Answer:
2.5*10^-8 for sea water, 3.16*10^-11 for milk of magnesium, and 790 times greater
Step-by-step explanation:
We're trying to find the concentration of H+ in the solution using the pH, so
let's define pH first.
pH=-log(H+)
This equation can be re-written as
H+ = 10^(-pH), or H+ = 1/(10^pH)
The pH of sea water is 7.6, so the concentration of H+ in sea water is 10^(-7.6), which is about 2.5*10^-8
The pH of milk of magnesium is 10.5, so the concentration of H+ in milk of magnesium is 10^(-10.5), which is about 3.16*10^-11
To compare how much more the concentration of the hydrogen ion is, we just divide
(2.5*10^-8)/(3.16*10^-11) = 791, or 790 with sig figs.
State six ordered pairs for this function
f(x)=.5x+3
(0,3) - The y-int, after you can just add 5 to the y-coord for each added 1 to the x-coord.
(1,8)
(2,13)
(3,18)
(4,23)
(5,28)
Sientific notation (please help!)
√5
You know that √4 = 2
so √5 > 2
2.5 * 2.5 = 6.25,
√6.25 = 2.5
so √5 in between 2 & 2.5
2 < n < 2.5
π/3
π/3 ≈ 3.14/3
3/3 = 1
4.5/3 = 1.5
π is in between 3 & 4.5
1 < n < 1.5
√3
√2.25 = 1.5
√4 = 2
√3 is in between
1.5 < n < 2
Hope this helped!
A bookstore has 120 science fiction books. It has 30% fewer mysteries than science
fiction books. It has 25% more biographies than mysteries. How many biographies
are in the bookstore? Show your work.
Answer:
105
Step-by-step explanation:
Explanation is in photo
Question 1 – A two-mass (pulley) system begins in the initial configuration shown in the figure. Once this system is allowed to
move, the cart will move to the right and the suspended mass will fall with the same (magnitude of) acceleration. Determine this
acceleration, A, of this system, and the force in the cable, F, accurate to 3 sig. dig.
Assume the pulley and cable has no mass.
Answer:
the suspended mass will fall with the same (magnitude of) acceleration. Determine this
accelerat
Step-by-step explanation:
Which expression is equivalent to 4/5x + 1 4/5
A 1/5(4x +1)
B 2/5(2x + 3)
C 4/5 (x + 2)
D 5/4 (x + 1)
There is none, but the closest is C.
It should be: 4/5( x + 2.25)
4/5 x x = 4/5x
4/5 x 2.25 = 9/5 (or 1 4/5)
(4 x? = 9) ==> 2.25
Step-by-step explanation:
A) 4/5 x + 1/5
B) 4/5x + 6/5 (or 1 1/5)
C) 4/5x + 8/5 (or 1 3/5)
D) 5/4 x + 5/4 (or 1 1/4)
Hope this helps!
can someone help me with this please
perspective
I hope this helps you
:)
A rectangular pool is 25 meters
long and 10 meters wide. What
is the perimeter of the pool?
Melissa deposits $5000 into an account that pays simple interest at a rate of 4% per year. How much interest will she be paid in the first 2 years?
Answer:
$400 is the intrest she will pay in the first 2 yrs
Step-by-step explanation:
principal (p) = 5000
time (t) = 2yrs
rate (r) = 4%
Now,
Intrest(I) = p×t×r/100
= 5000×2×4/100
= 400$
Find the area of the shaded region.
Answer:
3316
Step-by-step explanation:
Hope it will help you
what is the 5th grade meaning of congruent
A movie is 9.75 seconds long.
Describe a situation related to this movie that could be a represented by the expression 9.75 / 2.5
Answer:
Step-by-step explanation: Maybe you could try:
A movie is 9.75 seconds long and each 2.5 seconds there is an ad so how many ads are there during the movie?
3. Suppose a retail business sale its commodities at a margin of 25% on all items purchased and sold. Moreover the company uses 5% commission as selling expense and Birr 12,000 as a Fixed Cost, then Find the Breakeven revenue for the retail business after developing the equation
The Breakeven revenue for the retail business is Birr 12,500
What is breakeven?
Breakeven is the point at which the revenue is equals to the cost, hence the profit is zero.
Revenue = Cost
Let x represent the number of items sold, hence:
Revenue = (100% + 25%) of x = 1.25x
Cost = 5% of x + 12000 = 0.05x + 12000
At breakeven:
1.25x = 0.05x + 12000
x = 10000
Hence:
Revenue = 1.25(10000) = Birr 12,500
The Breakeven revenue for the retail business is Birr 12,500
Find out more on breakeven at: https://brainly.com/question/9212451
Which expression is equivalent to 1/²
Or³
o po
o 12
0,27
Answer:
[tex]r^6[/tex]
Step-by-step explanation:
Hello!
