Answer:
(Altitude)^2+(Base)^2=(Hypotenuse)^2
The pH of a solution is a measure of the quantity of hydrogen atoms (H) in the solution. It is given by the formula f(x) = −log x. In the formula, x = [H+], the molar concentration of hydrogen atoms, or the number of moles of hydrogen atoms per liter of solution
The question is incomplete. The complete question is :
The pH of a solution is a measure of the quantity of hydrogen atoms (H) in the solution. It is given by the formula f(x) = −log x. In the formula, x = [H+], the molar concentration of hydrogen atoms, or the number of moles of hydrogen atoms per liter of solution
The approximate molar concentration of several chemicals are given. Find the pH of each. Use the calculator and round to the nearest tenth, if necessary.
Oven cleaner: [H+] = 10−13 pH =
Water: [H+] = 0.0000007 pH =
Blood: [H+] = 0.00000004 pH =
Vinegar: [H+] = 0.0063 pH =
Solution :
Given formula :
f(x) = −log x
Here, x = [H+] = molar concentration of hydrogen atoms
Therefore, the pH of each of the following solution are :
Oven cleaner
[[tex]$H^+$[/tex]] = [tex]$10^{-13}$[/tex]
pH = - log [[tex]$H^+$[/tex]]
= [tex]$- \log 10^{-13}$[/tex]
= 13
Water
[[tex]$H^+$[/tex]] = 0.0000007
pH = - log [[tex]$H^+$[/tex]]
= - log 0.0000007
= 6.2
Blood
[[tex]$H^+$[/tex]] = 0.00000004
pH = - log [[tex]$H^+$[/tex]]
= - log 0.00000004
= 7.4
Vinegar
[[tex]$H^+$[/tex]] = 0.0063
pH = - log [[tex]$H^+$[/tex]]
= - log 0.0063
= 2.2
if 24= 2f+3f+f, find f
Answer:
6f = 24
f = 4
Step-by-step explanation:
[tex]\huge\textsf{Hey there!}[/tex]
[tex]\textsf{24= 2f + 3f + f}\\\text{COMBINE the LIKE TERMS}\\\\\textsf{2f + 3f + f}\\\textsf{2f + 3f = \bf 5f}\\\textsf{5f + f}\\\textsf{= \bf 6f}\\\text{New equation: \textsf{6f = 24}}\\\text{DIVIDE 6 to BOTH SIDES}\\\mathsf{\dfrac{6f}{6}=\dfrac{24}{6}}\\\textsf{CANCEL out: }\mathsf{\dfrac{6}{6}}\textsf{ because that gives you 1}\\\textsf{KEEP: }\mathsf{\dfrac{24}{6}}\textsf{ because that helps solve for the f-value}\\\\\mathsf{\dfrac{24}{6}=\bf f}\\\\\\\mathsf{\dfrac{24}{6}=24\div6=\bf 4}[/tex]
[tex]\boxed{\boxed{\large\textsf{Answer: \huge \bf f = 4}}}\huge\checkmark[/tex]
~[tex]\large\textsf{Good luck on your assignment and your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
Which data type is variable 'a' as per below code?(numeric/non-numeric) Dim a as integer a=10 for grade 7 Computer
Answer:
The answer is "numeric".
Step-by-step explanation:
The Dim keyword is used in Visual Basic which is used to establish the dependent variable and other information such as the code that the variable may access the variables, computer utilizes the statement Dim. The dimensions are brief and then used to define variables. The Dim statement is placed just after sub definition only at the start of a VBA module (short for Subroutine).The variable to hold an integer value is seen in the above example.
Kofi and Kojo were given 380 cedis to share, Kojo had 15 cedis more than Kofi. If Kofi's share is x, find an expression for Kojo's share.Hence find how much each received.
Answer:
kojo = x + 15
kofi = $182.50
kojo = $197.50
Step-by-step explanation:
kofi = x
kojo = x + 15 (since Kojo h as 15 cedis more than Kofi)
380= x + 15 + x
2x + 15 = 380
combine like terms
2x = 380 - 15
2x = 365
x = 182.50
Kojo = 15 + 182.50 = $197.50
The voltage E in an electrical circuit is modeled by E=3.8cos(110π t). What is the maximum voltage?
Answer:
Max E=3.8 Voltage
Step-by-step explanation:
[tex]maximum-value -of cos(\theta) =1, when \theta=0,360,720\\110\pi t=0, therefore t=0, 1.04, 2.08 etc[/tex]
The maximum voltage for the electric circuit is E = 3.8 when the value of the trigonometric function cos(110π t) has the maximum value = 1, from the range of cosine function.
What is the range of the trigonometric function cosine?The range of the trigonometric function of cosine, that is, cos θ, is [-1, 1], that is, -1 ≤ cos θ ≤ 1.
How do we solve the given question?We are given that the voltage E in an electrical circuit is modeled by E = 3.8cos(110π t).
We are asked to find the maximum voltage E that can be obtained from the circuit.
The voltage E = 3.8cos(110π t).
