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2 years ago

HELP ITS FOR MY EXTRA CREDIT!

Mathematics

2 answers:

insens350 [35]2 years ago

8 0

Answer:

10.5 Km^2

Step-by-step explanation:

3.5 x 3 = 10.5

hichkok12 [17]2 years ago

8 0

Answer:

10.5

Step-by-step explanation:

Times 3 by 3

Then times 0.5 x 3

Add 9 and 1.5

That is 10.5

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Choose the correct answer.

antiseptic1488 [7]

Answer:

option 2. 9.3+b=14.5

Step-by-step explanation:

I hope that the answer is clear

8 0

3 years ago

A rectangle measures 15 2 inches by 4 3 inches. What is its area?

IRINA_888 [86]

Answer:

65.36

Step-by-step explanation:

15.2 x 4.3 = 65.36

4 0

3 years ago

Can someone PLEASE help me solve this equation ? due soon

RideAnS [48]

$\sf{Given : 3tanx + 7 = \dfrac{2}{(1 - sinx)(1 + sinx)}}$

We know that : (a - b)(a + b) = a² - b²

$\implies \sf{3tanx + 7 = \dfrac{2}{1 - sin^2x}}$

We know that : 1 - sin²x = cos²x

$\implies \sf{3tanx + 7 = \dfrac{2}{cos^2x}}$

$\sf{\bigstar \ \ We \ know \ that : \boxed{\sf{\dfrac{1}{cos^2x} = sec^2x}}}$

$\implies \sf{3tanx + 7 = 2sec^2x}$

We know that : sec²x = 1 + tan²x

$\implies \sf{3tanx + 7 =2(1 + tan^2x)}$

$\implies \sf{2 + 2tan^2x - 3 tanx - 7 = 0}$

$\implies \sf{2tan^2x - 3 tanx - 5 = 0}$

$\implies \sf{2tan^2x - 5tanx + 2tanx - 5 = 0}$

$\implies \sf{2tanx(tanx + 1) - 5(tanx + 1) = 0}$

$\implies \sf{(tanx + 1)(2tanx - 5) = 0}$

$\implies \sf{tanx = -1 \ (or) \ tanx = \dfrac{5}{2} }$

8 0

3 years ago

180=112+9x+5. Whats the value of X and why?

vovangra [49]

Answer:x=7

Step-by-step explanation:

180=112+9x+5

Collect like terms

180-112-5=9x

63=9x

Divide both sides by 9

63/9=9x/9

7=x

x=7

5 0

4 years ago

Identify the coeficient: 6x + 19

Contact [7]

Answer:

25x

Step-by-step explanation:

6x + 9 = 25x

5 0

3 years ago

Read 2 more answers