Dustin has only nickels and quarters in his piggy bank. He has 49 coins total for a combined value of $8.85. How many of each does he have . SHow your work

Answers

Answer 1
Answer: x-\ nickels\ny-\ quarters\n\n0,05x+0,25y=8,85\nx+y=49\ \ \ \ x=49-y\n\n\0,05(49-y)+0,25y=8,85\n2,45-0,05y+0,25y=8,85\n0,2y+2,45=8,85\ \ \ | subtract\ 2,45\n0,2y=6,4\ \ \ | divide\ by\ 0,2\ny=32\n\nx=49-32=17\n\nHe\ had\ 17\ nickels\ and\ 32\ quarters.

Related Questions

What is the percent of increase from 3.7 to 5?Round your answer to the nearest tenth of a percent and include a percent sign (%).
The greatest common factor of 3m^2n+12mn^2 is
Evaluate the expresson when n=8 The product of one fourth and a number increased by 3
Find the LCM of 8 and 16.
Two consecutive positive integers form part of a Pythagorean triple. Always, never, or sometimes?

A. The number of favorable outcome plus the total number of outcomes B. The total number of outcomes minus the number of favorable outcomes
C. The number of favorable outcomes
D. The total number of outcomes

Answers

5/10 of the possible outcomes will be odd, this means that the other 5/10 of the outcomes will not be odd. The denominator is 10 which is the total number of possible outcomes.

The answer is D because the denominator is the total number of outcomes.

Choose all statements true!A. 7 qt and 4 cups > 34 cups
B. 20 fl oz > 3 cups
C. 70 pints = 35 quarts
D. 5 gallon < 21 quarts
E. 47 pt < 6 gallons

Please help me and my brother please! <3

Answers

Answer:

C. 70 pints = 35 quarts

D. 5 gallons < 21 quarts

E. 47pt < 6 gallons

Step-by-step explanation:

There is 35 quarts in 70 pints, therefore being equal to it

There are 20 quarts in 5 gallons so 21 quarts is greater

6 gallons has 48 pints so it's more than 47 pints

Which of the following values "completes the square," or creates a perfect square trinomial, for x2 − 8x + ___?8
16
–8
–16

Answers

Perfect\ square:\ (x\pm y)^2=x^2\pm2xy+y^2\ntherefore\nx^2-OK\n-8x=-2\cdot x\cdot 4\n4^2=16\n\nconclusion\n\nx^2-8x+\boxed{?}=x^2-2\cdot x\cdot4+\boxed{4^2}=x^2-8x+16\n\nYour\ answer:\boxed{\boxed{16}}

Answer: 16

Step-by-step explanation: A more simple approach is realizing that the blocks show 8 x tiles and 1 x^2 tile. The 8 x tiles are on either side of the x^2 tile which is 4 x tiles on each side. So as we can see we can multiply each side together. 4x4 = 16. So that is how you get 16 without having to work it out.

The inverse of a function is a set of ordered-pair numbers in which the range set is interchanged with the domain set. a. True
b. False

Answers

true, because it is reflected across the y=x line

Answer:

True

Step-by-step explanation:

How would you find the value of x is x equals five, in the equation...5x+29=45?

Answers

5x+29 = 45
5x = 16 (subtract 29 from both sides)
x = 16/5.

That is the answer, I don't know where you got the value of 5 but it doesn't make sense. To prove it, let's try put it into the equation:

5x5 + 29 =45
25 + 29 = 45
Wrong! 25 + 29 = 54.

Multiply (4 + i)(1 − 5i). 9 − 19i
−1 − 19i
4 − 5i2
4 − 19i − 5i2

Answers

(4 + i)(1 - 5i)

First, expand to get rid of parentheses.
4 - 20i + i + 5
Second, gather the like terms which contain the same variables. 
(4+5) + (-20i + i)
Third, add 4 + 5.
9 + (-20i + i)
Fourth, subtract -20i + i.
9 - 19i

Answer: 9 - 19i

Answer:

OTHER PERSON IS CORRECT ITS 9 - 19i

I would give an explanation but they said it!!

Xoxo