Using the exponent rule [tex]\frac{a^b}{a^c} = a^{b-c}[/tex], we can simplify this expression.
Simplify:
[tex]\frac{r^9}{r^3}[/tex][tex]r^{9-3}[/tex][tex]r^6[/tex]The solution is [tex]r^6[/tex]
Easy math 2 questions
I only know question 1: 8 inches.
Also, don't delete this.
It's helpful to certain people with the same problem.
Answer:
For problem 11, Q is 16 degrees
For problem 12 I think it is 8 inches
Step-by-step explanation:
What is the limit on the number of members in a limited liability company? There is no limit to the number of members in a limited liability company.
please help i will give brainliest
Answer:
[D] 1/14
Step-by-step explanation:
Given that:
What is the probability of picking an orange marble and flipping tails?
Solution:
First let see how many orange marbles are there:
As we can see there is 1 orange marble out of 7 total. The probability of picking an orange marble is 1/7.
Now let see how many side a coin have:
As we can see the probability of flipping tails is 1/2 because 1 side is tails out of 2 sides total.
Now multiply both together:
(1/7)× (1/2) = (1×1)/(7×2) = 1/14
This represents the probability of getting an orange marble and flipping tails.
In additionally 1/14 can't be simplify anymore.
Kavinsky
Answer:
[D] 1/14
Step-by-step explanation:
Knowing that there are 5 purple marbles, 1 brown marble, 1 orange marble. Since, on the given question all we need to know is the total marbles and the orange marbles.
Which the probability is 1/7
Now for the coin.
Knowing that there are two sides on a coin
Heads and tails (1/2)
Which is only 1/2 also known as 50% probability.
Now multiply straight across:
1/2 × 1/7
⇒ 1 × 1 = 1
⇒ 2 × 7 = 14
Thus, the answer is 1/14
can't be farther simplify.
[RevyBreeze]
If the data for the heights of players on a basketball team is skewed right, which statistical measure represents the spread of the data best?
A. Interquartile Range
B. Mean
C. Median
D. Range
Answer:
Median
Step-by-step explanation:
I know that you can't do Range, since it's skewed right.
The mean can't be it since it's also not representative when it's skewed right.
I'd say Median, or IQR at first glance but if you look at a graph, the IQR might follow with the skewed and move over a bit.
That leaves Median.
The correct statistical measure which represents the spread of the data best is, Median.
Given that;
The data for the heights of players on a basketball team is skewed right.
Since, We know that;
For the data for the heights of players on a basketball team is skewed right,
We can use Median for the spread of the data best.
Hence, The correct statistical measure which represents the spread of the data best is, Median.
Learn more about the median visit:
https://brainly.com/question/26177250
#SPJ2
40 points for this question!!!
Answer:
Never
Step-by-step explanation:
It should be never since as the value of x increases, so does y.
If the y value increases as x increases, the function is said to be increasing.
If the y value decreases as x increases, the function is said to be decreasing.
how many mL of normal saline should be added to 50mL of hydrogen peroxide to create a solution that is 5/8 strength?
An individual is selling tickets for a new movie that just came out. The first night the individual sold 45 Senior tickets and 92 Adult tickets. The second night, the individual sold 26 Senior tickets and 45 Adult tickets. Which night did the individual sell a higher ratio of Senior tickets to Adult tickets?
Step-by-step explanation:
the ratio senior to adult tickets on the first night :
45/92
the ratio on the second night :
26/45
which ratio is higher ? that means we have to determine which fraction is bigger.
the simplest and fastest way to compare them is to bring them to the same denominator (bottom part).
and the simplest way to do that is simply by multiplying the numerator and denominator of each fraction by the denominator of the other fraction :
45/92 × 45/45 = 2025 / 4140
26/45 × 92/92 = 2392 / 4140 (this is therefore bigger)
so, the ratio on the second night is higher.
Use the quadratic formula to solve for x.
