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3 years ago

How do u write a expression

Mathematics

2 answers:

Irina18 [472]3 years ago

8 0

Answer:

Writing an expression is basically like writing the same thing you hear or read ( contains numbers ).

zhuklara [117]3 years ago

3 0

Answer:

<h2><u>it depends on what expression u want </u></h2>

Step-by-step explanation:

An example of a mathematical expression with a variable is 2x + 3. All variables must have a coefficient, a number that is multiplied by the variable. In the expression 2x + 3, the coefficient of x is the number 2, and it means 2 times x plus 3.

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The volume of a cone-shaped hole is 16 pi ft cubed . If the hole is 3 ft deep, what is the radius of the hole?

VashaNatasha [74]

V = 1/3 • π • radius cubed • height

If the volume is is 16π and the height is 3, then 16π = 1/3 • π • r cubed • 3

16π ÷ (1/3 • π • 3) = 16

radius squared = 16 √16 = 4, so radius = 4

You can also check: 1/3 • r cubed • 3 = 16 The only value left to multiply is π

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3 years ago

In an area of Russia records were kept on the relationship between the rainfall (in inches) and the yield of wheat (bushels per

skelet666 [1.2K]

Answer:

Option d.

Step-by-step explanation:

The equation of the line of least squares is given as

$\hat{y} = -9.12+ 4.38x$

where $\hat{y}$ is the yield of wheat (bushels per acre) and x is the rainfall (in inches).

We need to find the expected number of inches of rain if the yield is 60 bushels of wheat per acre.

Substitute $\hat{y}=60$ in the given equation.

$60= -9.12+ 4.38x$

Add 9.12 on both sides.

$60+9.12=4.38x$

$69.12=4.38x$

Divide both sides by 4.38.

$\frac{69.12}{4.38}=x$

$x\approx 15.78$

The expected number of inches of rain is 15.78.

Therefore, the correct option is d.

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3 years ago

When data consist of percentages, ratios, growth rates, or other rates of change, the geometric mean is a useful measure of cent

weqwewe [10]

$mean=\sqrt[5]{1.093\cdot1.12\cdot1.145\cdot1.046\cdot1.057}=\sqrt[5]{1.5497096705104}\\\\ \approx 1.0916$ <span>

The geometric mean is 1.0916.</span>

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