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3 years ago

0.24a + 0.5 = 4.5 What does the variable equal

Mathematics

2 answers:

Advocard [28]3 years ago

8 0

Answer:

Step-by-step explanation:

6.08108108108

GREYUIT [131]3 years ago

4 0

Answer:

16.66

Step-by-step explanation:

1) eliminate constant first by performing the opposite operation:

0.24a+0.5-0.5=4.5-0.5

0.24a=4.0

divide both sides by 0.24

a=16.66

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Step-by-step explanation:

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An architect wants to draw a rectangle with a diagonal of 13 centimeters. The length of the rectangle is to be 3 centimeters mor

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Answer:

The rectangle is 3.2 cm by 12.6 cm

Step-by-step explanation:

See attached image for a diagram.

Choose w to represent the width because the length is described by referring to the width: it's 3 more than (add 3) triple (multiplied by 3) the width.

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The Pythagorean Theorem says $(\text{leg})^2+(\text{leg})^2=(\text{hypotenuse})^2$ so

$w^2+(3w+3)^2=13^2\\\\w^2+9w^2+18w+9=169\\\\10w^2+18w-160=0\\\\5w^2+9w-80=0\\$

Now solve using the Quadratic Formula with $a=5,\,b=9,\,c=-80$ .

$w=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\w=\frac{-9\pm\sqrt{81+1600}}{10}\\\\w=\frac{-9\pm\sqrt{1681}}{10}\\\\w=\frac{-9\pm41}{10}\\\\w=-5\text{ or }w=3.2$

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3 years ago

I need to know what x equals. HELP!!!!

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Answer:

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Step-by-step explanation:

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Read 2 more answers

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Answer:

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Step-by-step explanation:

Given

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Thus this is a polynomial of degree 3

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