3 years ago

Simpli }у thіl expr 10 101 3xx xxxxуху X x X xX x y x y

Mathematics

1 answer:

yulyashka [42]3 years ago

3 0

Answer:

Step-by-step explanation:

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What does a-2+3=-2 equal

shepuryov [24]

$Simplifying~
a + -2 + 3 = -2

Reorder the terms:
-2 + 3 + a = -2

Combine like terms: -2 + 3 = 1
1 + a = -2

Solving
1 + a = -2

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-1' to each side of the equation.
1 + -1 + a = -2 + -1

Combine like terms: 1 + -1 = 0
0 + a = -2 + -1
a = -2 + -1

Combine like terms: -2 + -1 = -3
a = -3

Simplifying
a = -3$

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4 years ago

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Find sum of -3,2,7,12....,132<br> Arithmetic series

jonny [76]

$a_1=-3 \\
d=2-(-3)=5 \\
a_n=132 \\ \\
a_n=a_1+d(n-1) \\
132=-3+5(n-1) \\
132=-3+5n-5 \\
132=-8+5n \\
140=5n \\
n=28 \\ \\
S_n=\frac{n(a_1+a_n)}{2} \\
S_{28}=\frac{28(-3+132)}{2}=\frac{28 \times129}{2}=14 \times 129=1806$

The sum is 1806.

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3 years ago

This table shows the heights of some of the tallest buildings in the United States. Use the table to answer the question.

FromTheMoon [43]

Answer: If they stood end to end they would be 2,489.

Step-by-step explanation: If you add 1,362 and 1,127 it sums up to 2,489.

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Neporo4naja [7]

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If radius of circle = 1, the shaded sector area is calculated by:

A = pi x radius^2 x (136 x 2)/360 = 3.14 x 1^2 x 272/360 =2.37

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3 years ago

Does anybody know the answer to this math question I’m lost

Talja [164]

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x-7

Step-by-step explanation:

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