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.
What’s value of x in 12x-11=2x+5
Answer:
x = 1.6 or [tex]\frac{8}{5}[/tex]
Step-by-step explanation:
12x - 11 = 2x + 5
Add 11 to both sides,
12x - 11 + 11 = 2x + 5 + 11
12x = 2x + 16
Subtract 2x from both sides,
12x -2x = 2x - 2x + 16
10x = 16
Divide both sides by the same factor (in this cas the factor is 10),
[tex]\frac{10x}{10} =\frac{16}{10}[/tex]
[tex]x=\frac{8}{5}[/tex]
x = 1.6 or [tex]\frac{8}{5}[/tex]
Drawing a 3 cards that are all 9 from a deck of cards
Answer:
the answer is 3 :))
Step-by-step explanation:
9/3= 3
Pls I need this today right now pls
Answer:
ur right its A
Step-by-step explanation:
In a computer game , Reese scored 13,925 points. Manny scored 2,742 points more than Reese. How many points did manny score?
Answer:
16,667
Step-by-step explanation:
13,925 + 2,742 = 16,667
Answer:
Bonjour
Step-by-step explanation:
Reese : 13 925
Manny : 2 742 de plus que Reese donc 13 925 + 2 742
13 925 + 2 742 = 16 667
Manny a marqué 16 667 points.
Find 12 1/2% of #400.00
find 12 1/2 percentage of 400 naira
Answer:
I think its 50 if this is correct can u mark me brainliest?
What is the measure of BDC?
Answer:
250 degrees
Step-by-step explanation:
180-55 = 125
360-125= 250
Find the Missing numbers:
250/20=25/?
76.280
seventy-six and twenty-eight ten-thousandths
seventy-six point two eight zero
seven and six hundred twenty-eight thousandths
seventy-six and two hundred eighty thousandths
Answer:
seventy-six and two hundred eighty thousandths.
Step-by-step explanation:
Select the correct answer.
If the graphs of the linear equations in a system are the same line, what does that mean about the possible solution or solutions of the system?
A.
There is exactly one solution.
B.
There is no solution.
C.
There are infinitely many solutions.
D.
The lines in a system cannot graph as the same line.
Answer:
C
Step-by-step explanation:
A new computer repair company offers house calls to their customers. They use the function f(h) = 45h + 80 to calculate the total repair bill, f(h), for h number of hours worked. A. What does 45 represent in the function? < B. What does 80 represent in the function? > C. Find h if f(h) = 215. What does this value of h mean in the context of the problem? <
The function f(h) = 45h + 80 of the computer repair is a linear function
45 represents the hourly rate80 represents the base costThe value of h means 3 hoursWhat 45 and 80 represents?A linear function is represented as:
f(h) = mh + c
Where:
m represents the rate; m = 45b represents the base cost or y-intercept; y = 80By comparison;
45 represents the hourly rate and 80 represents the base cost
How to calculate h?
We have:
f(h) = 45h + 80
When f(h) = 215, the function becomes
45h + 80 = 215
Subtract 80 from both sides
45h = 135
Divide both sides by 45
h = 3
Hence, the value of h means 3 hours
Read more about linear functions at:
https://brainly.com/question/15602982
Figure 1
Figure 2
B
D
E
С
Z
128 cm
2
am
Area of Figure 1 =
Area of Figure 2 =
Perimeter of Figure 1 = 24 cm
Perimeter of Figure 2 = 21 cm
BC=
DE = 7 cm
Tip: Go to the internet and put the topic you are focused more on that you posted in Brainly
Step-by-step explanation:
Try it to give you some help
In what fraction of their games did Darnel's team score 2 or more runs?
Answer:
0.75 or 3/4Step-by-step explanation:
According to the given box plot, the 25% point matches the number 2.
It means the rest of the scores are 2 or more runs:
100% - 25% = 75% = 0.75 = 3/4 of all the runsGraph the line with slope
2.
passing through the point (-3, 3).
3
1
?
13
The graph of the line with the given slope that passes through (-3, 3) is shown in the image attached below.
What is the Equation of a Line in Slope-intercept Form?The equation in slope-intercept form of a line, is y = mx + b, where:
b = y-intercept
m = slope = change in y/change in x.
