Calculate the sum of the first 30 terms in the sequence that begins with 70,65,60

1 answer:

4 0

$\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\la\la\la\la\ddddddddddddddddddddddddddddddddcleverdddddd\ffffffffffffffffffffffffffffffffffffffff\pppppppppppppppppppppppppppppppppppp\ddddddddddddddddddd \displaystyle \Large \boldsymbol{} a_1=70 \ ; \ d=-5 \\\\S_n=\frac{a_1+a_n}{2} \cdot n \ ; \ a_n=a_1+(n-1)d \Longrightarrow \\\\\\ S_{30}=\frac{70+70-29\cdot5}{2} \cdot 30 =-75 \\\\\\Answer: S_{30}=-75$

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zheka24 [161]

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3 years ago

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lions [1.4K]

Step 1: Simplify both sides of the equation.
37
=
−
3
+
5
(
x
+
6
)
37
=
−
3
+
(
5
)
(
x
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+
(
5
)
(
6
)
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=
(
5
x
)
+
(
−
3
+
30
)
(Combine Like Terms)
37
=
5
x
+
27
37
=
5
x
+
27
Step 2: Flip the equation.
5
x
+
27
=
37
Step 3: Subtract 27 from both sides.
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x
+
27
−
27
=
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−
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Step 4: Divide both sides by 5.
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8 0

3 years ago

How do you divide 12.92 by 3.4

Aleks04 [339]

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7 0

3 years ago

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lubasha [3.4K]

Answer:

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Step-by-step explanation:

You can divide or you can mulitpaly

like count by 3s six time

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3 0

2 years ago

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Ronch [10]

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We now look for the amount of watermelons that people ate.
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$
Therefore, the amount of watermelon remaining is:
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We note that the amount of watermelon remaining is equal to 8.5 pounds.
Answer:
the amount of leftover watermelon is: equal to 8.5 pounds

7 0

3 years ago

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