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3 years ago

The mail is 84 Meters long

Mathematics

2 answers:

Vlada [557]3 years ago

7 0

Answer:

84 - 38 = 46

Step-by-step explanation:

Simple math just subtract to see how much longer the mail is then the post office.

bija089 [108]3 years ago

7 0

The mail is 46 meters longer

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mafiozo [28]

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3 years ago

20 donuts in 4 boxes = ? donuts per box

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Answer:

20 donuts divided into 4 boxes would have 5 donuts per box.

Step-by-step explanation:

20/4 = 5

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3 years ago

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Which is the coefficient in the expression 7x + 14?

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Answer:

Step-by-step explanation:

A coefficient is the number before a variable (x, y, z...etc).

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3 years ago

How do to soving problems in math what is a trick

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Answer:

Two-Step Addition

Two-Step Subtraction

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Step-by-step explanation:

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3 years ago

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Determine if triangle ABC with coordinates A (0, 2), B (2, 5), and C (−1, 7) is an isosceles triangle. Use evidence to support y

kirill115 [55]

Answer:

The triangle ABC is an isosceles right triangle

Step-by-step explanation:

we have

The coordinates of triangle ABC are

A (0, 2), B (2, 5), and C (−1, 7)

we know that

An isosceles triangle has two equal sides and two equal internal angles

The formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

step 1

Find the distance AB

substitute in the formula

$d=\sqrt{(5-2)^{2}+(2-0)^{2}}$

$d=\sqrt{(3)^{2}+(2)^{2}}$

$dAB=\sqrt{13}\ units$

step 2

Find the distance BC

substitute in the formula

$d=\sqrt{(7-5)^{2}+(-1-2)^{2}}$

$d=\sqrt{(2)^{2}+(-3)^{2}}$

$dBC=\sqrt{13}\ units$

step 3

Find the distance AC

substitute in the formula

$d=\sqrt{(7-2)^{2}+(-1-0)^{2}}$

$d=\sqrt{(5)^{2}+(-1)^{2}}$

$dAC=\sqrt{26}\ units$

step 4

Compare the length sides

$dAB=\sqrt{13}\ units$

$dBC=\sqrt{13}\ units$

$dAC=\sqrt{26}\ units$

$dAB=dBC$

therefore

Is an isosceles triangle

Applying the Pythagoras Theorem

$(AC)^{2} =(AB)^{2}+(BC)^{2}$

substitute

$(\sqrt{26})^{2} =(\sqrt{13})^{2}+(\sqrt{13})^{2}$

$26=13+13$

$26=26$ -----> is true

therefore

Is an isosceles right triangle

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4 years ago