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3 years ago

Which property does the equation

2 answers:

8 0

A(B + C) = A(B) + A(C) is a distributive property.

So:

24(70 + 5) = 24(70) + 24(5) is also a distributive property.

Option C.

Anarel [89]3 years ago

8 0

This would be the distributive property because:

a (b + c) = ab + ac

'a' multiplied by the quantity of '(b + c)'

is equal to

'a' times 'b' + 'a' times 'c'

The answer you are looking for is C)Distributive Property

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Which expression is the simplest form of −(2x 3 +x 2 )+3(x 3 −4x 2 )?

andreev551 [17]

Answer:

=x3−13x2

Step-by-step explanation:

8 0

2 years ago

Two consecutive numbers whose squares add up to 685

SVEN [57.7K]

Question 790617: The sum of the squares of two consecutive integers is 685. Find the integers.

I tried solving this myself and got 324 and 325 which is not the right answer, I'm not very good with word problems. Thank you in advance!

(Scroll Down for Answer!)

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Found 2 solutions by rothauserc, stanbon:Answer by rothauserc(4570) About Me (Show Source):

You can put this solution on YOUR website!

we are given the following

x^2 +(x+1)^2 = 685

x^2 +x^2+2x+1 = 685

2x^2 +2x = 684

x^2 +x = 342 and

x^2 +x -342 = 0

use quadratic equation to solve for x

x = (-1 + or - square root(1 - 4*1*(-342)) / 2

x = (-1 + or - 37) / 2

the problem does not state if our consecutive integers are positive or negative

x = 18 or -19

18^2 + 19^2 = 685

324 + 361 = 685

685 = 685

now

-19^2 + -18^2 = 685

361 + 325 = 685

so our integers are 18, 19, -19, -18

Answer by stanbon(75874) About Me (Show Source):

You can put this solution on YOUR website!

The sum of the squares of two consecutive integers is 685. Find the integers.

--------

1st: x

2nd: x+1

------

Equation:

x^2 + (x+1)^2 = 685

x^2 + x^2 + 2x + 1 = 685

Step-by-step explanation:

8 0

2 years ago

if a knockout tennis competition starts with 64 players how many runs will it take to reach the grand final show your steps usin

snow_tiger [21]

Answer:

5 runs

Step-by-step explanation:

Initial number is 64 players

<u>Number of players reduce twice every run and will be equal to 2 to reach the grand final</u>

64*(1/2)^x = 2
(1/2)^x = 1/32
2^-x = 2^-5
-x = -5
x = 5

Number of runs is 5

64 > 32 > 16 > 8 > 4 > 2

8 0

2 years ago

Between 1965 and 1980, the world population grew at an annual rate of 2%. Using the rule of 72, population is expected to double

Fiesta28 [93]

Answer:

The population is expected to double in 36 years

Step-by-step explanation:

According to the the rule of 72,

A value is doubled if the product of the annual rate and number of years is 72,

Given,

The annual rate of interest = 2%

Let x be the time in years after 1965,

By the above statement,

The population will double if,

x × 2 = 72 ⇒ x = 36

Hence, the after 36 years since 1965 the population will be doubled,

i.e in 2001. ( ∵ 36 years after 1965 )

4 0

3 years ago

Which choice is equivalent to the expression below?<br> -81

mixas84 [53]

Answer:

Well, The expression -81 is equal to -81.

Step-by-step explanation:

-81=-81

7 0

3 years ago