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zaharov [31]
3 years ago
6

The inequality x+c>-2.55 has the solution x>4.85 What is the value of c? How do you know?​

Mathematics
1 answer:
Novay_Z [31]3 years ago
7 0

Answer:

\large\boxed{c=-7.4}

Step-by-step explanation:

x+c>-2.55\qquad\text{subtract c from both sides}\\\\x>-2.55-c\\\\\text{We have the solution}\ x>4.85.\ \text{Therefore}\\\\-2.55-c=4.85\qquad\text{add 2.55 to both sides}\\\\-2.55+2.55-c=4.85+2.55\\\\-c=7.4\qquad\text{change the signs}\\\\c=-7.4

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Answer:

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Step-by-step explanation:

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Let the number be x


Then the absolute value of the number from -2 should be 4


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So either



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4 0
3 years ago
An open box with a square base is to be made from a square piece of cardboard 24 inches on a side by cutting out a square from e
laila [671]

Answer:

x=4 Inch

Step-by-step explanation:

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If a Square of Length x cm is cut out from each corner

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Volume of a Cuboid = Length X Width X Height

V(x)= x(24-2x)(24-2x)

Simplifying

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To determine the value of x at which V is largest, we take the derivative of V(x) and solve for the critical points.

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When x=4 Inch, the volume, V of the open box is largest.

3 0
3 years ago
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