To the nearest tenth, what is the volume of this right triangular prism?

1. Can cross multiplication be used to solve this problem? Why or why not?<br><br><br> HELP

garri49 [273]

Answer:

Step-by-step explanation:

Cross multiplication can be used but not in the beginning. First x should be isolated.

$3 +\frac{5}{x}=\frac{7}{x}\\\\$

Now subtract $\frac{5}{x}$ from both sides

$3 = \frac{7}{x}-\frac{5}{x}\\\\3=\frac{7-5}{x}\\\\3=\frac{2}{x}$

In this stage, cross multiplication can be used.

$\frac{3}{1}=\frac{2}{x}\\\\3*x=2*1\\\\x = \frac{2}{3}$

6 0

3 years ago

Read 2 more answers

Please pleas help me!!

sasho [114]

Answer:

x = 3 and y = 1

Step-by-step explanation:

The given equations are :

6x + 14y = 32 ...(1)

6x - 14y = 4 .....(2)

Add equation (1) and (2) :

6x + 14y + 6x - 14y = 32 + 4

12x = 36

x = 3

Put the value of x in equation (1)

6(3) + 14y = 32

18 + 14y = 32

14y = 32-18

14y = 14

y = 1

Hence, the value of x is 3 and y is 1.

5 0

3 years ago

SUppose the total cost C(x) to manufacture a quantity x of insecticide (in hundreds of liters) is given by

Hitman42 [59]

Answer:

a) $C(x)$ is increasing in two regions: (i) $(+\infty, 8\,s)$ and (ii) $(10\,s,+\infty)$ .

b) $C(x)$ decreases in $(8\,s, 10\,s)$ .

Step-by-step explanation:

Let $C(x) = x^{3}-27\cdot x^{2}+240\cdot x +850$ , where $x$ is the quantity of insecticide, measured in hundreds of liters, and $C(x)$ is the total manufacturing cost as a function of the quantity of the insecticide, measured in US dollars. A possible approach to determine which regions of $C(x)$ are decreasing and increasing by means of the first derivative and graphing tools. The first derivative of the function is:

$C'(x) = 3\cdot x^{2}-54\cdot x+240$ (1)

Please notice that regions where C(x) is increasing has $C'(x) > 0$ , whereas $C'(x) < 0$ when $C(x) < 0$ .

We notice that $C(x)$ is increasing in two regions: (i) $(+\infty, 8\,s)$ and (ii) $(10\,s,+\infty)$ . Besides, $C(x)$ decreases in $(8\,s, 10\,s)$ .

6 0

3 years ago

Basic Stat Psy

luda_lava [24]

Answer with explanation:

The Meaning of the word Random is , selecting instantaneously from a group of Population for the study.

Suppose you are in a room where mathematics students are studying.You selected few week and few quite intelligent among them for a test to check how whole group of maths student is performing in maths.

So, Selecting participants at random will, on average, lead to samples that are...........

Option B.→ Representative of the population from which they were sampled.

6 0

4 years ago

X is greater than or equal to -7

Amanda [17]

Answer:

x ≥ -7

Step-by-step explanation:

greater than or equal to ≥

x ≥ -7

5 0

3 years ago