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baherus [9]
3 years ago
9

3)An inch is equal to about 2.54 centimeters. Write an expression that estimates the number of centimeters in "x" inches. Then,

estimate the number of centimeters in 12 inches. Please help me with this one.
Mathematics
1 answer:
Mama L [17]3 years ago
5 0

Answer: 2.54x is the expression

12 in. Is equal to 30.48cm

Step-by-step explanation: multiplying 12 and 2.54 is how you get 30.48 and the expression is just so you can figure out how to get 12 inches, you’re really just showing the formula you used. Hope this helped.

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What is the conversion?
Gelneren [198K]

Answer:

  see below

Step-by-step explanation:

The conversion factor in the box is the product ...

  \dfrac{1\,\text{kPa}}{1000\,\text{Pa}}\cdot\left(\dfrac{1\,\text{m}}{100\,\text{cm}}\right)^3=10^{-9}\,\dfrac{\text{kPa m}^3}{\text{Pa cm}^3}

_____

The purpose of a conversion factor is to multiply by 1 in the form of a ratio that changes the units. We know that 1000 Pa = 1 kPa, so the ratio (1 kPa)/(1000 Pa) is the ratio of two equal quantities. It has the value 1 and will change units from Pa to kPa.

Likewise, 100 cm = 1 m, so (1 m)/(100 cm) will change the units from cm to m. However the given expression uses cm³, so we need to multiply by the conversion factor 3 times. That factor is ((1 m)/(100 cm))³ = (1 m³)/(10⁶ cm³).

To choose the appropriate conversion factor, look at the units you have (Pa, cm) and the units you want (kPa, m). Find the relationship these have to each other, and write the ratio so that it will cancel the units you have and leave the units you want.

When SI units are involved the prefixes help you out. k = kilo = 1000; c = centi = 1/100. It is worthwhile to get to know them.

8 0
3 years ago
How can we use a distributive property by a CALCULATOR
nika2105 [10]
You can't use distributive property by a calculator
7 0
3 years ago
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Write the number in expanded form 249,104,330
olga2289 [7]
200,000,000 + 40,000,000 + 9,000,000 + 100,000 + 4,000 + 300 + 30
6 0
3 years ago
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when nancy started middle school, she was 60 inches tall. when she started high school, she was 66 inches tall. what was the per
Ivahew [28]

Answer:

The percent change in Nancy height is 10%

Step-by-step explanation:

Given : when Nancy started middle school, she was 60 inches tall. when she started high school, she was 66 inches tall.

We have to find the percent change in her height.

Percentage change is given by the ratio of the difference in old value and new value to the old value times 100

Mathematically written as

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For the given data,

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New value = 66 inches

Thus, the Percentage change is given as,

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Simlify, we have,

Percentage\ change =\frac{6}{60}\times 100

Thus, The percent change in her height is 10%

7 0
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amid [387]
Let bob score =x

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