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kvasek [131]
3 years ago
7

If Destini runs 4 km in 18 minutes. Which proportion could be used to find how many minutes it would take her to run 16 km?

Mathematics
1 answer:
Tatiana [17]3 years ago
5 0

Answer: 72 minutes

Step-by-step explanation:

Ww would use direct proportion with the formula: y = kx

where y = number of minutes

x = distance

18 = 4k

k = 18/4

k = 4.5

Therefore, the number of minutes that it would take her to run 16 km would be:

y = kx

y = 4.5 × 16

y = 72 minute

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Which expressions are equivalent to 6y-18h?
lukranit [14]

First you had to rewrite the problem with eighteen as the three times six is equal to eighteen.

=6y-3*6h

Then you factor it out by the common term of six.

=6(y-3h)

Final answer: \boxed{6(y-3h)}

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

-Charlie

5 0
3 years ago
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Elan Coil [88]

Answer:

The values for the given function f is defined by f(x)=\frac{1}{2}x is

a) f(0)=0 ,

b) f(18)=9 and

c) f(-18)=-9

Step-by-step explanation:

Given that the function f is defined by f(x)=\frac{1}{2}x

Now to find the value of f(0), f(18) and f(-18)

Now take f(0)

Put x=0 in the given function f(x)=\frac{1}{2}x we get

f(0)=\frac{1}{2}(0)

=0

Therefore f(0)=0

Put x=18 in the given function f(x)=\frac{1}{2}x we get

f(18)=\frac{1}{2}(18)

=9

Therefore f(18)=9

Put x=-18 in the given function f(x)=\frac{1}{2}x we get

f(-18)=\frac{1}{2}(-18)

=-9

Therefore f(-18)=-9

The values for the given function f is

a) f(0)=0 ,

b) f(18)=9 and

c) f(-18)=-9

4 0
3 years ago
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What is the x-coordinate of the point of intersection for the two lines below?
Brut [27]

Answer:

From the graph, it is clear that the point of intersection is:

  • (x, y) = (-4, -1)

And the x-coordinate of the point of intersection for the two lines is:

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Step-by-step explanation:

  • As we know that the solution of the system of equations is the point of intersection. Let us solve it.

Given the system of equations

\begin{bmatrix}2x+y=-9\\ 2x-5y=-3\end{bmatrix}

solving the system of equations

subtracting 2x+y = -9 from 2x-5y = -3

2x-5y=-3

-

\underline{2x+y=-9}

-6y=6

so

\begin{bmatrix}2x+y=-9\\ -6y=6\end{bmatrix}

solving for y

-6y=6

Divide both sides by -6

\frac{-6y}{-6}=\frac{6}{-6}

y=-1

\mathrm{For\:}2x+y=-9\mathrm{\:plug\:in\:}y=-1

2x-1=-9

2x=-8

Divide both sides by 2

\frac{2x}{2}=\frac{-8}{2}

x=-4

Thus, the x-coordinate of the point of intersection for the two lines below will be:

x=-4

Also, the graph is attached.

From the graph, it is clear that the point of intersection is:

  • (x, y) = (-4, -1)

And the x-coordinate of the point of intersection for the two lines is:

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5 ones + 7 thousands + 9 hundreds + 3 tens
soldi70 [24.7K]
I think that 7935 is your answer
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What is the slope-intercept equation of the line below?<br> HELP PLS
tensa zangetsu [6.8K]

Answer:

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Step-by-step explanation:

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