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erastova [34]
3 years ago
11

The equation for the pH of a substance is pH = -log[H'], where H+ is the concentration of hydrogen ions. A basic

Mathematics
2 answers:
Oksanka [162]3 years ago
8 0

Answer:

it's b.

Step-by-step explanation:

scoundrel [369]3 years ago
7 0

Answer:

9 (approximately)

Step-by-step explanation:

Approximate difference

= pH of basic solution - pH of acidic solution

= 11.2 - 2.4

= 8.8

= 9 (approximately)

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Together, teammates Pedro and Ricky got 2689 base hits last season. Pedro had 285 more hits than Ricky. How many hits did each p
STALIN [3.7K]
Pedro had 1487 hits
Ricky had 1202 hits

2688/2=1344.5
285/2=142.5
1344.5-142.5=1202 (Ricky)
1344.5+142.5=1487 (Pedro)
1487-1202=285
1487+1202=2689
7 0
3 years ago
An exponential function is graphed for all real numbers. This includes which of the following sets of numbers?
anygoal [31]

<span>In addition to linear, quadratic, rational, and radical functions, there are exponential functions. Exponential functions have the form f(x) = <span>bx</span>, where b > 0 and b ≠ 1. Just as in any exponential expression, b is called the base and x is called the exponent.</span>

 

<span>An example of an exponential function is the growth of bacteria. Some bacteria double every hour. If you start with 1 bacterium and it doubles every hour, you will have 2x bacteria after x hours. This can be written as f(x) = 2x.</span>

 

<span>Before you start,   f(0) = 2<span>0 </span>= 1</span>

<span>After 1 hour           f(1) = 21 = 2</span>

<span>In 2 hours              f(2) = 22 = 4</span>

<span>In 3 hours              f(3) = 23 = 8</span>

and so on.

 

 

<span>With the definition f(x) = <span>bx</span> and the restrictions that b > 0 and that b ≠ 1, the domain of an exponential function is the set of all real numbers. The range is the set of all positive real numbers. The following graph shows f(x) = 2x.</span>

<span> </span>

8 0
3 years ago
I need help my teacher's note didn't help at all please
Roman55 [17]

Answer:

1.0472

Step-by-step explanation:

60

= 60 × π/180 rad

= π/3 rad

Hope this helps! :)

8 0
3 years ago
You need 1 1/4 cups of sugar to make 20 cookiesto make 6 cookies, you will need ___ cups of sugar.
Evgesh-ka [11]
Use the rule of 3 simples 

hope i understand it right that there is 1 integer and 1/4 cups of sugar or can being 11/4 cups too 

1 integer 1/4 = 5/4 

5/4 cups of sugar for 20 cookies 
 x -------------------- for 6 cookies
----------------------------------------------

 x = 6*(5/4) / 20 = (30/4)/20 = 30/80 = 3/8 cups of sugar for 6 cookies 

hope helped 


6 0
3 years ago
Find the quotient. Write your answer in standard form. : 3-i/3+i
s344n2d4d5 [400]
The answer is <span>C. 4/5 - 3/5 i
</span>
\frac{3-i}{3+i} = \frac{(3-i)(3-i)}{(3+i)(3-i)} \\  \\ &#10;(a+b)(a-b) =  a^{2} -b^{2}  \\  \\ &#10;\frac{(3-i)(3-i)}{(3+i)(3-i)}= \frac{ (3-i)^{2} }{3^{2}-i^{2} } \\  \\ &#10;(a-b)^{2} =a^{2}-2ab+b^{2} \\  \\ &#10; \frac{ (3-i)^{2} }{3^{2}-i^{2} } = \frac{3^{2}-2*3*i+i^{2}  }{3^{2}-i^{2} } = \frac{9-6i+i^{2}}{9-i^{2}}  \\  \\ &#10;i =  \sqrt{-1}  \\ i^{2}=-1 \\  \\ &#10;\frac{9-6i+i^{2}}{9-i^{2}} = \frac{9-6i-1}{9+1} = \frac{8-6i}{10}= \frac{8}{10}- \frac{6i}{10}= \frac{4}{5}- \frac{3}{5}i
8 0
3 years ago
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