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Artyom0805 [142]
2 years ago
10

2 x -1^2 + 1 please show me how to get to the answer of 1

Mathematics
2 answers:
OLga [1]2 years ago
7 0

Answer:

-1

Step-by-step explanation:

2 × (-1²) + 1 = 2 × (-1) + 1 = -2 + 1 = -1

alex41 [277]2 years ago
3 0

Answer:

The answer is -1.

Step-by-step explanation:

2\left(-1^2\right)+1\\-1^2\\=-1\\=2\left(-1\right)+1\\2\left(-1\right)\\2\left(-1\right)=-2\cdot \:1=-2\\=-2\\=-2+1\\-2+1\\=-1

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To solve -3 = -19 + d/5, what steps would you use?
Phantasy [73]

Answer:

1)Add 19

2)Multiply by 5

Step-by-step explanation:

-3=-19+\frac{d}{5}

Adding 19 to both sides.

-3+19=-19+19+\frac{d}{5}\\\\16=\frac{d}{5}

Multiplying 5 to both sides.

16\times5=\frac{d}{5}\times 5\\80=d\\\\

∴d=80

7 0
3 years ago
Back at it again, no idea what I'm doing. Someone please help and explain ​
tester [92]

<u>Given:</u><u>-</u><u> </u>

  • Height of Cylinder = 21ft.
  • Radius of Cylinder = 7ft.

<u>To </u><u>Find</u><u> </u><u>:</u><u>-</u>

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<u>Solution</u><u> </u><u>:</u><u>-</u><u> </u>

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<u>Putting</u><u> the</u><u> known</u><u> values</u><u> </u><u>,</u><u> </u>

<u>Surface</u><u> Area</u><u> </u><u>=</u><u> </u>2×3.14×7(7+21) ft.²

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2 years ago
A high school holds a charity raffle every year that awards a randomly chosen student a small gift certificate to a local mall.
hichkok12 [17]

Answer:

Neither of the two groups of students is right.

Step-by-step explanation:

If the probability that Jessica will win the raffle this year was  x, the probability that she will win the raffle in subsequent years is x given that the number of students do not change. Since this is a random win, she as likely to win next year as she was this year.

Another way to explain this is to say that the probability of Jessica winning the raffle this year is independent of the probability that she wins the raffle next year.  Suppose event A, is the event that Jessica wins the raffle this year, let event B be the event that she wins the raffle next year, event A and B are independent because the occurrence of event A does not affect the occurrence of event B in any way


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3 years ago
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2 years ago
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The area of a triangle with a base of 12 inches and a height of 3.4 inches is
postnew [5]

Answer:

20.4

Step-by-step explanation:

The area of a triangle is calculated by A= (L x W) / 2, because every tringle is half of a square

12 x 3.4 = 40.8      40.8 / 2 = 20.4

8 0
3 years ago
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