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3 years ago

Estimate 2,525 ÷ 64 nononononononnow

Mathematics

2 answers:

AVprozaik [17]3 years ago

7 0

Answer: 39.453125

Step-by-step explanation:

Sever21 [200]3 years ago

6 0

Answer:40

Step-by-step explanation:

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What is the value of |y|+4- y* x if x = 7 and y = -2?

irga5000 [103]

The given expression is

$|y|+4-y\cdot x$

Let's replace x = 7 and y = -2.

$\begin{gathered} |-2|+4-(-2)\cdot7 \\ 2+4+14 \\ 20 \end{gathered}$ <h2>Therefore, the value of the expression is 20.</h2>

8 0

2 years ago

In a sewage treatment plant, a large concrete tank initially contains 440,000 liters of liquid and 10,000 kg of fine suspended s

viva [34]

Answer:

$Concentration = 8.26kg/m^3$

Step-by-step explanation:

Given

$V = 440000L$ --- volume of tank

$m = 10,000 kg$ --- solid mass

$r = 40000L/hr$ --- outflow rate

Required

Determine the concentration at the end of 4 hours

First, calculate the amount of liquid that has been replaced at the end of the 4 hours.

$Amount = r * Time$

$Amount = 40000L/hr * 4hr$

$Amount = 40000L * 4$

$Amount = 160000L$

This implies that, over the 4 hours; The tank has 160000 liters of liquid out of 440000 liters were replaced

Calculate the ratio of the liquid replaced.

$Ratio = \frac{Amount}{Volume}$

$Ratio = \frac{160000L}{440000L}$

$Ratio = \frac{16}{44}$

$Ratio = \frac{4}{11}$

Next, calculate the amount of solid left.

$Amount (Solid)= Ratio * m$

$Amount (Solid)= \frac{4}{11} * 10000kg$

$Amount (Solid)= \frac{40000}{11}kg$

$Amount (Solid)= 3636kg$

Lastly, the concentration is calculated as:

$Concentration = \frac{Amount (Solid)}{Volume}$

$Concentration = \frac{3636kg}{440000L}$

Convert L to cubic meters

$Concentration = \frac{3636kg}{440000* 0.001m^3}$

$Concentration = \frac{3636kg}{440m^3}$

$Concentration = 8.26kg/m^3$

3 0

3 years ago

Help please this is my last question left

ella [17]

Answer:

10a and 5a+2a+3a

Step-by-step explanation:

6a + 4a = 10a

10a = 10a

9a is not equal to 10a

10+a is not equal to 10a

5a+2a+3a = 10a

6a - 4a is not equal to 10a

a^10 is not equal to 10a

Hope this helps! :)

7 0

3 years ago

What is the y-value when x equals 7?<br> y = 310 - 25(x)

monitta

Answer:

y=135

Step-by-step explanation:

To find the solution, we must put 7 in for x and solve, as shown:

$y=310-(25)(7)\\y=310-175\\y=135$

6 0

3 years ago

Read 2 more answers

Identify the<br> characteristics<br> of exponential<br> functions.

Masteriza [31]

Answer:

The graph passes through the point (0,1)

The domain is all real numbers.

The range is y>0.

The graph is decreasing.

The graph is asymptotic to the x-axis as x approaches positive infinity.

(These are just some of them by the way)

Step-by-step explanation:

5 0

3 years ago