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Alona [7]
3 years ago
13

Erin wrote 5 checks for $35 each. What was the change in her checking account balance after writing these checks?

Mathematics
1 answer:
Neko [114]3 years ago
7 0
$7.00. Because 5 divided by $35 equals $7.00.


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Solve the system of equations.
guajiro [1.7K]

Answer:

Option 2: (1, 0) and (0, -5)

Step-by-step explanation:

Let's solve this system of equations using the elimination method.

Start by labelling the two equations.

5x -y= 5 -----(1)

5x² -y= 5 -----(2)

(2) -(1):

5x² -y -(5x -y)= 5 -5

Expand:

5x² -y -5x +y= 0

5x² -5x= 0

Factorise:

5x(x -1)= 0

5x= 0 or x -1= 0

x= 0 or x= 1

Now that we have found the x values, we can substitute them into either equations to solve for y.

Substitute into (1):

5(0) -y= 5 or 5(1) -y= 5

0 -y= 5 or -y= 5 -5

y= -5 or -y= 0

y= 0

Thus, the solutions are (0, -5) and (1, 0).

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2 years ago
Simplify the answer (3 to the 4th power and (3 to the negative 6th power)​
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3^4 and 3^-6
multiply, add, subtract?
8 0
3 years ago
Does anyone know how to do dis i need help
Darya [45]

Answer:

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Step-by-step explanation:

7 0
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Read 2 more answers
Solve for x and y 9/x-4/y=8
borishaifa [10]
You can solve <span>9/x-4/y=8 for x or for y but NOT at the same time.

Solving for x:  </span><span>9/x-4/y=8       Mult all 3 terms by xy to eliminate the fractions.

9(xy)/x - 4xy/y = 8xy         =>       9y - 4x = 8xy, or 9y = 4x + 8xy = 4x(1+2y)

                                                                        then 9y = x [ 4(1+2y) ]
                                                                                     9y
                                                            therefore x = ------------
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Solve for y using a similar approach.

</span>
7 0
3 years ago
Write a problem involving how much more Than and solve it. Explain how drawing a diagram helped you solve the problem
avanturin [10]
A very simple example problem to satisfy the required above is,
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To answer this item, one needs to subtract the number of apples from the number of oranges. This is as shown below,
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The concept of "how much more than" is linked to finding the difference between the numbers. 
6 0
3 years ago
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