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denis-greek [22]
3 years ago
7

A student had $40 but spent $32. What percentage of his money has he spent?​

Mathematics
2 answers:
WINSTONCH [101]3 years ago
3 0

Answer:

80%

Step-by-step explanation:

$40->100%

$32->x

x=32×100/40

x=80%

Alenkinab [10]3 years ago
3 0

the correct answer is 80%

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What are the sine and cosine ratios for a 30°–60°–90° triangle with a hypotenuse of 6, when θ = 60°?
Margaret [11]

Answer:

There are two ways to do this problem algebraically or trigonometrically.

Algebraically/geometrically

The ratios of the sides of a 30/60/90 tri. are x, x√3, 2x (short leg, long leg, hyp). Therefore, if the long leg is 6 'units'. then 6 = x√3. x = 6√3.

The hyp is 2x then the hypotenuse is 2(6√3) = 12√3, rationalizing is 12√3/3 = 4√3

Using Trig.

We can use sinx = y/r = opp/hyp. The long leg of 6 is opposite 60 degrees (pi/3).

Therefore, sin(pi/3) = 6/r =

r = 6/sin(pi/3) = 6/(√3/2) = 12/√3, when you rationalize you get 12√3/3 = 4√3

4 0
2 years ago
Choose a positive number. Using this number as the base, evaluate it when the exponent is 3, 0, and -2. Show all work.
serious [3.7K]
Step by step explaination:
Positive number = 5
When Exponent is 3, it equals: 125
When exponent is 0, it equals: 1
When exponent is -2, it equals: 1/25 or .04
6 0
3 years ago
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Did I do this equation correctly?​
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Answer:

It looks correct!!!!!!!!!

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3 years ago
1. What is 47% of 268?
mezya [45]

Answer:

125.96

Step-by-step explanation:

47 x 268  divided by 100

= 125.96

6 0
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