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3 years ago

Simplify three to the negative ninth divided by three to the negative twelfth

Mathematics

1 answer:

kakasveta [241]3 years ago

6 0

Answer:

Step-by-step explanation:

sorry if i'm wrong

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Earl E. Bird se levanta às 8h para trabalhar. Quando ele dirige a uma velocidade média de 40 mph, ele se atrasa 3 minutos. Quand

tatiyna

Answer: 48 millas por hora

Step-by-step explanation: 40t + 2= 60t - 3, es t = .25.

la distancia de su casa a su trabajo es 40(0.25 +0.05) =12 millas allí para su velocidad promedio debería ser 12/0.25 = 48 millas por hora

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3 years ago

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Talja [164]

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Step-by-step explanation:

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3 years ago

An angle measures 126° more than the measure of its supplementary angle. What is the measure of each angle?

Crazy boy [7]

Solution:

We know that:

A pair of supplementary angles always sum up to 180°

This means that:

$x + x + 126 = 180$

Step-by step calculations:

Combine like terms and simplify:

$x + x + 126 = 180$
=> $(x + x) + 126 = 180$
=> $2x + 126 = 180$

Subtract 126 both sides:

=> $2x + 126 - 126 = 180 - 126$
=> $2x = 54$

Divide 2 both sides:

=> $\frac{2x}{2} = \frac{54}{2}$
=> $x = 27$

This means that one angle is 27°. Let's find the other angle.

Finding the other angle:

$27 + 126 = Other \space\ angle$
=> $153 \space\ = Other \space\ angle$

Thus, the measure of the angles are 27° and 153°.

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2 years ago

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A cereal mixture contains almond, wheat and corn in the ratio of 3:5:7. What amount of this mixture contains 9 kg of almond?

kirza4 [7]

Answer:

45 Kg of the of this mixture contains 9 kg of almond

Step-by-step explanation:

Given:

The ratio of almond, wheat and corn = 3:5:7.

To Find:

Amount of this mixture contains 9 kg of almond =?

Solution:

The total of the fraction = 3+5+7 = 15

Let the total amount of the mixture be X, then

Then

$\frac{ \text{ratio of the almond in the mixture}}{\text{total ratio}} \times X = 9$

$\frac{3}{15} \times X = 9$

$X = 9 \times \frac{15}{3}$

$X = 9 \times 5$

X = 45

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4 years ago