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Nuetrik [128]
3 years ago
10

Simplify the expression. -4 + 6 • (-1) A. -10 B. -2 C. 2 D. 10

Mathematics
1 answer:
viva [34]3 years ago
8 0

Answer:

- 10

Step-by-step explanation:

Order of operations:  PEMDAS

Multiply first then add

-4 + -6 = -10

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The average distance of the sun from Earth is about 1.5 x 108 kilometers.
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Answer:

10⁵ billion

Step-by-step explanation:

given that distance from sun to earth

= 1.5 x 10⁸ km    (we need to convert this to millimeters)

= 1.5 x 10⁸ km x  1 million mm per km

= 1.5 x 10⁸ km x  1,000,000 mm/km

= 1.5 x 10⁸ km x  10⁶ mm/km

= 1.5 x 10⁸ x  10⁶

= 1.5 x 10⁽⁸ ⁺ ⁶⁾

= 1.5 x 10¹⁴ mm

also given that a quarter is 1.5mm thick, hence the number of quarters that will span the distance between the sun an earth (i.e 1.5 x 10¹⁴ mm)

= 1.5 x 10¹⁴ mm ÷ 1.5 mm/quarter

= 10¹⁴

= 100,000,000,000,000    (remember that a billion has 9 zeros)

= 100,000 billion

= 10⁵ billion

7 0
3 years ago
The number of hours per week that the television is turned on is determined for each family in a sample. The mean of the data is
lesantik [10]

Answer: hiiii

Step-by-step explanation:

4 0
2 years ago
What is the distance between points P(7, -2) and Q(-5, -1)?
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<span>d= 
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8 0
3 years ago
What is the discriminant of 3x^2+6x=2
IgorC [24]
ax^2+bx+c=0\\\\the\ discriminant:\Delta=b^2-4ac\\============================\\\\3x^2+6x=2\ \ \ \  \ |subtract\ 2\ from\ both\ sides\\\\3x^2+6x-2=0\\\\a=3;\ b=6;\ c=-2\\\\\Delta=6^2-4\cdot3\cdot(-2)=36+24=\boxed{60}\leftarrow answer
7 0
3 years ago
Find the coordinates of each point ( I, J, K) after the given transformation.
Andrews [41]

Answer:

Your answer would be I= (2,-1) J= (2,-3) and K= (5,-2)

Step-by-step explanation:

By reversing the coordinates across the x-axis, you will reverse the y coordinate (ex. 4,1 will become 4,-1). If you reverse the coordinates across the y-axis, you will reverse the x coordinate.

6 0
3 years ago
Read 2 more answers
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