4 years ago

A number cc minus 3.4 is less than 14. Write this word sentence as an inequality.

1 answer:

3 0

An inequality is used when the exact value of the variable is not determined. Using the rules of inequality, we let the number cc be equal to x and 14 will be preceded by a less than sign. Hence, we can the word sentence as x – 3.4 < 14.

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I have to explain how u can use properties of operations to evaluate the expression 18+4(28)

liraira [26]

Answer:

116

Step-by-step explanation:

You have to add 18+4 first. You should then get 22.Last you must multiply 22 by 28 to get 116

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3 years ago

Find a single expression that represents the area of the outer ring of the circle if the area of the whole circle is represented

sp2606 [1]

Answer: The answer is $A_o=2\pi\sqrt{\dfrac{7}{22}(25x^2-12x-9)}.$

Step-by-step explanation: Given that the area of the whole circle is represented by the expression

$A_c=25x^2-12x-9.$

We are to find the area of the outer ring of the circle, i.e., to find the circumference of the circle.

Now, if 'r' represents the radius of the circle, then we have

$A_c=\pi r^2\\\\\Rightarrow \dfrac{22}{7}r^2=25x^2-12x-9\\\\ \Rightarrow r^2=\dfrac{7}{22}(25x^2-12x-9)\\\\\Rightarrow r=\sqrt{\dfrac{7}{22}(25x^2-12x-9)}.$