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iVinArrow [24]
2 years ago
9

Evaluate the following expression . 2*[4+(12+16)/7

Mathematics
1 answer:
Nataliya [291]2 years ago
3 0

Answer:

16

Step-by-step explanation:

2 \times (4 + (12 + 16) \div 7  \\ (12 + 16) = 28 \div 7 = 4 + 4 = 8 \\ 2 \times 8 = 16

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(3x+4)–(2x+9)=15<br><br> Help meeeeeeeeeeeee.
melamori03 [73]

Answer:

x=30

Step-by-step explanation:

you distribute the negative to 2x and 19

3x+4-2x-19=15

then you combine like terms

x-15=15

you add 15 to both sides

x=30

4 0
3 years ago
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Need help with the question in the picture learned awhile ago and forget!
xxTIMURxx [149]

Answer:

-i

Step-by-step explanation:

i^15

Divide the exponent by 4

15/4 = 3 r 3

Take the remainder and use as the exponent

i^3

 We know that i^2 = -1  

i^3 = i^2 *i

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7 0
3 years ago
A theater can seat 170 people. The number of rows is 7 less than the number of seats in each row. How many rows of seats are the
maks197457 [2]
Answer:number of rows =10
number of places in row = 17

Step-by-step explanation:
number of rows =N
number of places in row = N+7
N(N+7)=170
N^2+7n-170=0
(N+17)(N-10)=0
N1=-17
N2=10
We can`t take negative value for quantity of smth so we throw N1 away
From that number of rows =10
number of places in row = 10+7=17
5 0
2 years ago
Find the slope of the line that passes through the pairs of points ( 7, 4), (-4,5)
lilavasa [31]

Answer:

The slope is 1/-11.

Step-by-step explanation:

Slope (m) =  

ΔY /ΔX =  

1 /-11  = -0.090909090909091

7 0
3 years ago
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vazorg [7]

You factor the numerator and denominator and cancel the common factors. So maybe that should help you

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3 years ago
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