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Oliga [24]
3 years ago
11

Someone pls help, what is the correct answer??!?.?

Mathematics
1 answer:
aleksandrvk [35]3 years ago
6 0

Answer:

b

Step-by-step explanation:

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41 coins, consisting of nickels and quarters, have a total value of $4.65. How many coins of each kind are there?
aivan3 [116]

You first have to make an simple equation.

x = How many pennies

y = How many quarters

After that, since a penny is 5 Cents and a quarter is 25 Cents, we make the equation as:

5x + 25y = 465 (cents)

To write the whole entire thing in an equation is:

x + y = 41

y = 41 - x    Since I brought the x from the left to right, we change the positive "x" to negative "y"

To bring the 'y = 41 - x' to 5x + 25y = 465, we get rid of the "y"s from both equations.

Now, you are left with the simplified equation:

5x+25(41-x)=465\\

25*41+5x-20x=465

-20x+25*41=465

-20x=465-(25*41)

-20x=465-1025

-20x=-560

20x=560

x=28

Now you find the y.

x = 28

28+y=41\\41-28=y\\y=13

Conclude:

So the y was the quarter and the x was the pennies.

Quarters = 13

Pennies = 28

5 0
3 years ago
Can someone help me please
Natasha_Volkova [10]
If you were to compress a function vertically by a factor of n, f(x) would change to 1/n * f(x). Thus, choice C is the correct answer.
3 0
3 years ago
What is an equation of the line that passes through the points (-3,-1) and<br> (-4, –4)?
olga55 [171]

Answer:

y = 3x + 8

Step-by-step explanation:

6 0
3 years ago
Determine the equation of a line that passes through A(2,5) and is parallel to the line defined by 3x−y+12=0. State the equation
Ksju [112]

Answer:

y = 3x - 1

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Given

3x - y + 12 = 0 ( subtract 3x + 12 from both sides )

- y = - 3x - 12 ( multiply through by - 1 )

y = 3x + 12 ← in slope- intercept form

with slope m = 3

Parallel lines have equal slopes , thus

y = 3x + c ← is the partial equation

To find c substitute (2, 5) into the partial equation

5 = 6 + c ⇒ c = 5 - 6 = - 1

y = 3x - 1 ← equation of parallel line

6 0
3 years ago
A proper unbiased coin was tossed 10 times for 3 trials, giving TTHHTHTTHH, TTTTTHHHHH, and THTHHHTTH (T = Tails; H = Heads). Wh
nadya68 [22]
Theoretical probability is what, theoretically, the probability <em>should </em>be, regardless of data. Because there are only two options, the probability for getting heads on each toss should be 50%. For the total thirty tosses, theoretically, the coin <em>should</em> land on heads fifteen times, or five per trial, which is determined solely on the number of options.

Experimental probability is what the probability was based on the given data. In the first trial, head was scored 5 times, or 5/10, or 50%. This was repeated in the second and third trials. So, based purely <em>on the data,</em> the probability of the coin landing on heads was also 50%.

I hope this helps!
~Chrys

5 0
3 years ago
Read 2 more answers
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