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3 years ago

Evaluate \dfrac{e}{4}+2f-3

Mathematics

1 answer:

Igoryamba3 years ago

8 0

Answer:

The value of given expression is 1.

Step-by-step explanation:

Consider the given expression is

$\dfrac{e}{4}+2f-3$

When e=12 and $f=\dfrac{1}{2}$ .

Substitute e=12 and $f=\dfrac{1}{2}$ in the given expression.

$\dfrac{12}{4}+2(\dfrac{1}{2})-3$

On simplification we get

$3+1-3$

$1$

Therefore, the value of given expression is 1.

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Houa bought 11 chicken wings for $23.10. How much does each wing cost?

MAXImum [283]

If Houa bought 11 chicken wings for $23.10.The cost of each wing will be $2.310.

<h3>What is an arithmetic operation?</h3>

It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has basic four operators that are +, -, ×, and ÷.

It is given that, Houa bought 11 chicken wings for $23.10.

We'll apply division by Splitting into equal halves or groups, the division may be used to decide how to distribute a dish of cookies evenly among a group. Doing division is simple it is a type of operation in which we will distribute the items.

Suppose the cost of each wing is x.

x = $23.10 / 10

x = $2.310

Thus, if Houa bought 11 chicken wings for $23.10.The cost of each wing will be $2.310.

Learn more about the arithmetic operation here:

brainly.com/question/20595275

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4 0

1 year ago

A used car dealership buys a car for $2800 and then sells it for $4500 what is the percent increase?

Murljashka [212]

Alright, so we have the difference = 4500-2800=1700. To find the percent increase, we do 1700/2800=around 0.61 = around 61% percent

3 0

3 years ago

Read 2 more answers

If the average yield of cucumber acre is 800 kg, with a variance 1600 kg, and that the amount of the cucumber follows the normal

lorasvet [3.4K]

Answer:

The percentage is

$P(x_1 < X < x_2 ) = 51.1 \%$

The probability is $P(Z > 2.5 ) = 0.0062097$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 800$

The variance is $var(x) = 1600 \ kg$

The range consider is $x_1 = 778 \ kg \ x_2 = 834 \ kg$

The value consider in second question is $x = 900 \ kg$

Generally the standard deviation is mathematically represented as

$\sigma = \sqrt{var (x)}$

substituting value

$\sigma = \sqrt{1600}$

$\sigma = 40$

The percentage of a cucumber give the crop amount between 778 and 834 kg is mathematically represented as

$P(x_1 < X < x_2 ) = P( \frac{x_1 - \mu }{\sigma} < \frac{X - \mu }{ \sigma } < \frac{x_2 - \mu }{\sigma } )$

Generally $\frac{X - \mu }{ \sigma } = Z (standardized \ value \ of \ X)$

$P(x_1 < X < x_2 ) = P( \frac{778 - 800 }{40} < Z< \frac{834 - 800 }{40 } )$

$P(x_1 < X < x_2 ) = P(z_2 < 0.85) - P(z_1 < -0.55)$

From the z-table the value for $P(z_1 < 0.85) = 0.80234$

and $P(z_1 < -0.55) = 0.29116$

$P(x_1 < X < x_2 ) = 0.80234 - 0.29116$

$P(x_1 < X < x_2 ) = 0.51118$

The percentage is

$P(x_1 < X < x_2 ) = 51.1 \%$

The probability of cucumber give the crop exceed 900 kg is mathematically represented as

$P(X > x ) = P(\frac{X - \mu }{\sigma } > \frac{x - \mu }{\sigma } )$

substituting values

$P(X > x ) = P( \frac{X - \mu }{\sigma } >\frac{900 - 800 }{40 } )$

$P(X > x ) = P(Z >2.5 )$

From the z-table the value for $P(Z > 2.5 ) = 0.0062097$

7 0

3 years ago

A recipe calls for 15oz of flour every 8 oz of milk. if you use 15oz of milk, how much flour should you use

maksim [4K]

We are given that 8 oz of milk requires 15 oz of flour.

To know the amount of flour needed for 15 oz of milk, we will simply use cross multiplication as follows:
amount of flour needed = (15*15) / (8) = 28.125 oz

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3 years ago

What is the solution to 0.3(12x-16)=0.4(12-3x)

Colt1911 [192]

X = 2 expand the brackets and then collect like terms (x's on one side) and then dived to get x on its own! :)

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3 years ago

Read 2 more answers