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TiliK225 [7]
3 years ago
12

(60 points to best answer) (asap please and thank you)

Mathematics
1 answer:
inna [77]3 years ago
3 0

Answer: 83.\overline{3}\text{ feet}

Step-by-step explanation:

Since, In the given diagram,

The sides of the triangles ABC and EDC are,

BC = 62 feet, DC = 93 feet and DE = 125 feet(given)

And, angles B and D are right angles,

⇒ \angle ABC\cong \angle EDC

\text{Also, } \angle ACB\cong \angle ECD    ( Vertically opposite angles )

By AA similarity postulate,

\triangle ABC\sim \triangle EDC

The sides of similar triangles are in same proportion ,

⇒  \frac{AB}{ED}=\frac{BC}{DC}

⇒  AB \times DC = BC \times ED

⇒  AB = \frac{BC.ED}{DC}

By substituting the values,

We get,

⇒  AB = \frac{62\times 125}{93}

⇒  AB = \frac{7750}{93}=83.\overline{3}\text{ feet}

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The ages of 3 brothers are represented by consecutive integers. If the oldest brothers age is decreased by twice the youngest br
zepelin [54]

Answer:

The youngest brother's age is 21 years.

Step-by-step explanation:

Given:

The ages of 3 brothers are consecutive integers.

If the oldest brothers age is decreased by twice the youngest brother age the result is -19

To find the age of the youngest brother.

Solution:

Let the age of youngest broth be = x  years

The ages are consecutive integers.

So, age of the next older brother will be = (x+1) years

The age of the oldest brother will be = (x+2) years

The oldest brothers age is decreased by twice the youngest brother age.

The above statement can be represented as:

⇒ (x+2)-2x

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Subtracting both sides by 2.

-x+2-2=-19-2

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Multiplying both sides by -1.

∴ x=21

Thus, the youngest brother's age is 21 years

6 0
3 years ago
12 times a number decreased by 5 is no more than 55
lions [1.4K]

Answer:

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12 times a number (represented by n) is 12n.

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12^2 +b^2 = 20^2 because of the Pythagorean theorem
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