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Rama09 [41]
2 years ago
15

Evaluate (–1)8 + (–1)7 – 16 – 14 – (–1)2. Pay attention to the placement of the parentheses and negative signs. Question 1 optio

ns: A) 5 B) –3 C) –4 D) –23
Mathematics
1 answer:
Inessa05 [86]2 years ago
8 0
Since we are evaluating, we use PEMDAS so we know the order the operations. Follow PEMDAS:

Original Expression: (-1)8+(-1)7-16-14-(-1)2.

Evaluating: -8-7-16-14+2

-8-7=-15-16=-31-14=-45+2=-43.

The answer is -43 according to PEMDAS.
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2x squared + 9x=-5 i need to solve for x
In-s [12.5K]
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3 0
3 years ago
A circle whose center is the origin passes through the point (-5,12). Which point also lies on this circle?
schepotkina [342]
The answer is B(11, 2sqrt(12) )
proof

the main equation of the circle is   (x-x1)²+(y-y1)²=R²
where C(x1, y1) is the center 
so if the center is the origin, it is O(0,0), and the equation becomes
<span>  (x)²+(y)²=R²
</span>and the circle passes through the point (-5,2) so we can write 
(-5)²+12²=R², it implies R= sqrt(25+144)=sqrt(169)=13

and  for <span>B(11, 2sqrt(12) )     </span>11²+  (2sqrt(12))²= 121 + 48= 169= 13
it is checked.
3 0
3 years ago
Which expression represents the combined area of the garden in square feet?
KATRIN_1 [288]
You don’t have any attachment so I’m sorry I cannot answer
8 0
3 years ago
All the info is in the photos your gonna need the answer to the first photo to answer the second one help plz I'm giving Brainli
navik [9.2K]

Answer:

240 minutes (4 hours)

Step-by-step explanation:

the descend 3000 ft every 20 minutes

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Answer:

Step-by-step explanation:

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