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Thepotemich [5.8K]
2 years ago
8

What value is equivalent to -30-2^3*3​

Mathematics
2 answers:
zepelin [54]2 years ago
8 0

Answer:

-6

Step-by-step explanation:

-2 ^3x3 = 24

-30 + 24 = -6

AfilCa [17]2 years ago
5 0

- 30 - 2³ × 3

= - 30 - 8 × 3

= - 30 - 24

= - 54

Follow the order of PEMDAS.

P =》Parenthesis

E =》Exponents

M =》Multiplication

D =》Division

A =》Addition

S =》Subtraction

____

Hope it helps ⚜

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Jestina has A apples, she gave 5 to her sister, enter an expression to represent the number of apples jestina has now!! (show wo
AnnZ [28]

Answer: A-5

Step-by-step explanation:

Jestina has A apples

she gave 5 away

so she has 5 fewer apples than she had before

so A-5 is the amount of apples she has now

3 0
3 years ago
Solve for x: <br><br> -2x + 9 = -4x + 27
Setler79 [48]

X would equal 9

Put like terms together

Subtract

Divide both sides

Then you get your answer

5 0
3 years ago
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Find the indicated nth partial sum of the arithmetic sequence.<br> −7, −3, 1, 5, . . ., n = 30
TiliK225 [7]

Step-by-step explanation:

Given the Arithmetic sequence

-7, -3, 1, 5, . . .

An arithmetic sequence has a constant difference d and is defined by

a_n=a_1+\left(n-1\right)d

\mathrm{Compute\:the\:differences\:of\:all\:the\:adjacent\:terms}:\quad \:d=a_{n+1}-a_n

-3-\left(-7\right)=4,\:\quad \:1-\left(-3\right)=4

\mathrm{The\:difference\:between\:all\:of\:the\:adjacent\:terms\:is\:the\:same\:and\:equal\:to}

d=4

\mathrm{The\:first\:element\:of\:the\:sequence\:is}

a_1=-7

as

a_n=a_1+\left(n-1\right)d

\mathrm{Therefore,\:the\:}n\mathrm{th\:term\:is\:computed\:by}\:

a_n=4\left(n-1\right)-7           ∵ d=4

\mathrm{Arithmetic\:sequence\:sum\:formula:}

n\left(a_1+\frac{d\left(n-1\right)}{2}\right)

\mathrm{Plug\:in\:the\:values:}

n=30,\:\space a_1=-7,\:\spaced=4

=30\left(-7+\frac{4\left(30-1\right)}{2}\right)

=30\left(58-7\right)     ∵  \frac{4\left(30-1\right)}{2}=58

=30\cdot \:51

=1530           ∵  \mathrm{Multiply\:the\:numbers:}\:30\cdot \:51=1530

Therefore, the indicated nth partial sum of the arithmetic sequence is 1530.

ANOTHER METHOD

as

a_n=4\left(n-1\right)-7

n = 30

\sum _{n=1}^{30}\:4\left(n-1\right)-7

=\sum _{n=1}^{30}4n-11

\mathrm{Apply\:the\:Sum\:Rule}:\quad \sum a_n+b_n=\sum a_n+\sum b_n

=\sum _{n=1}^{30}4n-\sum _{n=1}^{30}11

as

\sum _{n=1}^{30}4n=1860

and

\sum _{n=1}^{30}11=330

so

=1860-330

=1530

7 0
4 years ago
A zoo train ride costs $4 per adult and $1 per child. On a certain day, the total number of adults (a) and children (c) who took
lilavasa [31]
Its all about process of elimination. Answer C
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3 years ago
The weight of 6 eggs is shown. Identify the constant of proportionality of total weight to number of
Georgia [21]

Answer:

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Step-by-step explanation:

<u>Proportional relationship:</u>

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<u>Given:</u>

  • x = 6,
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<u>Find k:</u>

  • 246 = 6k
  • k = 246/6
  • k = 41

5 0
3 years ago
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