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Feliz [49]
2 years ago
6

Ned is driving at 72km/h, at this rate how long (in hours and minutes) will it take him to drive 210km

Mathematics
1 answer:
beks73 [17]2 years ago
5 0

Answer:

2 hours 55 minutes

Step-by-step explanation:

calculate time (T) using the relationship

T = \frac{D}{S} ( D is distance , S is average speed )

T = \frac{210}{72} = 2.9166... hours

to convert to hours and minutes multiply the decimal part by 60 , that is

0.9166.. × 60 = 55 minutes

then time taken to drive 210 Km is 2 hours 55 minutes

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frutty [35]

\sf{\longrightarrow20000 \times  \frac{9}{100}  \times  \frac{7.5}{12}}

\sf{\longrightarrow200 \: \times 9 \times  \frac{7.5}{12}}

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\sf{\longrightarrow50 \times 22.5}

{\longrightarrow\large\boxed{\sf1125.}}

3 0
3 years ago
Read 2 more answers
Which of the following is the product of the rational expressions shown below?
Vika [28.1K]

Answer:

B

Step-by-step explanation:

<em>a/b × d/c = a×d / b×</em><em>c</em>

Multiply the numerators 1st.

x × x = x^2

Next is the Denominator.

x+3 × x+2

now try to multiply each term of the 1st expression with the 2nd.

x × x + x × 2 + 3 × x + 6

x^2 + 2x + 3x + 6

x^2 + 5x + 6

Write the numerator & denominator in their respective places.

x^2 / x^2 + 5x + 6

7 0
3 years ago
The relationship between a bacteria population p, in thousands, and time d, in days, since it was measured to be 1,000 can be re
Assoli18 [71]

d = log₂p represents a logarithmic function, The expression log₂(10) tells us when the population reaches 10,000 and the equation 7 = log₂(128) tells us that the population reaches 128,000 in 7 days.

<h3>What is an exponential function?</h3>

An exponential function is in the form:

y = abˣ

Where a is the initial value of y and b is the multiplication factor.

Let p represent the bacteria population in thousand after d days.

Since each day, the bacteria population grows by a factor of 2, hence:

p=2^d

Hence, d = log₂p represents a logarithmic function

The expression log₂(10) tells us when the population reaches 10,000 and the equation 7 = log₂(128) tells us that the population reaches 128,000 in 7 days.

Find out more on exponential function at: brainly.com/question/12940982

8 0
3 years ago
Write the equation of a line with a slope of 5/2 and passes through the point (2,3)
tamaranim1 [39]

Answer:

         y - 3 = ⁵/₂(x - 2)     {the point-slope form of the equation}

         y = ⁵/₂x - 2            {the slope-intercept form of the equation}

         5x - 2y = 4           {the standard form of the equation}

Step-by-step explanation:

The point-slope form of equation is: y - y₀ = m(x - x₀), where (x₀, y₀) is any point the line passes through and m is the slope.

m = ⁵/₂

(2, 3)    ⇒   x₀ = 2,  y₀ = 3

So, the point-slope form of the equation:

y - 3 = ⁵/₂(x - 2)

Therefore:

y - 3 =  ⁵/₂x - 5         {add 3 to both sides}

y = ⁵/₂x - 2              ←  the slope-intercept form of the equation

-⁵/₂x + y = - 2           {multiply both sides by (-2)}

5x - 2y = 4              ←  the standard form of the equation

5 0
3 years ago
Which of the following terms best describes three points that all lie in a straight line
sergiy2304 [10]
You have three colinear points

7 0
3 years ago
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