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Reil [10]
3 years ago
12

When is estimating an effective tool

Mathematics
2 answers:
aev [14]3 years ago
6 0
Whaen it says round to the nearest 
kirill [66]3 years ago
3 0
Never It is STUPID!!!!!! 
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Write a polynomial of least degree with rational coefficients, a leading coefficient of 1, and zeros at 3 and sqr root 7. Expand
Tresset [83]

Answer:

(x-3)(x^2-7) = x^3 -3x^2 -7x + 21

just change the sign of the root and put x in front of it, then multiply the factors all together

(x-3)(x-sqr7)(x+sqr7)    roots come in conjugate pairs to eliminate irrational coefficients

(x-sqr7)(x+sqr7) = x^2-7.  similar to (a-b)(a+b) = a^2-b^2

Step-by-step explanation:

6 0
3 years ago
Y=6x-1, y=3x-4 the solution is_____
TEA [102]

Answer:

y= -7 and x= -1

Step-by-step explanation:

To do this, line up the variables so it looks like this...

y-6x=-1

y-3x=-4

The reason why -6x and -3y changes to negative is because that it moved to the other side of the equation.

distribute negative to the bottom equation because the two equations have the same number variable which is y...

y-6x=-1

-y+3x=4

Y cancels out and it will be left with -3x = 3.

X = -1.... plug that in to any of the two equation and you get y = -7.

Hope I helped and have a nice day!!

5 0
2 years ago
An animal shelter provides a bowl with 1.55 liters of water for 5 cats.
Archy [21]

Answer: The answer is 0.8 liters of water.

Step-by-step explanation: Well there are 5 cats and each cat drinks .15 liters per day. .15x5 = .75 liters of water. 1.55 liters - .75 liters = 0.8 liters left.

7 0
2 years ago
You need to fill a football with air to play with it. You know that your pump expels air at speed of 8.2 ft/s. The needle of you
abruzzese [7]
Jjjjjjjjhjjjjhhhhjhhjjjjjhhhhhhh
8 0
3 years ago
You received your monthly bank statement and you are reconciling your account balance using the information below. What is the t
yulyashka [42]

Answer:

it was 345.

Step-by-step explanation:

Balance in your checkbook, $356

Balance on bank statement, $472

Service charge and other fees, $15

Interest earned on the account, $4

Total of outstanding checks, $187

Deposits in transit, $60

4 0
3 years ago
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