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goldenfox [79]
2 years ago
5

What is 3/7 - 1/4? .....

Mathematics
1 answer:
malfutka [58]2 years ago
5 0

Answer:

Exact Form: 5/28

Decimal Form: 0.17857

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Orange juice is a common breakfast drink that contains citric acid. If the hydronium ion concentration is 3.4 × 10-4 in orange j
Lelu [443]

Answer:

3.5

Step-by-step explanation:

Given : the hydronium ion concentration is 3.4*10^{-4} in orange juice

To Find: what is the pH?

Solution :

Definition of pH : pH is the negative log of the molar hydrogen ion concentration

Formula of pH : - log [H+]

Since we are given H+ =  3.4*10^{-4}

So, substituting this value in formula :

pH = - log [3.4*10^{-4}]

pH = - log [3.4*0.0001]

pH = - log [0.00034]

pH = 3.468

pH = 3.468≈3.5

Thus the pH is 3.5

8 0
3 years ago
WILL GIVE BRAINLIEST In a survey of 2,800 people who owned a certain type of​ car, 700 said they would buy that type of car agai
nirvana33 [79]

Answer:

25% of people said that they were satisfied.

Step-by-step explanation:

700 x 4 = 2,800 which means 700 is 1/4 of 2,800 and 1/4 as a percentage is 25%

5 0
3 years ago
Read 2 more answers
I need help please!!
Artyom0805 [142]

Answer:

39.27

Step-by-step explanation:

Calculate whole area of circle - pi5^2 = 78.54

Divide answer by 2 as only half of the circle is shaded - 78.54/2 = 39.27

7 0
3 years ago
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Please help me please!!
Tpy6a [65]

Answer:

Extracting out that inner right angle.

Hypotenuse = 8

Height = h

Adjacent :

=  \frac{10}{5}  = 2

Height, h :

{ \tt{h =  \sqrt{ {8}^{2}  -  {5}^{2} } }} \\ { \tt{h =  \sqrt{64 - 25} }} \\ { \tt{h =  \sqrt{39} }} \\ the \: height \: is \: { \boxed{6.2}} \: units

3 0
2 years ago
Could someone help me with this problem!:)
kow [346]

Answer:

i think it's 9 just correct me if I'm wrong

4 0
2 years ago
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