3 years ago

Each side of an equilateral triangle measures 9cm. Find the height, h, of the triangle.

1 answer:

4 0

$Heigh \ for\ equilateral \ triangle \ is \calculated\ from\ formula:\\\\h=\frac{\sqrt3}{2}a\\\\a-side\ of\ triangle\\\\a=9cm\\\\h=\frac{\sqrt3}{2}*9=\frac{9\sqrt3}{2}=4,5\sqrt2cm$

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Two bicyclists were racing toward each other when they were 98 miles apart. Three hours later they did not meet yet and the dist

lesya [120]

Let, speed of 1st bicyclist is x.

So, speed of 2nd bicyclist is x-3 .

We know, relative speed when two objects moves towards each other :

$v = x + ( x-3 )\\\\v = 2x - 3$

Now, distance travelled in 3 hours is (98-2) miles .

So,

$2x-3 = \dfrac{96}{3}\\\\2x - 3 = 32\\\\2x = 35\\\\x = 17.5\ mph$

Therefore, speed of bikes are 17.5 mph and 14.5 mph.

Hence, this is the required solution.

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2 years ago

John is paid 5% commission on the value of photocopiers he sells. Last week he sold $24,000 worth of copiers. He decided to inve

allsm [11]

Answer:

5040

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3 years ago

A box of 15 cookies cost 8 dollars how much dies it cosy to buy 1 cookie

3241004551 [841]

15÷8=1.875
I would round up to $1.88 /cookie.

4 0

3 years ago

What numbers add up to-15 but when multiplied gives me-54

OLga [1]

The answer would be -18 and 3

6 0

3 years ago

{(24p – 66) = 3p + 43

Alenkinab [10]

$\text {Hello! Let's Solve this Equation!}$

$\text {\underline {The First Step is to Subtract 3p}}$

$\text {24p-66-3p=3p+43-3p}$

$\text {Your New Problem Is: 21p-66=43}$

$\text {\underline {The Next Step Is to Add 66}}$

$\text {21p-66+66=43+66}$

$\text {Your New Problem Is: 21p=109}$

$\text {\underline {The Final Step is to Divide 21}}$

$\text {21p/21=109/21}$

$\text {Your Answer Would Be:}$

$\fbox {p=109/21}$

$\text {Best of Luck!}$

5 0

3 years ago