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3 years ago

13

Can u pls help me with this question

1 answer:

ruslelena [56]3 years ago

5 0

Answer:

Step-by-step explanation:

1). $\frac{6}{9}=\frac{2}{3}$

= 2 : 3

2). 6 : 4 = $\frac{6}{4}$

= $\frac{3}{2}$

6 : 4 = 3 : 2

3). $\frac{15}{45}=\frac{1}{3}$

= 1 : 3

4). 12 : 8 = $\frac{12}{8}$

= $\frac{3}{2}$

= 3 : 2

And $\frac{18}{12}=\frac{3}{2}$ = 3:2

Therefore, 12 : 8 = $\frac{18}{12}$

5). $\frac{21}{12}=\frac{7}{4}$

= 7 : 4

6). 4 : 10 = $\frac{4}{10}$

= $\frac{2}{5}$

Therefore, equivalent ratios are,

a). 2 : 3 = $\frac{6}{9}$

b). 3 : 2 = 6 to 4

c). $\frac{15}{45}$ = 1 : 3

d). 18 to 12 = 12 to 8

e). $7:4=\frac{21}{12}$

f). $\frac{2}{5}=4:10$

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Is 7/20 equal to 0.35

andrew11 [14]

Answer:

yes it is

Step-by-step explanation:

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3 years ago

Solve: 9(x^2+1/x^2) -9(x+1/x)-52=0

julia-pushkina [17]

Answer

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Step-by-step explanation:

4 0

3 years ago

Choose the equation below that represents the line passing through the point (1, -4) with a slope of 1/2

tatiyna

For this case we have that by definition, the line equation of the slope-intersection form is given by:

$y = mx + b$

Where:

m: It's the slope

b: It is the cut-off point with the y axis

According to the statement we have:

$m = \frac {1} {2}$

Thus, the equation is of the form:

$y = \frac {1} {2} x + b$

We substitute the given point and find "b":

$-4 = \frac {1} {2} (1) + b\\-4 = \frac {1} {2} + b\\-4- \frac {1} {2} = b\\b = - \frac {9} {2}$

Finally, the equation is of the form:

$y = \frac {1} {2} x- \frac {9} {2}$

Answer:

$y = \frac {1} {2} x- \frac {9} {2}$

6 0

3 years ago

Does the table show a direct proportional relationship? If so, what is the constant of proportionality?

lesantik [10]

Answer:

C. Yes, 3.5.

Step-by-step explanation:

If there is a relationship of direct proportionality for every ordered pair of the table, then the constant of proportionality must the same for every ordered pair. The constant of proportionality ( $k$ ) is described by the following expression:

$k = \frac{y}{x}$ (1)

Where:

$x$ - Input.

$y$ - Output.

If we know that $(x_{1}, y_{1}) = (13, 45.5)$ , $(x_{2}, y_{2}) = (14, 49)$ and $(x_{3}, y_{3}) = (15, 52.5)$ , then the constants of proportionalities of each ordered pair are, respectively:

$k_{1} = \frac{y_{1}}{x_{1}}$

$k_{1} = \frac{45.5}{13}$

$k_{1} = \frac{7}{2}$

$k_{2} = \frac{y_2}{x_2}$

$k_{2} = \frac{49}{14}$

$k_{2} = \frac{7}{2}$

$k_{3} = \frac{y_{3}}{x_{3}}$

$k_{3} = \frac{52.5}{15}$

$k_{3} = \frac{7}{2}$

Since $k_{1} = k_{2} = k_{3}$ , the constant of proportionality is 3.5.

8 0

3 years ago

117,456 rounded to nearest tenth

tatuchka [14]

117,460 is the answer

4 0

3 years ago

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