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lubasha [3.4K]
3 years ago
14

Help, help, help!!! I really need help on this whole page!!!! 8th grade math!!!

Mathematics
1 answer:
anastassius [24]3 years ago
4 0
Trying using photo math or on google there is actually a slope calculator called functions calculator in stupid sorry for not answering it lol
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Prove that :( 1 + 1/<img src="https://tex.z-dn.net/?f=tan%5E%7B2%7DA" id="TexFormula1" title="tan^{2}A" alt="tan^{2}A" align="ab
Aliun [14]

Answer:

See explanation

Step-by-step explanation:

Simplify left and right parts separately.

<u>Left part:</u>

\left(1+\dfrac{1}{\tan^2A}\right)\left(1+\dfrac{1}{\cot ^2A}\right)\\ \\=\left(1+\dfrac{1}{\frac{\sin^2A}{\cos^2A}}\right)\left(1+\dfrac{1}{\frac{\cos^2A}{\sin^2A}}\right)\\ \\=\left(1+\dfrac{\cos^2A}{\sin^2A}\right)\left(1+\dfrac{\sin^2A}{\cos^2A}\right)\\ \\=\dfrac{\sin^2A+\cos^2A}{\sin^2A}\cdot \dfrac{\cos^2A+\sin^A}{\cos^2A}\\ \\=\dfrac{1}{\sin^2A}\cdot \dfrac{1}{\cos^2A}\\ \\=\dfrac{1}{\sin^2A\cos^2A}

<u>Right part:</u>

\dfrac{1}{\sin^2A-\sin^4A}\\ \\=\dfrac{1}{\sin^2A(1-\sin^2A)}\\ \\=\dfrac{1}{\sin^2A\cos^2A}

Since simplified left and right parts are the same, then the equality is true.

3 0
3 years ago
There are 6 girls and 7 boys in a class. A team of 10 players is to be selected from the class. How many different combinations
Anna71 [15]
13C10 = 13C3 = 13x12x11/(1x2x3) =
"286 ways".
4 0
3 years ago
Read 2 more answers
Frank has recentlybstarted living a healthier lifestyle . He originally weighed 230 and a half pounds . Now he weighs 198 and th
Ksivusya [100]

Answer:

31 9/10

Step-by-step explanation:

if u want to find out how many pounds u lose u subtract 230 1/2 by 198 3/5

230 5/10 minus 198 6/10

31 9/10

hope this ehlps

5 0
3 years ago
Read 2 more answers
How do you solve thus ? 8=8v-4(v+8)
Harrizon [31]
8 = 8v - 4 (v + 8)

Distribute the 4 through the parentheses

8 = 8v - 4v - 32

combine like terms

8 = 4v - 32

add 32 to both sides

8 + 32 = 4v -32 + 32

combine like terms

40 = 4v

divide each side by 4

40/10 = v

4 = v

v= 4
8 0
3 years ago
NEED ANSWER ASAP!! TYYY SO MUCH IN ADVANCE
Kipish [7]

Answer:

24.84

Step-by-step explanation:

use Pythagoras theorem

h=√p²+b² = √(19)²+(16)² = √617 =24.84

4 0
3 years ago
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