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2 years ago

What is the result of adding -2.9a t 6.8 and 4.4a - 7.3 if a=2 what is the value of the expression

Mathematics

1 answer:

oksian1 [2.3K]2 years ago

3 0

Answer:

Step-by-step explanation:

2.5

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ILL MARK BRAINLIST PLS HELP

Charra [1.4K]

Answer:

Step-by-step explanation:

Your right I think it's c

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2 years ago

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What's is the converse of the statement?If x is odd, then 2x is even.

dsp73

If you have two statements p and q and $p\Rightarrow q$ is true, then $\neg q\Rightarrow \neg p$ is also true.

In your case, statements are p - "x is odd" and q - "2x is even".

Then $\neg p$ - "x is not odd" and $\neg q$ - "2x is not even."

Hence $\neg q\Rightarrow \neg p$ sounds as: "If 2x is not even, then x is not odd".
Answer: correct choice is D.

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3 years ago

The difference between seven times a number and 9 is equal to five times

Yakvenalex [24]

Answer:

The number is 9.5

Step-by-step explanation:

Look at the picture above, it explains everything

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2 years ago

Please answer/do 3-7!! Whoever does it right, i will give brainlest! :) also, PLEASE FILL IT OUT EITHER ON PAPER/ PHONE etc. !!!

meriva

Answer:

3-7 is negitive 4 in your answer it's 3-7 = -4

Step-by-step explanation:

It's negitive four because if you subtract you will get 4 but since it's other way around. And if you do It, it will say that even if there is no negitive sign it won't change the problem because it's still the same problem.

1) 3 - 7

2) there are 3 ways to do this to get the answer:

1) 3/7

2) 7 + 3 - 4 + 3

3) now 7 + 3 is ten - 7 is 3 + 4 is 7, so then if you do 3 - 7 you get negitive four

4) now check your answer by subtracting 3 and 7

5) then you get -4

btw: ( hope this helped :) )

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2 years ago

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If 1-cos A=1/2 then find the value of sinA.

Aneli [31]

Step-by-step explanation:

$1 - \cos( \alpha ) = \frac{1}{2} \\ = > \cos( \alpha ) = 1 - \frac{1}{2} = \frac{1}{2} \\ = > \alpha = arccos( \frac{1}{2} ) =60 {}^{ \bullet} = \frac{\pi}{3} \\ then \\ \sin( \frac{\pi}{3} ) = \frac{ \sqrt{3} }{2}$

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3 years ago

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