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taurus [48]
3 years ago
14

Plssss help and really quick!!!!!!!

Mathematics
2 answers:
Colt1911 [192]3 years ago
7 0
Hello can I get a owa owa and the answer is 20
spin [16.1K]3 years ago
5 0
(5•x)-20=60+x
5x-20=60+x
4x=80
x=20
I’m a bit confused on the setup but I think this is the right one. Hope it helped! Please give brainliest if it did! Thanks
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Marty made a $220 bank deposit using $10 bills and $5 bills. She gave the teller a total of 38 bills, how many $5 bills were in
Luda [366]

ANSWER: 32 five-dollar bills

======

EXPLANATION:

Let x be number of $5 bills

Let y be number of $10 bills

Since we have total of 38 bills, we must have the sum of x and y be 38

x + y = 38 (I)

Since the total amount deposited is $220, we must have the sum of 5x and 10y be 220 (x and y are just the "number of" their respective bills, so we multiply them by their value to get the total value):

5x + 10y = 220 (II)

System of equations:

\left\{ \begin{aligned} x + y &= 38 && \text{(I)} \\ 5x + 10y &= 220 && \text{(II)} \end{aligned} \right.

Divide both sides of equation (II) by 5 so our numbers become smaller

\left\{ \begin{aligned} x + y &= 38 && \text{(I)} \\ x + 2y &= 44 && \text{(II)} \end{aligned} \right.

Rearrange (I) to solve for y so that we can substitute into (II)

\begin{aligned} x + y &= 38 && \text{(I)} \\ y &= 38 - x \end{aligned}

Substituting this into equation (II) for the y:

\begin{aligned} x + 2y &= 44 && \text{(II)} \\ x + 2(38 - x) &= 44\\ x + 76 - 2x &= 44 \\ -x &= -32 \\ x &= 32 \end{aligned}

We have 32 five-dollar bills

======

If we want to finish off the question, use y = 38 - x to figure out number of $10 bills

y = 38 - 32 = 6

32 five-dollar bills and 6 ten-dollar bills

7 0
3 years ago
Put these number in order from least to greatest 6/40 11/20 -7/25 6
egoroff_w [7]

Answer:

-7/25, 6/40, 11/20, 6

Step-by-step explanation:

4 0
3 years ago
A line passes through (−1, 5) and (1, 3)
ikadub [295]
I hope this helps you

8 0
3 years ago
A hiker begins a trip by first walking 22.2 km
Dominik [7]

9514 1404 393

Answer:

  20.6 km

Step-by-step explanation:

Using (East, North) coordinates, the hiker's position ends up being ...

  22.2(cos(-45°), sin(-45°)) +40.1(cos(65°), sin(65°))

We're only interested in the second coordinate of this total, which is ...

  22.2sin(-45°) +40.1sin(65°) ≈ -15.698 +36.343 = 20.645 . . . km

The y-component of the hiker's position at the end of the second day is 20.6 km north of her starting location.

4 0
3 years ago
Write the point-slope form of an equation for the line passing through the point (3, -2) with slope 4.
satela [25.4K]
Equation of a line is given by y - y1 = m(x - x1); where m is the slope.
y - (-2) = 4(x - 3)
y + 2 = 4(x - 3)
6 0
3 years ago
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