In the given formula 3.8 is constant and cos(110π t) is variable. The value of E is maximum when the trigonometric function cos(110π t) attains the maximum value.
Since its a cos function, the maximum value it can attain = 1, as the range of the trigonometric function of cosine, that is, cos θ, is [-1, 1], that is, -1 ≤ cos θ ≤ 1.
When the variable attains the maximum value = 1, the value of the voltage E = 3.8*1 = 3.8.
∴ The maximum voltage for the electric circuit is E = 3.8 when the value of the trigonometric function cos(110π t) has the maximum value = 1, from the range of cosine function.
Learn more about the ranges of trigonometric functions at
https://brainly.com/question/9565966
#SPJ2
someone PLSSS HELPPP fast plsss !!!
Help me or Shrek's donkey won't get pancakes!
Answer:
A. y=x and y=x+2
Step-by-step explanation:
A.
y=x and y=x+2
The equations both match the slope and intercept of the graphed equations.
Can I have the pancakes instead of the donkey?
The problem has been started for you.
What is the quotient?
86
86.6
86.ModifyingAbove 6 with bar
87
Answer:
the third one
Step-by-step explanation: 6 22 22 24
the quotient is 86.6666666 the repeating 6 is sometimes written with a bar above the .6 like
86.6 except the bar is on top of the second 6
Calculate the length of line segment XY in each triangle.
Please No Docs/No File Only real answer
25 points and a 5 star rated
Answer:
XY = 10 cm
Step-by-step explanation:
XY is a midsegment and is half the length of the 3rd side DE, that is
XY = [tex]\frac{1}{2}[/tex] DE = [tex]\frac{1}{2}[/tex] × 20 = 10 cm
The equation x^2+ y^2+ 8x - 12y + 43 = 0 is the equation of a circle. Complete the square to change this
equation to standard form. Find the radius and the coordinates of the center of the circle and then graph the
circle.
Answer:
ans: centre of circle is ( -4 , 6 )
and radius is 3 unit
Use the following to write and solve a proportion to find the values of X, Y and Z.
Answer:
x = 48-32 = 16
y = 32/16 × 10 = 20
z = 48/32 × 26 = 39
What is the value of x in the triangle?
45°
7
X
45°
A. 7
B. '14
C. 72
D. 7V2
2
Answer:
c
Step-by-step explanation:
the value of x can be determined using Pythagoras theorem
The Pythagoras theorem : a² + b² = c²
where a = length
b = base
c = hypotenuse
The triangle is an isosceles triangle
An isosceles triangle has two opposite sides. If the two angles are equal , it means the triangle is an isosceles. Thus the value of the base is also 7
7² + 7²
49 + 49
= 98
√98 = 9.899 = 7√2
(Find m∠RTS) m∠RTS=
Answer:
[tex]m\angle RTS=34^{\circ}[/tex]
Step-by-step explanation:
From the Isosceles Base Theorem, the two base angles of an Isosceles Triangle are equal. Therefore, [tex]m\angle RTS=m\angle TRS[/tex].
Since the sum of the interior angles of a triangle is 180 degrees, we have:
[tex]m\angle RTS +m\angle TRS+112=180,\\2\cdot m\angle RTS+112=180,\\2\cdot m\angle RTS=68,\\m\angle RTS=\boxed{34^{\circ}}[/tex]
solve the system of equations y=2x-3 and y=x^2-3
I have attached some answers in the photos below hope you find them useful
Answer:
0 and 1
Step-by-step explanation:
Given :
[tex]y= 2x-3\\y=2x^{2} -3[/tex]
Now equate the both equation :
[tex]2x-3=2x^{2} -3[/tex]
2x=2[tex]x^{2}[/tex]
x-[tex]x^{2}[/tex]=0
x(1-x)=0
x=0
1-x=0
x=1
Therefore, x=0,1
What is the total number of digits required in numbering the pages of a book, which has 1, 150 pages?
Answer:
3,493 digits
Step-by-step explanation:
Total pages of the book = 1,150
Page 1 - 9 = 9 digits
Page 10 - 99
= 2 * 90 pages
= 180 digits
Page 100 - 999
= 3 × 900 pages
= 2,700 digits
Page 1000 - 1,150
= 4 × 151 pages
= 604 digits
Total digits required in numbering 1,150 pages = 9 + 180 + 2,700 + 604
= 3,493 digits
Total digits required in numbering 1,150 pages = 3,493 digits
Pls answer……………………..
Answer:
Step-by-step explanation:
J and k are parallel if
angle 1 = angle 4 (vertically opposite angles)
angle 2 + angle 5 = 180 degree (being co interior angles)
angle 4 = angle 5 (being alternate interior angles)
angle 1 = angle 5 (being corresponding angles)
Answer:
2 and 5 are co - interior angles
1 and 3 are corresponding angles
1 and 4 are alternate
6 and 8 are corresponding angles
Step-by-step explanation:
Area of the base=
A) 8 pie square units
B) 16 pie square units
C) 64 pie square units
Answer:
16 pi
Step-by-step explanation:
The base is the circle
A = pi r^2
A = pi (4)^2
A = 16 pi
Answer: 16[tex]\pi[/tex] square units
Step-by-step explanation:
This figure is a cylinder. The base of a cylinder is a circle. The formula for finding the area of a circle is [tex]\pi r^2[/tex]. The radius in the image is 4. Now we can solve
[tex]\pi 4^2\\\pi 16\\16\pi[/tex]
De las ventas obtenidas en el mes de enero , el dueño de " La chiquita " tiene la obligación de entregar el 16 % de IVA . Si en un mes se vendieron en la tienda $80,000 ¿ Cuánto tendrá que reportar de IVA al gobierno ?
