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Naya [18.7K]
3 years ago
11

Hey guys plz help meeethe answers have to be in numbers.​

Mathematics
1 answer:
Licemer1 [7]3 years ago
7 0

Answer:

\overrightarrow{AB}=\frac{-9}{-4}

\overrightarrow{CD}=\frac{-5}{4}

Step-by-step explanation:

A vector quantity is represented by (\frac{y}{x})

where y = y-coordinate and x = x-coordinate

Since vector AB represents a vector in 3rd quadrant,

It starts from point A and ends at B,

Therefore, coordinates of B are (-9, -4)

\overrightarrow{AB} = (\frac{-9}{-4})

Similarly vector CD starts with C and ends at D in the 2nd quadrant,

Therefore coordinates of D will be (-5, 4)

\overrightarrow{CD}=\frac{-5}{4}

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A certain forest covers an area of 2,000 square kilometers. Suppose that each year this area decreases by 6%. What is the functi
Trava [24]

The question gives you the formula to use, but it's printed wrong.
The 'x' is an exponent after the (1 + r).

All you have to do is take the formula, and write the numbers into it
that are also given.

The key thing to spot is that the forest is <u><em>decreasing</em></u>, so the 'r' is <u>negative</u>,
just as if you had money in a savings account and every year the bank took
6% <u>out</u> of it.

So the formula to use is       f(x)  =  P (1 + r) ^x

P = 2000
r = -0.06
                        f(x)  =  2000 (1 - 0.06)^x
                               =  <em>2000 (0.94)^x</em>

The amount left after 12 years is
        
                                   2000 (0.94)¹² =

                                   2000 (0.476)  =<em>  951.8 square kilometers</em>.
                  
8 0
3 years ago
Read 2 more answers
Can someone help me with this
sweet-ann [11.9K]
As this is a fraction, we need to find values where the denominator is equal to 0.

b^2-2b-8=0
(b-4)(b+2)
b=4 \vee b=-2

So the answer is B.
4 0
3 years ago
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Solve the equation<br> 1/2(2x-10)=4
andriy [413]
X = 9. Happy to help!
8 0
3 years ago
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Can someone help me plz ​
nata0808 [166]

Answer: 170

Step-by-step explanation:

t r is 90 and 82 and it = 172 just round that and you have 170

5 0
3 years ago
How do I solve this problem
densk [106]
You would put 6 in for k and 2 in for c, making it "5*6-20+8", which equals 18. Hope this helps! :)
5 0
3 years ago
Read 2 more answers
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