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Marina86 [1]
3 years ago
6

Explain how you used mental math

Mathematics
2 answers:
andriy [413]3 years ago
4 0
Addition, I would use the principles of addition. 
DIA [1.3K]3 years ago
4 0
Addition is the correct answer
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If x=-1\3 is a zero of a polynomial p(x)=27xcube -axsquare -x+3 then find the value of a
antoniya [11.8K]

Answer:

a = 21

Step-by-step explanation:

If x = h is a zero of a polynomial then f(h) = 0, thus

p(- \frac{1}{3} ) = 27( - \frac{1}{3} )³ - a(- \frac{1}{3} ) - (- \frac{1}{3} ) + 3 = 0, that is

27 (- \frac{1}{27} ) - \frac{1}{9} a + \frac{1}{3} + 3 = 0

- 1 - \frac{1}{9} a + \frac{10}{3} = 0 ( multiply through by 9 to clear the fractions )

- 9 - a + 30 = 0

- a + 21 = 0 ( subtract 21 from both sides )

- a = - 21 ( multiply both sides by - 1 )

a = 21

5 0
3 years ago
The time to fly between new york city and chicago is uniformly distributed with a minimum of 120 minutes and a maximum of 150 mi
Paul [167]
120+150=270
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3 years ago
Quadrilateral ABCD has vertices at A(-3, 3), B(0, 4), C(3, 3),and D(0,2). What word below best describes this quadrilateral?
BaLLatris [955]

9514 1404 393

Answer:

  D)  Rhombus

Step-by-step explanation:

The figure is a parallelogram with equal-length sides, so is a rhombus.

8 0
3 years ago
What’s bigger -4 4/25 or -4.16
Rina8888 [55]

Answer:

they are equal

Step-by-step explanation:

6 0
3 years ago
Ok pls help this needs to be answered fast
horrorfan [7]

Answer:

the oeange will be there for u

Step-by-step explanation:

1 then 4 then 3 then 6 then 2

8 0
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