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Nataliya [291]
3 years ago
13

Slope= -3; (1, 2) is on the line

Mathematics
1 answer:
wolverine [178]3 years ago
7 0

Step-by-step explanation:

By 2 point form

y-y1= m(x-x1)

y-2 = -3(x-1)

y-2=-3x+3

3x+y=5... this is the required line

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HELP ME PWEASEE
avanturin [10]

Answer:

b=\dfrac{1}{5}a.

Step-by-step explanation:

We need to write an  equation for the amount of chemical B as a function of the amount of chemical A.

b=f(a)

b\propto a

b=ka     ...(1)

where, k is constant of proportionality.

It is given that fifteen grams of chemical A is used to produce 3 grams of chemical B. It means a=15 and b=3.

Substitute a=15 and b=3 in (1).

3=k(15)

k=\dfrac{3}{15}=\dfrac{1}{5}

Substitute k=\dfrac{1}{5} in (1).

b=\dfrac{1}{5}a

Therefore, the required function is b=\dfrac{1}{5}a.

8 0
4 years ago
55 is 40% of what number
Nutka1998 [239]
First of all, you must change 40% into a decimal by multiplying by 100⇒.40
Then you divide 55 by .40
55÷.40=137.5
Therefore, 55 is 40% of 137.5
6 0
4 years ago
Read 2 more answers
Corey invested $1500 when he was a freshman in order to save for college. If he chooses to invest it in an account that earns 3.
Tcecarenko [31]

Answer: He will have $1721.28. after 4 years.

Step-by-step explanation:

The formula we use to find the compounded amount A is :

A=P(1+r)^t, where P= principal value, r = rate of interest , t= time.

As per given , we have

P=$1500  , r=3.5%=0.035 , t= 4 years

Money he will have after 4 years = 1500(1+0.035)^4

=1500(1.035)^4\\\\=1721.28450094\approx1721.28

Hence, he will have $1721.28. after 4 years.

4 0
3 years ago
Would the missing value be 12cm?
nika2105 [10]

Answer: The missing value, y = 24

Step-by-step explanation:

The triangles are similar, so the sides are proportional.

The length of side BD is 10. The segment AD is also 10. Add them to get the length of side AB.

DE is 12  

12:10 = y:20 . 20/10 = 2    2×12 = 24

7 0
3 years ago
What is the significance of defining communication as a process?a.Meaning is interpreted in light of past and present experience
earnstyle [38]

Answer:

a. Meaning is interpreted in light of past and present experiences as well as expectations for the future

Step-by-step explanation:

  • The significance of communication lies in the fact that its an act of two or more person that conveys the information to one another and this content can be facts ideas or even the opinions and concepts.
  • Due to this we can work together and thus understand the meaning in the context of the past, the present and the future terms through the interpretation and experiences.
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3 years ago
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