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Ghella [55]
4 years ago
6

10 and two tens, and then double the amount, and 5, 3, and 2. How much now?

Mathematics
1 answer:
DENIUS [597]4 years ago
8 0
Down load photo math
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If the each side of equalaterial triangle is a cm. what is the area?​
Yuri [45]

Step-by-step explanation:

area \: of \: a \: triangle =  \frac{1}{2}  \times base \times height \\  \\ base =  \frac{a}{2} cm \\  {h}^{2}  +   {( \frac{a}{2} )}^{2}  =  {a}^{2}  \\  \\ h =  \sqrt{ {a}^{2} -  \frac{ {a}^{2} }{4}  }  \\  \\ area \: of \: triangle =  \frac{1}{2}  \times b \times h \\  =  \frac{1}{2}  \times  \frac{a}{2}  \times  \sqrt{ {a}^{2}  -  \frac{ {a}^{2} }{4} }  \\  \\  =  \frac{a}{4}  \times  \sqrt{ {a}^{2} -  \frac{ {a}^{2} }{4}  }

5 0
3 years ago
A triangle has side lengths 1.5 cm, 2 cm, and 3 cm. Is this a right triangle? Explain.
Alisiya [41]

Answer:

No

Step-by-step explanation:

To figure out whether a triangle is a right triangle using only the side lengths, you can use the Pythagorean theorem:

a^2 + b^2 = c^2

1.5^2 + 2^2 = 3^2

2.25 + 4 = 9

Since this equation isn't true, these numbers cannot be the side lengths of a right triangle.

8 0
3 years ago
Solve 22 + 2x + 7 = ( using the Quadratic Formula. Select all that
g100num [7]

Answer:

x = -15/2

Step-by-step explanation:

Combine the expressions and isolate the variable x.

6 0
3 years ago
I need help with these fast. Will give you brainliest and all my points
Amanda [17]
I am trying hard to help give me a second
6 0
3 years ago
Factorise p² + pq - p³ - q² completely ​
bagirrra123 [75]

Answer:

The expression is not factorable with rational numbers.

p ^2 + p q − p ^3 − q ^2

Step-by-step explanation:

6 0
3 years ago
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