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3 years ago

Calculate the mass of NaOH in 0.2 moles of NaOH

Mathematics

1 answer:

masya89 [10]3 years ago

6 0

Answer:

0.2M i.e

Step-by-step explanation:

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Solve for x in the equation

Viktor [21]

Answer:

${x}^{2} + 2x + 1 = 17 \\ {x}^{2} + 2x - 16 = 0 \\ x = \frac{ - b± \sqrt{ {b}^{2} - 4ac} }{2a} \\ x = \frac{ - 2± \sqrt{68} }{2} \\ x = \frac{ - 2±2 \sqrt{17} }{2 } \\ x = - 1± \sqrt{17}$

5 0

3 years ago

Please answer this correctly

viva [34]

Answer:

2/5

Step-by-step explanation:

Let's find the probability of each condition first.

For P(4), there is only one option: 4. This is 1 out of 5.

For P(even), this includes 4 and 6. However, we already had 4 from our last condition so we can remove this option. This is again 1 out of 5.

Adding them together, we will get 2/5.

The answer is 2/5

3 0

3 years ago

Allen drove 90 miles in 2 and 1/4 hours at a constand speed, how many miles did he drive in one hour.

Bumek [7]

Use property of proportion:

miles time (hs)
90 2.25
x 1

x = 90 ÷ 2.25
x = 40 miles

8 0

3 years ago

A 5 metre long ladder is placed against a wall. It reaches

Juliette [100K]

<h3>given</h3>

5m long ladder placed against 4.3m up the wall.

the angle between the ladder and the ground.

<h3>solution:</h3>

Based on the given conditions, formulate:

sin⁡x=4.3÷5

Evaluate the equation/expression:

x= 1.03527 or 2.10632

x= 1.03527°

or x= 2.10632°

6 0

2 years ago

I need to know how to turn the fraction 25 over 8 into a fraction

Maslowich

If you mean turn 25/8 into a decimal its 3.125 but if u need it in a mixed fraction its 3 1/8

3 0

3 years ago