Given a line with slope = 2 and passes through (-3, 3), plug in m = 2 and (a, b) = (-3, 3) into y - b = m(x - a) to write the equation of the line
y - 3 = 2(x - (-3))
Rewrite in slope-intercept form
y - 3 = 2x + 6
y = 2x + 6 - 3
y = 2x + 3
Therefore, the graph of the line with the given slope that passes through (-3, 3) is shown in the image attached below.
Learn more about slope-intercept form on:
https://brainly.com/question/1884491
Find the area of
the parallelogram.
yd
15 yd
The area of the parallelogram is
yd?.
(Type an integer or a decimal.)
225
Step-by-step explanation:[tex]15\times 15[/tex]
__________________________________________________
Calculate
[tex]15\times 15[/tex]
__________________________________________________
Calculate the product or quotient
[tex]225[/tex]
I hope this helps you
:)
I need to solve for “x” and then for “y”.
Step-by-step explanation:
[tex]13 - 4y = 1 - y(opposite \: angles \: of \: a \: parallelogram \: are \: equal) \\ 13 - 4y = 1 - y \\ - 4y + y = 1 - 13 \\ - 3y = - 12 \\ y = \frac{ - 12}{ - 3} \\ y = 4 \\ \\ 7x - 3 = 6x + 3(opposite \: angles \: of \: a \: parallelogram \: are \: equal) \\ 7x - 3 = 6x + 3 \\ 7x - 6x = 3 + 3 \\ x = 6 \\ x = 6 \: \: \: \: \: y = 4[/tex]
help its so hard!!!!!!!!!
Answer:
It should be 27 from the answer I got
Step-by-step explanation:
Hope this helps <3
PLEASE HELPPP !! use the pythagorean therorem equations and find the missing length of the side.
Answer:
if you want to find c do sqrt( a² + b²)
if you want to find a do sqrt( c² - b²)
if you want to find b do sqrt( c² - a²)
A circle has its center at (2,-4). The radius of the circle extends to the
point (2,5). What is the approximate circumference of the circle?
⚫️114 units
⚫️14 units
⚫️28 units
⚫️57 units
Check the picture below, so the circle looks more or less like so, with a radius of 9.
[tex]\textit{circumference of a circle}\\\\ C=2\pi r~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=9 \end{cases}\implies C=2\pi (9)\implies C\approx 57[/tex]
Find the surface area of a triangular prism. 16 cm., 20cm.,12cm.,10cm.
300,000+5,000+80+8· 1/100 +9· 1/10,000
Answer:
305,080.0809
Step-by-step explanation:
3 x 100,000 : digit 3 is in the hundred thousands place
5 x 1000 : digit 5 is in the thousands place
8 x 10 : digit 8 is in the tens place
8 x 1/100 : digit 8 is in the hundredths place which means it is the second number after the decimal
9 x 1/10,000 : digit 9 is in the ten thousandths place which means it is the fourth number after the decimal
we get the following number:
305080.0809
Find the seperate equation from 2x² - 5xy + 2y²
Please can someone answer this...
I'll mark as BRAINLIEST...
Answer:
There is two simple equations one where you take out x as a comman factor and y as a common factor
Step-by-step explanation:
x(2x - 5y+ 2y squared)
Y(2x squared - 5x + 2y)
Sorry I don't know how to do the sqaure thingy but that's how you find two separate equations
Francis bought a new dress that was discounted by 21%. She used the following expression to find the price of the dress after the discount was applied.
d - (0.21)d
Which of the following is another expression that could be used to get the same results?
A.
79d
B.
d - 21
C.
d - 0.21
D.
0.79d
Answer:
D
Step-by-step explanation:
D . .79 d would be the same
d- .21d = (1-.21) * d= .79 d
Is 3x + 4 a factor
of f(x) = 3x2 + 13x2 + 18x + 8?
Answer:
Yes
Step-by-step explanation:
Yes, because the remainder of f(x) is 0
Answer:
4/3
Step-by-step explanation:
correct this answer
At the popular restaurant fire wok 55% of guests order the signature dish what fraction of guests order the signature dish?
Answer:
The simplest fraction is 11/20
Step-by-step explanation:
Given that,
Guests order the signature dish is 55%.
