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3 years ago

Need help please. I suck at math and these two are hard

Mathematics

1 answer:

Digiron [165]3 years ago

6 0

#11
The steepest slope would be m=5
This is the same as 5/1 so you are going UP 5 units for every one unit movement right.
#12
y=mx+b
The b is where it crosses the y axis. This is -2.
The slope is negative because it FALLS from left to right.
Rise/run is 2/7 so slope is -2/7
y = -2/7x -2

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Find 43 ÷ 6 (as a mixed number).

Aleksandr [31]

Answer:

7 1/6

Step-by-step explanation:

43/6 = 7.167

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3 years ago

Ivan has 6 times as many blue beads as red beads. he has 49 red and blue beads in all. how many blue beads does Ivan have

salantis [7]

Let

x--------> the number of blue beads

y--------> the number of red beads

we know that

$x+y=49$

$x=49-y$ -------> equation $1$

$x=6y$ ------> equation $2$

equate equation $1$ and equation $2$

$49-y=6y\\ 6y+y=49\\ 7y=49\\\\ y=\frac{49}{7} \\ \\ y=7$

find the value of x

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therefore

the answer is

Ivan has $42$ $blue beads$

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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:

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