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3 years ago

What is sum or difference for 2/5 2/3

Mathematics

1 answer:

Kisachek [45]3 years ago

5 0

6/15 + 10/15 = 16/15 = 1 1/15

6/15 - 10/15 = -4/15

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Which of the following shows the best way to set up the product of (2x - 5) and (4 - 3x + 4.)?

masha68 [24]

Answer:

Step-by-step explanation:

It usually works best to use the polynomial with fewer terms as the multiplier. A row of partial products is written for each term of the multiplier, so the fewer terms will result in fewer rows of partial products.

In order to keep like terms together, it is preferable to allocate a separate column of the multiplication tableau to each power of the operands or product. This means we want to make note of the fact that the cubic multiplicand has a coefficient of 0 for its x^2 term.

The best setup is the one shown in the attachment.

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2 years ago

Find the inverse for each relation: 1. {(1,-2), (2, 3),(3, -3),(4, 2)}

andrey2020 [161]

Answer:

the inverse for each relation:

1. {(1,-2), (2, 3),(3, -3),(4, 2)} is

{(-2,1),(3,2),(-3,3),(2,4)}.

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3 years ago

(4 - 10) - ( 8 ÷ ( -2))

NeTakaya

The answer would be -2

(4-10)-(8 ÷(-2))

(-6)-(-4)

-6+4

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3 years ago

Read 2 more answers

What are the 4 different ways you can solve a quadratic equation.

mars1129 [50]

Answer:

$by \: using \: completing \: the \: square \: method \\ by \: using \: quadratic \: formula \: \: - b \: plus \: or \: minus \frac{ \sqrt{ {b}^{2} - 4ac } }{2a} \\ by \: factorizing \: \\ this \: it \: the \: only \: one \: i \: know \:$

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3 years ago

Water is flowing into and out of two vats, Vat A and Vat B. The amount of water, in gallons, in Vat A at time t hours is given b

svetoff [14.1K]

Note: The first file attached contains the clear and complete question

Answer:

a) The times at which the graph of A(t) has horizontal tangent are t = 1 and t = 7

A(t) has a local maximum at t=7

A(t) has a local minimum at t=1

b) The times at which the graph of D(t) has horizontal tangent are t = 1.59 and t = 7.74

D(t) has a local maximum at t=1.59

D(t) has a local minimum at t=7.74

c) A(t) = (-t^3) + 8(t^2) -21t + 40

d) The water level in vat A is rising most rapidly at t = 4 hrs

e) 138 gallons

f) 18 gallons per hour

g) 98 gallons

Step-by-step explanation:

For clarity and easiness of expression, the calculations are handwritten and attached as files below.

Each step is neatly expressed and solutions to each part of the question are clearly written

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3 years ago