3 years ago

How to solve this question

Mathematics

1 answer:

lana [24]3 years ago

3 0

Subtract 7 from both sides then divide both sides by X so the correct answer would be B.) y= n-7/x

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Translate to equation<br><br> the product of -11 and the square of a number

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Answer:

Step-by-step explanation:

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Humans can hear sounds with frequencies up to 20,000 Hz, while dolphins can hear sounds as high as 150,000 Hz. Write these numbe

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20,000 Hz = 2 × 10^4 Hz

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2 years ago

[(8 + 10) ÷ 3] + 3 • (7 - 3) equals?

kakasveta [241]

[(8+10)/3]+3.(7-3)=(18/3)+3.(4)=6+12=18

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3 years ago

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The drama club spent $35 on decorations and $8.50 per person on food for a cast party. The total cost of the food

jenyasd209 [6]

Answer:

Option C) 27 people

Step-by-step explanation:

Let

x ----> the number of people

we know that

The cost of decorations ($35) plus the number of people (x) multiplied by the cost per person on food ($8.50) must be equal to $264.50

The linear equation that represent this situation is

$35+8.50x=264.50$

solve for x

Subtract 35 both sides

$8.50x=264.50-35$

$8.50x=229.50$

Divide by 8.50 both sides

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2 years ago

11-Determine the specific heat of a material if a 12-g sample absorbed 96 J as it was heated from 20°C to 40°C. *

kompoz [17]

Answer:

$c=0.4\ J/g^{\circ} C$

Step-by-step explanation:

Given that,

Mass of a sample, m = 12 g

Heat absobed by the sample, Q = 96 J

It was heated from 20°C to 40°C.

We need to find the specific heat of a material. The heat absorbed by a sample is given by :

$Q=mc\Delta T\\\\c=\dfrac{Q}{m\Delta T}\\\\c=\dfrac{96}{12\times (40-20)}\\\\=0.4\ J/g^{\circ} C$

So, the specific heat of the material is $0.4\ J/g^{\circ} C$ .

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3 years ago