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Zigmanuir [339]
3 years ago
11

50 POINTS

Mathematics
1 answer:
user100 [1]3 years ago
5 0

\huge \sf༆ Answer ༄

According to the question ;

{ \qquad{ \sf{ \dashrightarrow}}}  \:  \: \sf \:y \propto x

Now, let's add a constant of proportionality to replace proportionality sign with equal to :

{ \qquad{ \sf{ \dashrightarrow}}}  \:  \: \sf \:y = kx

[ where, k is proportionality constant ]

plug the value of x and y from any ordered pair in the table , for example : \sf(\dfrac{1}{5} , 2)

{ \qquad{ \sf{ \dashrightarrow}}}  \:  \: \sf \:2 = k \times  \dfrac{1}{5}

{ \qquad{ \sf{ \dashrightarrow}}}  \:  \: \sf \:k = 2 \times 5

{ \qquad{ \sf{ \dashrightarrow}}}  \:  \: \sf \:k = 10

Therefore, value of proportionality constant (k) is

\overbrace{  \underbrace{\underline{ \boxed{ \sf 10 }}}}

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Please tell me, how do i solve percentages? And yes, i know there is more than one way. Please tell me the methods to solve all
Bumek [7]
I'll give a practice problem to help explain it a bit better.

Here, let's try to solve 45% of of 60.

First, we convert the percentage into a decimal. To turn any percentage into a decimal you move the point two spaces to the left.

That means 45% as a decimal is .45.

Next, we multiply our number, 60, by the decimal .45.

60×.45=27.

That means 45% of 60 is 27.

To sum it all up, you have to get the percentage, move the decimal point two spaces to the left, and multiply it by the number you were trying to find the percentage of.

Have a wonderful day! :)
5 0
3 years ago
Comparing Order of Magnitude A biologist estimated the number of cells in a culture sample as 1.3 × 102. One week later, he look
Assoli18 [71]

Answer:

3 * 10^3 in scientific notation.

3,000 in standard notation.

Step-by-step explanation:

We divide:

3.9 *10^5 / 1.3 * 10^2

= ( 3.9/1.3) * (10^5 / 10^2)

= 3 * 10(5-2)

= 3 * 10^3.

This  equals 3 * 1,000 = 3000.

4 0
3 years ago
Read 2 more answers
Question 1. Solve using linear combination
Natali5045456 [20]
1) 4d = 24
d = 6
answer d

2) 4d = 12
d = 3
answer c

3) y = 0
ordered pair: (-5 , 0)

Hope this helps!
4 0
3 years ago
The diagonals of a kite are in the ratio 3 : 2. The area of the kite is 27cm(squared). find the length of both diagonals.
alina1380 [7]
P= 27 \ cm^2 \\ \\P=\frac{1}{2} e * f \\ \\ f =3x , \ e = 2x \\ \\27=\frac{1}{2}*2*3x \\ \\27=3x/:3

x=3 \\ \\ f =3x =3 *3= 9 \ cm \\ \\ \ e = 2x = 2*3 = 6cm



6 0
3 years ago
What is the equation for the line of reflection that maps the trapezoid onto itself?
kvv77 [185]
The line that maps a figure onto itself is a line of symmetry of the figure.

From the given trapezoid, the line of symmetry of the trapezoid is x = -2.

Therefore, the <span>equation for the line of reflection that maps the trapezoid onto itself</span> is x = -2.
6 0
3 years ago
Read 2 more answers
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