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Gennadij [26K]
2 years ago
10

11. The formula for the are of a triangle is A = 1/2 bh.

Mathematics
1 answer:
RoseWind [281]2 years ago
7 0

Answer:

2A/b

Step-by-step explanation:

A=1/2(b)(h)

2A=(b)(h)    Multiply both sides by 2

2A/b=h       Divide both sides by b

h=2A/b

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What is 5X minus Y equals 6+ negative 2X plus Y=8
vova2212 [387]

Answer:

For the given expression: X = (\frac{10}{3})  , Y =  (\frac{26}{3})

Step-by-step explanation:

Here, the given expression in statement form is given as:

5 X minus Y equals 6 + negative 2 X plus Y = 8

Now, converting the given statement mathematically, we get:

5X  - Y  = 6 + (-2X) + Y  = 8

Now, considering first  and the last  terms,we get:

5 X - Y  = 8  .... (1)

and , considering second and the last  terms,we get:

6 + (-2X) + Y  = 8 or, -2X  + Y  = 2  ......... (2)

Adding (1) and (2) , we get:

5 X - Y  - 2 X  + Y  = 8 + 2

or, 3 X =  10

or, X = 10/3  = 3.34

Now, 5X - Y = 8

or, 5(\frac{10}{3}) - Y = 8\\ \implies Y = \frac{50}{3} - 8  = \frac{50 - 24}{3}  = \frac{26}{3} \\\implies Y = \frac{26}{3}

Hence, for the given expression:

X = (\frac{10}{3})  , Y =  (\frac{26}{3})

3 0
3 years ago
A school custodian waxed the gymnasium floor that measured 20 feet by 20 feet. How many square feet did she have to wax?
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Hey there, all you do is multiply 20 by 20, 20×20=400. Therefore, the answer is 400 square feet.
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8 0
3 years ago
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I need help with this problem.
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