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2 years ago

Kiesha and her classmates wrote proportions for the reduction of a triangle,

Mathematics

2 answers:

klemol [59]2 years ago

8 0

Answer:

1,2,4

Step-by-step explanation:

Bumek [7]2 years ago

4 0

Answer:

Trust the person above me, they're correct it's A,B,D

Step-by-step explanation:

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103.561 + 102.327 PLZ ANSWER ASAP

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the answer is 205.888

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3 years ago

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Convert 14ML (megalitres) iinto kilolitres

irakobra [83]

Answer:

14000Kilolitres

Step-by-step explanation:

$1megalitre = 1000kilolitres \\$

$14megalitres = xkilolitres$

Cross multiply

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2 years ago

Three ounces of cinnamon cost 2.40 if there are 16 ounces in 1 pound how much does cinnamon cost per pound

loris [4]

The cinnamon would cost $12.80 per pound.

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2 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

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2 years ago

Find the inverse of the function. f(x) = 6x3 - 8

mr Goodwill [35]

Replace f(x)fx with yy.y=6x3−8y=6x3-8Interchange the variables.x=6y3−8x=6y3-8Solve for yy.
y=3√36(x+8)6y=36x+836Solve for yy and replace with f−1(x)f-1x.
f−1(x)=3√36(x+8)6

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2 years ago

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