We need to find simplest fraction of guests who order signature dish.
Let the fraction be X.
According to above information, calculation of data are as follows,
x=55/100
x=11/20
So, the simplest fraction of guests is 11/20
Learn more : brainly.com/question/13173500
the sum of two integers is - 120 if one of them is 82 find the other
Answer:
38
Step-by-step explanation:
Here,
Let one of the unknown integer be x whereas the other one be 82 (according to question)
Now,
X+82=120
Or, x=120-82
Or, x=38
Therefore the value of the unknown integer is 38.
Estimate the square root to the nearest (a) integer and (b) tenth.
46−−√
Using rounding concepts, it is found that the estimates of the square root of 46 are given as follows:
a) Rounded to the nearest integer, the square root of 46 is of 7.
b) Rounded to the nearest tenth, the square root of 46 is of 6.8.
How we round a number?To round a number to the nearest integer, we have to look at the tenths digit.To round a number to the nearest tenth, we have to look at the hundredths digit.If the digit we look is of 5 or greater, we round one to the rounded digit.Using a calculator, we have that the square root of 46 is of 6.78.
7 > 5, hence rounded to the nearest integer, the square root of 46 is of 7.8 > 5, hence rounded to the nearest tenth, the square root of 46 is of 6.8.More can be learned about rounding concepts at https://brainly.com/question/17248958
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If csc a = -5square root 6 /12 and cos a >0, find cot a
The measure of cot(a) given that csc(a) = -5√6/12 is -1/4√61.5
Trigonometry identityGiven the following trigonometry function as shown below:
csc(a) = -5√6/12
Since csc(a) = 1/sin(a)
sin(a) = -12/5√6
sin(a) = -12√6/30 = -4√6/15 = opp/hyp
Determine the measure of cos(a)
adj^2 = (-4√6)^2+15^2
adj^2 = 144+225
adj = √369
cot(a) = cos(a)/sin(a)
cot(a) = √369/15 * 15/ -4√6
cot(a) = -1/4√61.5
Hence the measure of cot(a) given that csc(a) = -5√6/12 is -1/4√61.5
Learn more on trigonometry function here: https://brainly.com/question/1143565
please help me!!!!!!!
Answer:
in the first one: BMC is equilateral triangle, because BM divides AC into equal sections, and because of that MC is 3.5 so it equals to BC.
Since angle BMC is 60° (because the triangle is equilateral), angle AMC will be 120°.
Since angle A + angle C should be 90°, if amgle C is 60°, then angle A will be 30.
In triangle AMB, angle ABM will be 30° (180°-120°(angle AMB) - 30°(angle BAM)).
As we calulated, angle A is 30° and angle ABM is 30° too, that means in BAM triangle AM=BM.
i need this done help please asap i have a meeting with my teacher in 30 minutes
The answer to the given permutation and combination are
3024015585009252To solve the given problems, we have to use permutation and combination
Permutation and CombinationThis is a topic in mathematics that deals with the probability or number of ways an event can occur.
a)10P5
[tex]_1_0P_5 = 30240[/tex]
b) 6C2
[tex]_6C_2 = 15[/tex]
c) This will be a multiplication of permutation of number. This becomes
[tex]_2_6P_2 * _1_0P_2 = 58500[/tex]
This can happen in 58,500 ways.
d) To arrange 9 blocks in a row, she can do it in
[tex]_9C_1 = 9[/tex]
she can do this in 9 ways
e) This can be solved using combination by writing it as
[tex]_1_0C_5 = 252[/tex]
She can do this in 252 ways.
From the above calculations, the answer to the given permutation and combination are
3024015585009252Learn more on permutation and combination here;
https://brainly.com/question/9764004
A patient is ordered 2 2/3 ounces of oral medication per dose today. How many ounces of this oral medication should the patient receive per day?
Answer:
Varies - possibly not enough information
Step-by-step explanation:
How many doses per day?
Do you only need to know the amount of oz. for "today"?
Does this need to be expressed in decimal form?
If the patient is ordered to take 2- 2/3 oz. per day, you have your answer.
Decimal form: 2-2/3 = 8/3 = 2.667 oz.