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34kurt
3 years ago
11

Find the difference 12-20.5

Mathematics
2 answers:
myrzilka [38]3 years ago
7 0
The difference is 8.5
choli [55]3 years ago
4 0

The answer is -8.5. Hope this helps!

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To which set does -1/2 belong? A whole numbers only B rational numbers only
Jlenok [28]

Answer:

B

Step-by-step explanation:

Because -1/2 is not a whole number so b is the only answer left

8 0
3 years ago
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A map uses a scale of 0.5 cm = 75 km<br> 50 km=__cm<br> 280 km =__cm<br> 142.5 km=__cm
SpyIntel [72]

Answer:

50km = 0.33cm

280km = 1.87cm

142.5km = 0.95cm

Step-by-step explanation:

Ratio is 0.5/75 = 1/150 cm per km

5 0
3 years ago
In order to prove △ABC ≅ △DBC by SAS, what additional information must be given?
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Why did 6 run away from 7
raketka [301]

Answer: Because 7 8 9

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4 0
3 years ago
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Question 3, help please!
White raven [17]

The answer is not defined.

Explanation:

The given matrix is $\left[\begin{array}{cc}{2} & {4} \\ {1} & {-6}\end{array}\right]+\left[\begin{array}{c}{1} \\ {0}\end{array}\right]$

The matrix $\left[\begin{array}{cc}{2} & {4} \\ {1} & {-6}\end{array}\right]$ has dimensions 2\times 2

This means that the matrix has 2 rows and 2 columns.

Also, the matrix $\left[\begin{array}{l}{1} \\ {0}\end{array}\right]$ has dimensions 2\times1

This means that the matrix has 2 rows and 1 column.

Since, the matrices can be added only if they have the same dimensions.

In other words, to add the matrices, the two matrices must have the same number of rows and same number of columns.

Since, the dimensions of the two matrices are not equal, the addition of these two matrices is not possible.

Hence, the addition of these two matrices is not defined.

4 0
3 years ago
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