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2 years ago

What is ( x3 )4 in expanded form?

Mathematics

1 answer:

Novay_Z [31]2 years ago

6 0

Answer:

Step-by-step explanation:

here you go mate

step 1

(x^3)4 equation

step 2

(x^3)4 simplify

answer

4x^3

can i get brainliest if you dont mind

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Which statement is true about this equation?

Vlad [161]

Answer:

Step-by-step explanation:

-9x-27+12 = -6x-15-3x

0=0

D) the equation has infinitely many solutions

4 0

2 years ago

The arithmetic mean (average) of four numbers is 85. If the largest of these numbers is 97, find the mean of the remaining three

Margaret [11]

Answer:

Step-by-step explanation:

Let's do this systematically:

Four numbers: a, b, c, d

Whose mean is 85: $\frac{a + b + c + d}{4} = 85$

Whose largest number is 97: $\frac{a + b + c + 97}{4} = 85$

Lets solve for the other numbers:

a+b+c+97 = 85*4 = 340

340 - 97 = 243

a+b+c = 243

at this point it doesn't matter what the numbers are, they just need to add up to 243.

We can do 243÷3=81, which is our answer

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3 years ago

A small metal bar, whose initial temperature was 10° C, is dropped into a large container of boiling water. How long will it tak

IgorC [24]

Answer

According to newton law of cooling

$\dfrac{d T}{dt} = k (T - T_a)$

and

$T = Ce^{kt} + T_a$

now At Ta = 100

T₀ = 10 °C

T₁ = 12° C

$T(0) = Ce^{0} + T_a$

10 = C + 100

C = -90

now,

$12 = -90e^k + 100$

$e^k = \dfrac{88}{90}$

$k = ln{\dfrac{88}{90}}$

at time equal to t

T(t) = 70

$T(t) = -90 (\dfrac{88}{90})^t + 100$

$70 = -90(\dfrac{88}{90})^t + 100$

$(\dfrac{88}{90})^t = \dfrac{1}{3}$

$t\times ln(\dfrac{88}{90}) = ln(\dfrac{1}{3})$

t = 48.88 s

hence, after 48.88 s the temperature of the body will be 70°C

b) time taken to reach 98°C

$T(t) = -90 (\dfrac{88}{90})^t + 100$

$98 = -90(\dfrac{88}{90})^t + 100$

$(\dfrac{88}{90})^t = \dfrac{1}{45}$

$t\times ln(\dfrac{88}{90}) = ln(\dfrac{1}{45})$

t = 390 s

hence, after 390 s the temperature of the body will be 98°C

5 0

2 years ago

Maki receives money from her relatives every year on her birthday. Last year, she received a total of $650. This year, she recei

BabaBlast [244]

Answer:

Step-by-step explanation:

percent increase = ((new number - original number) / (original number)) * 100

= ((910 - 650) / 650) * 100

= (260 / 650) * 100

= 0.4 * 100

= 40% <===== Maki's increase

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3 years ago

Joe had $100. He bought m books for n dollars each. How much money does he have left?

Gwar [14]

Answer:

100-mn

Step-by-step explanation:

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3 years ago