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Nana76 [90]
3 years ago
11

-3(2x^2+ax+b)=-6x+12x-15 what is the value of a and b

Mathematics
1 answer:
bonufazy [111]3 years ago
5 0
B= -2x+5-2x^2-ax
A= -2x+5-2x^2-b/x 
x=0

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Carlton ran 7 3/4 miles in 52 7/10 minutes. what is his average pace per minute?
SCORPION-xisa [38]

Answer:

  5/34 mi/min

Step-by-step explanation:

To find miles per minute, divide miles by minutes:

  (7 3/4 mi)/(52 7/10 min) = (31/4 mi)/(527/10 min)

  = (31/4)(10/527) mi/min = 310/2108 mi/min = 5/34 mi/min

Carlton's average pace was 5/34 miles per minute.

___

Since the given numbers are mixed numbers, we assume this is supposed to be a problem in fractions. Hence we have given the answer as a fraction. Its decimal value is about 0.14706. It is a repeating decimal with a 16-digit repeat.

You may have to do a little work to reduce the fraction 310/2108 to 5/34. You have to factor out a factor of 62. The numerator is 310=2·5·31, so that gives you a short list of factors to try with the denominator.

5 0
3 years ago
A certain country has 266.76 million acres of forest. Every year, the country loses 3.51 million acres of forest mainly due to d
djverab [1.8K]

Answer:

50 Years

Step-by-step explanation:

175.5 million (The difference) divided by 3.51 million equals 50.

3 0
3 years ago
A robot can complete 8 tasks in 5/6 hour. What is the unit rate for hours per task?
Sonbull [250]
8 tasks in 5-6 hours
so what is 8/6? 
1 hour and 30 minutes


8 0
3 years ago
56+ ? +11=94 <br> Help me
tiny-mole [99]

Answer:

? = 27

Step-by-step explanation:

56 + ? + 11 = 94

? + 67 = 94

? = 27

4 0
3 years ago
If one kilogram weighs about 35 ounces, how many grams are there in 2 ounces (to the nearest gram)?
Ksenya-84 [330]

Answer:

If my math is correct, the answer is about 57.14 grams

Step-by-step explanation:

The fact that one kilogram is about 35 ounces is a conversion factor, so if you use that in the equation, it goes something like this

2 ounces /1  x  1 kg/35 ounces x 1000g/1kg

To make the equation balance out, you need to end in grams, which is what the question asks. To get ounces to cancel, you need to use the conversion factor, 35 ounces on the bottom (since ounces over ounces cancels), then you have kilograms left, which you need to convert to grams. You can do this by using the metric system line, which goes Kilo, Hecta, Deca, The unit, Deci, Centi, and milli, each unit increasing by ten as it goes along. Thus, one kilogram equals 1000 grams. Combining this all together, you get 57.14 grams.

Hope this helps!


4 0
3 years ago
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