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stealth61 [152]
3 years ago
10

there are $3.90 worth of nickles and quarters in a piggy bank. there are 6 more quarters than nickels. how many coins are in the

piggy bank
Mathematics
1 answer:
Murrr4er [49]3 years ago
4 0

Answer:

8 nickels and 14 quarters

Step-by-step explanation:

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Let x represent the measurment of an acute angle in degrees. the ratio of the complement of x to the supplement of x is 2: 5. gu
Nadusha1986 [10]
Ratio of complement of x : supplement of x 
2 : 5
⇒ 2 times the supplement of x will be equal to 5 times the complement of x

5(90 - x) = 2 (180 - x)
450 - 5x = 360 - 2x
5x - 2x = 450 - 360
3x = 90
x = 30°

Complement of x = 90 - x = 90 - 30 = 60
Supplement of x = 180 - x = 180 - 30 = 150
Ratio:
60 : 150
60 ÷ 30 : 150 ÷ 30
2 : 5 (checked)
4 0
3 years ago
Find 3 fractions that are equivalent to 3/8. explain your method
Nikolay [14]
Hey Aarya!

If we `scale` both the numerator and denominator by the same value, then we can create other equivalent fractions. By scale I mean: Multiply both the top and bottom of the fraction by the same value.

So here is one we can try.
Let's multiply numerator and denominator by 3.
\rm \frac38\cdot\frac33=\frac9{24}
Yay we did it! We found another fraction which is equivalent to 3/8.
5 0
3 years ago
^ { (5x ^ { 3 } -7x ^ { 2 } +3x-4)-(8x ^ { 3 } +2x ^ { 2 } +3x-7) }
Tomtit [17]

Answer:

-3x^{3} -9x^2+3

Step-by-step explanation:

Given

(5x^{3} -7x^{2} +3x-4)-(8x ^ { 3 } +2x ^ { 2 } +3x-7) }

Required

Simplify

(5x^{3} -7x^{2} +3x-4)-(8x ^ { 3 } +2x ^ { 2 } +3x-7) }

Open brackets

5x^{3} -7x^{2} +3x-4-8x^3 -2x^2 -3x+7

Collect Like Terms

-8x^3+5x^{3} -7x^{2} -2x^2+3x -3x-4+7

Simplify like terms

-3x^{3} -9x^2+3

6 0
2 years ago
Question 1
Oliga [24]
Where are the choices
6 0
3 years ago
Check all that apply. is the reference angle for:
3241004551 [841]

Answer:

B. C. and D.

Step-by-step explanation:

4 0
3 years ago
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