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4 years ago

9

how do u find the area of a triangle A. Length x width divided by 2 B. Length x width C. 1/3 (length x width) D. base times heig

ht

1 answer:

tatyana61 [14]4 years ago

6 0

Answer:

A

Step-by-step explanation:

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Margarita [4]

Answer:

1. 6x + 24

2. 8x

3. 60x-20

4. 4+10x

5. 9x+18

Step-by-step explanation:

1. 6(x+4) = 6x + 24

2. 2x(5-1) = 2x*4 = 8x

3. 10(6x-2) = 60x - 20

4. 2(2+3x) +4x = 4+6x+4x = 4+10x

5. 6(2x+3)-3x = 12x+18-3x = 9x + 18

Hope this help :3

3 0

4 years ago

In a triangle the first angle is greater than the second angle by 18 degree and less than the third angle by 10 grade. Express a

serg [7]

Answer:

The 3 angles are 62 2/3, 44 2/.3 and 72 2/3 degrees.

Step-by-step explanation:

let x be the first angle then the the second angle is x - 18 and the third angle = x + 10

The 3 angles add up to 180 so:

x + x - 18 + x + 10 = 180

3x = 180 + 18 - 10 = 188

x = 188/3 = 62 2/3 degrees.

x - 18 = 44 2/3

x + 10 = 72 2/3.

8 0

3 years ago

Which expression is equivelent please help

Helen [10]

Which expression is equivelent please help

Answer: Hi!

$-2m(m+n-4)+5(-2m+2n)+n(m+4n-5)=\\\\-2m^2-2mn+8m+(-10m+10n)+nm+4n^2-5n=\\\\-2m^2-2mn+nm+8m-10m+10n-5n+4n^2=\\\\\boxed{-2m^2-mn-2m+5n+4n^2} \\\\\boxed{\boxed{-2m^2+4n^2-mn-2m+5n}\quad\to\quad C)}$

3 0

4 years ago

Help with number 17 please

Vladimir79 [104]

Answer:

B

Step-by-step explanation:

/ is positive

| neutral or something

\ is negative

- is also neutral

4 0

2 years ago

Read 2 more answers

Simplify −2i sqrt −12<br><br> please help!

defon

$\bf \textit{recall that }i^2=-1\\\\
-------------------------------\\\\
-2i\sqrt{-12}\quad 
\begin{cases}
12=2\cdot 2\cdot 3\\
\qquad 2^2\cdot 3
\end{cases}\implies -2i\sqrt{-1\cdot 2^2\cdot 3}
\\\\\\
-2i\sqrt{-1}\cdot \sqrt{2^2}\cdot \sqrt{3}\implies -2i\cdot i\cdot 2\cdot \sqrt{3}\implies -4i^2\sqrt{3}
\\\\\\
-4(-1)\sqrt{3}\implies 4\sqrt{3}$

7 0

3 years ago