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stealth61 [152]
3 years ago
10

Please help me with 1-4​

Mathematics
1 answer:
asambeis [7]3 years ago
5 0

well ik the angle of 1 and 2 are right angles and number 4 is 180° but I'm not sure ab number 2 sorry i.d.k if I helped someone might be able to explain better and help

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An exercise machine with an original selling price of $1225 is marked down by 20%. What is the sale price of the exercise​ machi
cricket20 [7]
980 I think for 20% off of 1225
5 0
2 years ago
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Each plotted plant costs$4.75, each shrub costs$14.50 .
eduard
8 it is this !!!!!!!!!!!!!!!!
8 0
3 years ago
6r+7=13+7r show work please​
yulyashka [42]

Answer:

r=-6

Step-by-step explanation:

6r-7r=13-7

-r=6

r=-6

8 0
3 years ago
If PQ=8 and Q lies at -13 where could P be located?
choli [55]

Answer:

In the given figure the point on segment PQ is twice as from P as from Q is. What is the point? Ans is (2,1).

Step-by-step explanation:

There is really no need to use any quadratics or roots.

( Consider the same problem on the plain number line first.  )

How do you find the number between 2 and 5 which is twice as far from 2 as from 5?

You take their difference, which is 3. Now splitting this distance by ratio 2:1 means the first distance is two thirds, the second is one third, so we get

4=2+23(5−2)

It works completely the same with geometric points (using vector operations), just linear interpolation: Call the result R, then

R=P+23(Q−P)

so in your case we get

R=(0,−1)+23(3,3)=(2,1)

Why does this work for 2D-distances as well, even if there seem to be roots involved? Because vector length behaves linearly after all! (meaning |t⋅a⃗ |=t|a⃗ | for any positive scalar t)

Edit: We'll try to divide a distance s into parts a and b such that a is twice as long as b. So it's a=2b and we get

s=a+b=2b+b=3b

⇔b=13s⇒a=23s

7 0
3 years ago
18 ➗ (-4 1/2) with explanation​
slamgirl [31]

Answer:

-4

Step-by-step explanation:

If anything the first thing you would want to do is covert your fraction so a decimal. (-4 1/2) as a decimal is -4.50. From there it would be easier to divide. to get an answer of -4

8 0
2 years ago
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