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Lynna [10]
3 years ago
7

Choose a number from 101 to 110 write it draw a picture to show it as 10 tens and more.

Mathematics
1 answer:
MrMuchimi3 years ago
4 0
You would do ten columns of ten and then you would just do the remaining.
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What is the solution to the system? 1. x-y + 2 z = -7<br> 2. y + z =1<br> 3. x-2 y - 3 z = 0
kvv77 [185]

You'd find this problem easier to understand and do if you'd please list the defining equations vertically and line up variables:

1. x - 1y + 2 z = -7

2. y + 1z = 1

3. x - 2 y - 3 z = 0 Now eliminate the line numbers:

x - 1y + 2 z = -7

1y + 1 z = 1

x - 2 y - 3 z = 0

Let's use the elimination method to eliminate variable z: Seeing that z = 1 - y, we transform the first equation into 1x - 1y + 2(1-y) = -7

and the third into x - 2y - 3(1-y) = 0.

Simplifying 1x - 1y + 2(1-y) = -7

and x - 2y - 3(1-y) = 0,

we get

1x - 2y - 3 + 3y) = 0 and 1x - 1y + 2 - 2y = -7

which in turn simplify to

1x + y = 3 and 1x - 3y = -9

Having eliminated the variable z, we now focus on eliminating x. Mult. the 1st equation by -1, obtaining -1x - 1y = -3. Add this result to 1x - 3y = -9:

0 - 4y = -12, which tells us that y = 3. Subbing 3 for y in 1x + 1y = 3 tells us that x = 0.

All we have left to determine is the vaue of z.

Borrowing Equation 3, from above, we get x - 2 y - 3 z = 0, and into this equation we substitute x = 0 and y = 3: 0 -2(3) - 3z = 0.

Thus, -3z = 6, and z = -2.

The solution set is (0, 3, -2). You should check this by substitution.

3 0
3 years ago
A custodian plans to repaint some classroom bookcases. She has 5 1/4 gallons of paint.
just olya [345]

Answer:

21/4 :3/4=  21/4 *4/3= 7/1 *1/1 = 7

7 bookcases

Step-by-step explanation:

6 0
3 years ago
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Find equivalent fraction with a common denominator and order from least to greatest
nika2105 [10]
The fractions would be in order-
3/10, 1/2, 4/5
Because if you change each fraction to a denominator of 10, the numbers will be 3/10, 5/10, and 8/10
6 0
3 years ago
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Please help!! Tell whether the lines for the pair of equations are parallel, perpendicular, or neither.
PilotLPTM [1.2K]
I got parallel
tell me if i get it right
6 0
3 years ago
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(05.03 MC)What is the area, in square units, of the polygon shown here?
djverab [1.8K]

To resolve the proposed issue, an explanation is needed in which the subject is addressed

5 0
3 years ago
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