All categories

3 years ago

Need help and fast.

Mathematics

2 answers:

ELEN [110]3 years ago

7 0

Step-by-step explanation:

(2-3x)=2(5x+3) has 1 solution

x-3(2+3x)=2(5x-3) has no solution

x-3(2-3x)=2(5x-3) has infinite solution

Hope this helps

Please give me Brainliest!

Evgen [1.6K]3 years ago

4 0

Answer:

Step-by-step explanation:

You might be interested in

3pt=_____ centimeters 40oz=___________lb

deff fn [24]

Not sure what pt means
the other unts are all liquid measures and cm is a measure in legnth

8oz=1 pound so
40/8=pound=5
40oz=5lb

1000ml=L
1500/1000=1.5L
1500ml=1.5L

1L=1.056qt
1.056 times 12=12.68
12L=12.68qt

5 0

3 years ago

HI decomposes into its elements according to second-order kinetics. What concentration of HI remains from an initial concentrati

Novosadov [1.4K]

Answer:

Therefore (2.30-0.03747)= 2.2625 M of HI remains from an initial concentration of 2.30 M after 4.5 hours.

Step-by-step explanation:

second order reaction: The rate of reaction proportional to the square of the concentration of reactant.

For second order reaction

$k=\frac{x}{ta(a-x)}$

K is rate constant = 1.6×10⁻³M⁻¹hr⁻¹

a = initial concentration of reactant = 2.30 M

a-x = concentration of reactant after t h

t = time = 4.5 h

Putting the values in the above equation,

$1.6\times 10^{-3}= \frac{x}{4.5 \times 2.30 \times (2.30-x)}$

$\Rightarrow 16.56 \times 10^{-3}\times (2.30-x)= x$

$\Rightarrow 16.56 \times 10^{-3}\times 2.30-16.56 \times 10^{-3}\times x= x$

$\Rightarrow (1+16.56 \times 10^{-3}) x=16.56 \times 10^{-3}\times 2.30$

$\Rightarrow x = 0.03747$

Therefore (2.30-0.03747)= 2.2625 M of HI remains from an initial concentration of 2.30 M after 4.5 hours.

4 0

4 years ago

Find the missing number.<br> 330 =<br> 22<br> Submit

ElenaW [278]

Answer:

Step-by-step explanation:

3 0

3 years ago

A number is multiplied by 5. If 5 is added to the product, you get 10. What is the number?

maria [59]

Answer:

The unknown number is 1.

Step-by-step explanation:

You have to form an expression. So let's make the unknown number as x. Firstly, a number is multiplied by 5 :

$x \times 5$

$= 5x$

Secondly, 5 is added to product and you will get 10 :

$5x + 5 = 10$

Lastly, you have to solve :

$5x + 5 = 10$

$5x = 10 - 5$

$5x = 5$

$x = 5 \div 5$

$x = 1$

4 0

3 years ago

Read 2 more answers

Pls pls help. 20 points

leonid [27]

Answer: -180

Step-by-step explanation:

8 0

3 years ago