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2 years ago

F(x) =-2x-4 find x if f(x)=14

Mathematics

1 answer:

marusya05 [52]2 years ago

6 0

Answer:

14=-2x-4

18=-2x

x=-9

Hope This Helps!!!

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Dina and Masha start cycling on a 20 km bike path at the same time. When Dina reaches the end of the path, Masha still has 4 km

sammy [17]

Answer:

0.5 hour

Step-by-step explanation:

Given

Speed of Dina = 10 km/h

Distance = 20 km

So the time Dina taken to complete the track is:

$Speed=\frac{distance}{time}\\10=\frac{20}{time}\\time=\frac{20}{10}\\ time=2\ hours$

The time taken by Dina is 2 hours. As masha started with dina but she was 4 km of the path left to cycle,

her distance covered in 2 hours was:

$Distance\ covered\ by\ Masha\ in\ 2\ hours=20-4\\=16 km$

So we know the time and distance:

Now,

$Speed\ of\ Masha=\frac{distance}{time}\\ =\frac{16}{2}\\ =8\ kilometer\ per\ hour$

We have to calculate the time that will be needed by MAsha to complete the track:

As we know the speed and remaining distance

$Speed=\frac{distance}{time}\\8=\frac{4}{time}\\ time=\frac{4}{8}\\time=0.5\ hours$

Masha needs 0.5 hour to complete the track ..

7 0

2 years ago

Read 2 more answers

1.) The equation for the pH of a substance is pH = –log[H+], where H+ is the concentration of hydrogen ions. What is the approxi

const2013 [10]

Answer:

c .3.3

Step-by-step explanation:

pH is the negative log of the molar hydrogen ion concentration.The equation to calculate pH is;

pH = -log10[H+]

pH = -log10(5.0 x 10-4)

pH = 3.30

6 0

2 years ago

Read 2 more answers

Find the volume of the cone. Round your answer to the nearest hundredth.

noname [10]

Answer:

can we get the figure plz

7 0

2 years ago

The loudness, L, measured in decibels (Db), of a sound intensity, I, measured in watts per square meter, is defined as

nata0808 [166]

$\\ \rm\dashrightarrow B=10log\dfrac{I}{I_o}$

$\\ \rm\dashrightarrow B=10\log\dfrac{10^{-7}}{10^{-12}}$

$\\ \rm\dashrightarrow B=10log10^5$

$\\ \rm\dashrightarrow B=10\times 5log10$

$\\ \rm\dashrightarrow B=10(5)$

$\\ \rm\dashrightarrow B=50dB$

5 0

1 year ago

Read 2 more answers

Please help! Correct answer only!

Oksanka [162]

Answer:

<em>Probability ≈ 0.0833</em>

Step-by-step explanation:

Consider steps below;

$Total Possible Outcomes - 9C6,\\\\9! / 6! ( 9 - 6 )!,\\1 * 2 * 3 * 4 * 5 * 6 * 7 * 8 * 9 / ( 1 * 2 * 3 * 4 * 5 * 6)( 1 * 2 * 3 ),\\\\362,880 / 720 * 6 = Combinations - 84,\\\\$

$Number Of Outcomes - 7C6,\\\\7! / 6! ( 7 - 6 )!,\\1 * 2 * 3 * 4 * 5 * 6 *7/ ( 1 * 2 * 3 * 4 * 5 * 6 ) ( 1 ),\\\\Outcomes - 7$

$Conclusion ; Solution - 7 / 84 = ( About ) 0.0833\\Hope That Helps!$

<em>Solution; Probability ≈ 0.0833</em>

4 0

3 years ago