles.

We know that half the length was covered, then:

l' = \frac{1}{2}l

w' = \frac{3}{4}w

So:

A' = \frac{1}{2}l(\frac{3}{4}w)

A' = \frac{3}{8}lw

Finally:

A' = \frac{3}{8}A


4 0
3 years ago
What percentage of 5/2 hours is 15 minutes?​
elena-14-01-66 [18.8K]

Answer:

10 %

Step-by-step explanation:

15 mn = 1/4 h

We have :

\frac{\frac{1}{4} }{\frac{5}{2} } =\frac{1}{4} \times \frac{2}{5} =\frac{2}{20} =\frac{1}{10}=0.1

Then the percentage that 15 mn represents of 5/2 h is :

0.1 × 100 = 10 %

5 0
2 years ago
Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of the function: y=4x^2-8x-3
In-s [12.5K]

D. x= -1; vertex: (-1,-7) 
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3 years ago
Can someone please help me
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$16(4 shirts)= $64
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Jamal's total is $67.20
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3 years ago
Is school worth it?
erik [133]

Answer:

Honestly agreed, i feel like the smaller grades k- 6th grade are useful. where yoh learn to add, multiply, read time and such.

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