3 years ago

Add three fraction together to get a whole number using the numbers 1-9 only once

Mathematics

1 answer:

Vedmedyk [2.9K]3 years ago

3 0

Answer:

Step-by-step explanation:

1/4 + 2/8 + 3/6 = 1

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which equation describes the line that passes through the point (-3,-2) and is parallel to the line 6x+5y=6

vovikov84 [41]

Answer:

y = -6/5x - 5.6

Step-by-step explanation:

6x + 5y = 6

-6x -6x

5y = -6x + 6

/5y /5y

y = -6/5y + b

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3 years ago

Express the following relationship as a rate: biking 16 miles in 2 hours

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Answer:

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Step-by-step explanation:

8 miles per hour you can find this answer by doing 16 divided by 2

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3 years ago

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The perimeter of Δ ABC is 450 ft. If AB= 9x, BC=41x and CA=40x, what is the area of the triangle?

Nikolay [14]

Answer:

$A = 4500 ft^2$

Step-by-step explanation:

By definition:

The pre-meter P of a triangle ABC is equal to the sum of the length of its sides.

We know that:

$P = 450\ ft\\AB = 9x\\BC = 41x\\CA = 40x$

The perimeter is:

$P = AB + BC + CA\\P = 450 = 9x + 41x + 40x\\90x = 450\\x = 5$

Now we find the length of the sides:

$AB = 45\\BC = 205\\CA = 200$

Once the length of the sides is known, we use Heron's formula to calculate the area.

First I find the semiperimeter S.

$S = 0.5(45 + 205 +200)\\S = 225$

Then the Area is:

$A = \sqrt{s(s-AB)(s-BC)(s-CA)}\\\\A = \sqrt{225(225-45)(225-205)(225-200)}\\\\A = 4500\ ft^2$

5 0

4 years ago