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aleksandr82 [10.1K]
2 years ago
8

Evaluate the given algebraic expressions replacing x with -2 and y with 1

" id="TexFormula1" title="3x^{2}" alt="3x^{2}" align="absmiddle" class="latex-formula">
Mathematics
2 answers:
Korvikt [17]2 years ago
8 0
-6 is the answer i believe
Savatey [412]2 years ago
6 0

Answer: -6

Step-by-step explanation: -2^1 = -2

                                              3 x -2 = -6

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The assembly of a machine takes 3/4 hour there are 12 steps in the assembly process what is the average time for each step
S_A_V [24]
We can solve this two different ways. I'll do both, and you choose which one makes the most sense:
We can divide the fraction 3/4 by 12. remember, when we divide fractions, we flip the second fraction and change the sign to multiplication:
3/4 ÷12     [starting equation]
3/4 x 1/12  [flip and change sign]
3/48    [now reduce]
1/16 Each step takes 1/16 of an hour. 
1/16 x 60 = 3 3/4, or 3.75 minutes

Second way:
3/4 of an hour is 3/4 of 60...45 minutes.
Still, we divide out:
45 ÷ 12   [starting equation]
3 9/12    [divide with remainder]
3 3/4 minutes...3.75 minutes

5 0
4 years ago
Scientists found the wreck of the titanic 3797 m below sea level. How many km below sea level is the wreck?
WINSTONCH [101]

We are given that the titanic is found 3,797 m below sea level. This is simply equivalent to 3.797 km or 3.8 km when rounded off to one decimal.

We should take note that the letter k in km means kilo and a kilo is equivalent to 1000. So this means that for 1 km there is exactly 1000 m. So to convert, simply multiply a value with unit m with this conversion factor. Conversion factor = 1 km / 1000 m

Depth of titanic = 3,797 m (1 km / 1000 m)

Depth of titanic = 3.797 km = 3.8 km

4 0
3 years ago
Read 2 more answers
Can someone help me asap!!!
amm1812

Answer:

<em>Negative</em>

Step-by-step explanation:

5 0
2 years ago
1,284 to the nearest 100 place
prisoha [69]

1,300 because 8 is over 5 and it rounds the 100th place ,(which is 2), to become a 3 which makes the answer 1,300.

7 0
3 years ago
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Nitella [24]

$4,350  x 0.02 = $87

$360  - $87 = $273

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so $273 - $270 = $3

6 0
3 years ago
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