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icang [17]
3 years ago
9

23

Mathematics
2 answers:
stepan [7]3 years ago
6 0

Answer:

hfkfufuf jfhjfhJjrjdhdojdjdsjfjfhndjdjfjfhfujfjfhfa

Harrizon [31]3 years ago
3 0

Answer:

$24.22

Step-by-step explanation:

if it's 4 or lower it doesn't change and if it's 5 or higher it changes the number up.

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In a scale drawing of an apartment 1 centimet represents 2 3/4 feet. If the length of the kitchen is 4 1/2cm on the scale drawin
weeeeeb [17]

Answer:

12 3/8 feet

Step-by-step explanation:

Because 4 1/2 times 2 3/4 equals 99/8, then 99 divided by 8 equals 12 3/8.

3 0
3 years ago
Find the number of elements in A1 ∪A2 ∪A3 if there are 100 elements in A1, 1000 in A2, and 10,000 in A3 if a) A1 ⊆ A2 and A2 ⊆ A
Stella [2.4K]

Answer:

Step-by-step explanation:

Given that there are 3 sets such that  there are 100 elements in A1, 1000 in A2, and 10,000 in A3

a) If A1 ⊆ A2 and A2 ⊆ A3

then union will contain the same number of elements as that of A3

i.e. n(A1 ∪A2 ∪A3)=n(A3) =10000

b) If the sets are pairwise disjoint.

union will contain the sum of elements of each set

n(A1 ∪A2 ∪A3) = 100+1000+10000=11100

c) If there are two elements common to each pair of sets and one element in all three sets

We subtract common elements pairwise and add common element in 3

i.e. n(A1 ∪A2 ∪A3) = 100+1000+10000-2-2-2+1\\= 10995

5 0
3 years ago
Solve systems of equations algebraically x+y=6 and 2x+3y=13
HACTEHA [7]
X+y=6 is..... 
solve for x=0... y=6 
solve for y=0... x=6 
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calculate the slope: a= y(x=1)-y(x=0)/1=-1 
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3 years ago
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3 0
3 years ago
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If the r-value, or correlation coefficient, of a data set is 0.926, what is the
n200080 [17]

Answer:

D. 0.857

Step-by-step explanation:

The coefficient of determination, R-squared, is simply the square of the  correlation coefficient;

R-squared = r^2

R-squared = 0.926^2

R-squared = 0.857

Therefore, the coefficient of determination is 0.857.

4 0
4 years ago
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