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2 years ago

40 points please help me find each area of the triangle

Mathematics

1 answer:

Alborosie2 years ago

3 0

9. 1/2 x 8 x 10 = 40 in²

10. 1/2 x 7 x 9 = 31.5 yd²

11. 1/2 x 12 x 8 = 48 cm²

12. 1/2 x 3 x 16 = 24 ft²

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-3D - 15 i dont get how to do gcm or factoring out

Nookie1986 [14]

Answer:

-3 (D+5)

Step-by-step explanation:

Problem: -3D -15

what you do is find the highest number each one is divisible by.

In this case they can both be divided by -3.

Bring it out of the parenthesis and leave the rest inside

Thus leaving -3 (D+5)

5 0

4 years ago

Solve for [0,2pi): 3sin^2x-6sinx=0

Ainat [17]

Given the equation :

$3\sin ^2x-6\sin x=0$

Let: y = sin x

So,

$\sin ^2x=y^2$

the given equation will be:

$3y^2-6y=0$

Solve for y, take 3y as a common:

$\begin{gathered} 3y(y-2)=0 \\ 3y=0\rightarrow y=0 \\ y-2=0\rightarrow y=2 \end{gathered}$

so,

$\begin{gathered} y=0\rightarrow\sin x=0\rightarrow x=0or\pi \\ y=2\rightarrow\sin x=2 \end{gathered}$

Note: the range of sine function is [ -1, 1]

So, sin x = 2 ( is rejected)

So, the answer will be: x ={ 0 , pi }

3 0

2 years ago

Need help with 7 and 8 please

iren2701 [21]

7 is “what was our opinion of the experiment and results?”

8 is “random”

3 0

4 years ago

Read 2 more answers

Simplify radical 175

Dominik [7]

$\sqrt{175}=\sqrt{5^{2}\cdot 7}=5\sqrt{7}$

7 0

3 years ago

Hello me please asap

solniwko [45]

Answer:

7,10,19 and 4,5,9

Step-by-step explanation:

According to the Triangle Inequality theorem, then largest side of a triangle must be smaller than the sum of the smaller sides. For example, in 5,6,8, the largest side is 8, and 5 + 6 = 11, which is larger than 8. 7 + 10 = 17, which is not larger than 19, and 4 + 5 = 9, which is not larger than 9

6 0

3 years ago