3x2 + 2x - 6 = 0
Answer:
x = 1/3 (sqrt(19) - 1) or x = (1/3 (-1 - sqrt(19)))
Step-by-step explanation:
Solve for x over the real numbers:
3 x^2 + 2 x - 6 = 0
Using the quadratic formula, solve for x.
x = (-2 ± sqrt(2^2 - 4×3 (-6)))/(2×3) = (-2 ± sqrt(4 + 72))/6 = (-2 ± sqrt(76))/6:
x = (-2 + sqrt(76))/6 or x = (-2 - sqrt(76))/6
Simplify radicals.
sqrt(76) = sqrt(4×19) = sqrt(2^2×19) = 2sqrt(19):
x = (2 sqrt(19) - 2)/6 or x = (-2 sqrt(19) - 2)/6
Factor the greatest common divisor (gcd) of -2, 2 sqrt(19) and 6 from -2 + 2 sqrt(19).
Factor 2 from -2 + 2 sqrt(19) giving 2 (sqrt(19) - 1):
x = 1/6(2 (sqrt(19) - 1)) or x = (-2 sqrt(19) - 2)/6
In (2 (sqrt(19) - 1))/6, divide 6 in the denominator by 2 in the numerator.
(2 (sqrt(19) - 1))/6 = (2 (sqrt(19) - 1))/(2×3) = (sqrt(19) - 1)/3:
x = (1/3 (sqrt(19) - 1)) or x = (-2 sqrt(19) - 2)/6
Factor the greatest common divisor (gcd) of -2, -2 sqrt(19) and 6 from -2 - 2 sqrt(19).
Factor 2 from -2 - 2 sqrt(19) giving 2 (-sqrt(19) - 1):
x = 1/3 (sqrt(19) - 1) or x = 1/6(2 (-1 - sqrt(19)))
In (2 (-sqrt(19) - 1))/6, divide 6 in the denominator by 2 in the numerator.
(2 (-sqrt(19) - 1))/6 = (2 (-sqrt(19) - 1))/(2×3) = (-sqrt(19) - 1)/3:
Answer: x = 1/3 (sqrt(19) - 1) or x = (1/3 (-1 - sqrt(19)))
A researcher is studying the growth of bacteria. He starts with 260 of the bacteria. It grows continuously at a rate of 1% per hour. How many bacteria will there be in 6 hours?
Find the distance between the two points in simplest radical form.
(-8,3) and (-2,5)
Here we would be using distance formula to calculate the distance between those two points.
Points are,
(-8,3) (-2,5)★ Distance Formula :
[tex]\huge \large \boxed{\sf{{d \: = \: \sqrt{(x _{2} - x _{1}) {}^{2} \: + \: (y _{2} - y _{1}) {}^{2} }}}} \: \red\bigstar[/tex]We have :
x1 = -8 x2 = -2 y1 = 3 y2 = -5Substituting the values :
Refer the attachment.Additional Information :Centroid of a triangle :-
[tex]\boxed{ \sf{Centroid \: = \: \dfrac{x_1 \: + \: x_2 \: + \: x_3}{3} }} \: \pink\bigstar[/tex]Midpoint of two points:-
[tex]\boxed{ \sf{M \: = \: \dfrac{x_1 \: + \: x_2 }{2} \: , \: \dfrac{y_1 \: + \: y_2 }{2}}} \: \pink\bigstar[/tex]8. An angle that contains 126° 32' is a/an Angle
angle.
A. straight
B. obtuse
C. right
D. acute
Answer:
B Angle obtuse Since 126o 32 ' is bigger 90o but smaller than 180o.
Step-by-step explanation:
Acute: An angle that measures < 90o.
Right: An angle that measures 90o.
Obtuse : An angle that is > 90o but < 180o.
Straight: An angle that measures 180o.
I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER
2x+3y=8 find the solution using addition elimination method
Answer:
X equals 1, and Y equals 2
First, find the value of 2x, we have to assign one to make the problem work.[tex]2x = 2 * 1[/tex]
Now, find y.[tex]3y = 3 * 2[/tex]
Find the results of the multiplication. Remember that anything times 1 is always the same number, the base number.[tex]2 * 1 = 2[/tex]
[tex]3 * 2 = 6[/tex]
Now, add.[tex]6 + 2 = 8[/tex]
________________________________________________________
Now, we go over what we learned.
________________________________________________________
What have we learned?We learned how to make inequalities true by assigning values to substitutions.
Questions related to this topic? Ask me in the comments box.
Which expression is equivalent to y^4-400?
Answer: (2)
Step-by-step explanation:
Simplify the expression with nested parentheses.
4 30+ 26+6 −33
Answer:
not sure if the 4 is seperate but if it is then (30+26)+(6-33)
Step-by-step explanation:
A fair dice is rolled.
Work out the probability of getting a number less than 6.
Give your answer in its simplest form
Answer: 5/6
Step-by-step explanation: If its a six sided die with numbers 1 - 6
please help me Find m
Answer: 70 degrees
Step-by-step explanation:
