All categories

3 years ago

Please help me thank u

Mathematics

2 answers:

Wittaler [7]3 years ago

7 0

Answer:

5/10k - 3/5

Step-by-step explanation:

by fraction we know about LCM

2/5k + 1/10k - 3/5

5/10k-3/5

Svetach [21]3 years ago

4 0

Answer:

done

Step-by-step explanation:

You might be interested in

F(19) = <img src="https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7Bx%2B2%7D-%20%5Csqrt%7Bx-3%7D" id="TexFormula1" title="\frac{3}{x+2}-

Verizon [17]

Answer:

1/7 - 4

1/7 -28/7

$\frac{-27}{7}$

Step-by-step explanation:

6 0

3 years ago

Use the given equation to find the number <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B2%7D%20x%20-%2019.7%20%3D%20

ziro4ka [17]

Answer:

x = 31.2

Step-by-step explanation:

$\frac{1}{2}$ x - 19.7 = -4.1

$\frac{1}{2}$ x = 15.6 --- add 19.7 to both sides to get rid of -19.7

x = 31.2 --- multiply both sides by 2 to get rid of $\frac{1}{2}$

7 0

3 years ago

The owner of an auto repair shop studied the waiting times for customers who arrive at the shop for an oil change. The following

labwork [276]

Answer:

(d)0.6

Step-by-step explanation:

(a)Frequency Distribution

$\left|\begin{array}{c|c}$Waiting Time(in Minutes)&$Frequency\\-----------&--\\0-4&4\\5-9&8\\10-14&5\\15-19&2\\20-24&1\\--&--\\Total&20\end{array}\right|$

(b)The relative frequency distribution.

$\left|\begin{array}{c|c}$Waiting Time(in Minutes)&$Relative Frequency\\-----------&--\\0-4&4/20=0.2\\5-9&8/20=0.4\\10-14&5/20=0.25\\15-19&2/20=0.1\\20-24&1/20=0.05\\--&--\\Total&1\end{array}\right|$

(c)The cumulative frequency distribution.

$\left|\begin{array}{c|c|c}$Waiting Time(in Minutes)&$Frequency&$Cumulative Frequency\\-----------&--&---\\0-4&4&4\\5-9&8&12\\10-14&5&17\\15-19&2&19\\20-24&1&20\\--&--&--\\Total&20\end{array}\right|$

(d)The proportion of customers needing an oil change who wait 9 minutes or less.

Proportion of customers needing an oil change who wait 9 minutes or less.

$=\dfrac{12}{20} \\\\=0.6$

5 0

3 years ago

42 decreased by the product of 12 and a number is 6.

levacccp [35]

42 - 12x = 6
Solve for 6

12x = 36

x = 3

4 0

3 years ago

Question D- If the area of a square is 121 square centimeters, what is its side length?

Ipatiy [6.2K]

The formula for the area of a square is the side squared, or multiplied together.

Basically, if the side length is x, the area is x*x or x^2.

We can use that to set up an equation.

x^2=121
x=square root of 121=11

Hope this helps!

3 0

3 years ago