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Oksana_A [137]
3 years ago
13

Keith has $400. Andrew has 3/4 as much as Keith. If Andrew gives 15% to Kevin how much does he have

Mathematics
1 answer:
Allisa [31]3 years ago
6 0
Keith = 400. 3/4 of 400 is 300 dollars, so andrew has 300 dollars. 15% of 300 is 45 dollars, so if andrew gave keith 45 dollars, andrew would have 255 dollars left and keith would have 445.
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Arrange the rational numbers −7/10, 5/−8, 2/−3in ascending order.
lilavasa [31]

Answer:

-8 / -7 / -3 / 2 / 5 / 10

Step-by-step explanation:

you have to arrange all the numbers from the smallest number to the greatest number, but in negative, always bigger number are considered small.

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Twice the difference of a number c and forty.​
dybincka [34]

Answer:

Equation ---->    2(c - 40)

c = -40

Step-by-step explanation:

2(c - 40)

= (2c) - (80)

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4 0
3 years ago
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Help on question 30!!
Basile [38]
The given identity tells you ...
.. (sum of numbers) * (sum of squares - product) = (sum of cubes)

Substituting the given information, you have
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3 0
3 years ago
The hypotenuse of a 45°-45°-90° triangle measures 128 cm. A right triangle is shown. The length of the hypotenuse is 128 centime
Aleks [24]

Answer:

64√2 or 64 StartRoot 2 EndRoot

Step-by-step explanation:

A 45-45-90 traingle is a special traingle.  Let's say one of the leg of the triangle is x. The other one is also x because of the isosocles triangle theorem.  Therefore, using the pytagorean theorem, you find that x^2+x^2=c^2.  2(x)^2=c^2.  You then square root both sides and get c= x√2.  

Therefore, the two legs are x and the hypotenuse is x√2.  x√2=128 because the question says that the hypotenuse is 128.  Solve for x by dividing both sides by √2.  X=128/√2.  You rationalize it by multiplying the numberator and denominator of the fraction by √2.  √2*√2= 2.

X=(128√2)/2= 64√2 cm.

Since X is the leg, the answer would be 64√2

3 0
3 years ago
Read 2 more answers
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