Answer:
The amount paid as VAT is $ 12800.
Step-by-step explanation:
Sales = $ 80,000
VAT = 16 %
The amount of VAT paid to the government is
= 16 % of $ 80,000
= 0.16 x $ 80,000
= $ 12800
The amount paid as VAT is $ 12800.
Mario sells electronics at Big Box Electronics Store. He is paid a salary of $250 a week
plus 7% commission on his sales.
a) Write an equation for the line, in slope/y-intercept form, representing his weekly
earnings, E, where Sis his weekly sales. Put this answer into Blank #1.
b) Identify the slope. Put this answer into Blank #2.
c) What does the slope represent? Put this answer into Blank #3.
c) What does the E-intercept represent? Put this answer into Blank #4.
d) What were Mario's sales in the week he earned $530? Put this answer into Blank
#5.
Blank # 1
Blank # 2
Blank # 3
Blank #4
Blank # 5
Answer:
Step-by-step explanation:
E = 0.07s + 2500.07Salary per weekWhat he makes if he doesn't sell anything that week $4000Change 1/3 to a decimal number (show the working)
Answer:
0.33
Step-by-step explanation:
1/3 can also be written as 1 ÷ 3 which equals 0.33
Answer:
0.333333333
Step-by-step explanation
When drawn in standard position, in which quadrant does the terminal side of the angle −240° lie?
Answer:
Option (2)
Step-by-step explanation:
All angles are positive when measured counterclockwise from the x-axis.
Terminal side of 240° degrees when measures counterclockwise will lie in the 3rd quadrant.
But the angle is -240°.
That means angle is being measured clockwise from the x-axis.
Therefore, terminal side of the of the angle will be in the 2nd quadrant.
Option (2) will be the correct option.
Which statements regarding the vertex of a quadratic function are true? Select all that apply.
Answer:
the rules regarding the vertex of a quadratic function are:
the parabola opens up, the vertex represents the lowest point on the graph, or the minimum value of the quadratic function. If the parabola opens down, the vertex represents the highest point on the graph, or the maximum value. In either case, the vertex is a turning point on the graph.
Hope This Helps!!!
A line is parallel to y = 3x + 5 and intersects the point (-2 , 6). What is the equation of this parallel line?
Answer:
y = 3x + 12
Step-by-step explanation:
Slope of y = 3x + 5 is 3
Line parallel will have same slope 3
Line intersects point at (-2, 6)
Replace into y = mx + b to find
6 = 3(-2) + b
6 = -6 + b
12 = b
Equation of line:
y = 3x + 12
Answer:
y = 3x + 12
Step-by-step explanation:
Lines parallel to each other will have the same slope but different y-intercepts. This means that the equation of this parallel line has a slope of 3.
y = 3x + b
Now we need to find the y-intercept by plugging in the point (-2, 6) into the equation. (Replace x with -2 and y with 6.) Then we solve it.
y = 3x + b
6 = 3(-2) + b
6 = -6 + b
+6 +6
12 = b
The y- intercept is 12. So the equation of the parallel line is y = 3x + 12
14895 decreased by 3%
What is Euclid's fifth postulate?
How would you rewrite Euclid’s fifth postulate so that it would be easier to understand?
Step-by-step explanation:
espero que te ayude amigo
What value of x is in the solution set of 9(2x + 1) < 9x - 18?
-4
-3
-2
-1
Answer:
The only possible answer that is correct is the first one, x = -4.
Step-by-step explanation:
Simplify the given inequality as much as possible, and then substitute each of the given x values one by one to determine which is in the solution set.
9(2x + 1) < 9x - 18 becomes 18x + 9 < 9x - 18, which, if reduced by dividing all four terms by 9, becomes 2x + 1 < x - 2.
Simplifying further, we get x < - 3. The only possible answer that is correct is the first one, x = -4. -4 < -3 is true.
Step-by-step explanation:
9(2x + 1)<9x - 1818x + 9 < 9x - 1818x - 9x < - 18 - 99x < 27x = 27/9x = 3.How would you solve this problem??
Answer:
x = 14000
Step-by-step explanation:
Function representing the cost to the company,
C(x) = -27x² + 51000x + 20433
Function defining the revenue generated,
R(x) = -36x²+ 303000x
Since, Profit to the company = Revenue - Cost
= R(x) - C(x)
P(x) = -36x² + 303000x - (-27x² + 51000x + 20433)
= -36x² + 27x² + 303000x - 51000x - 20433
P(x) = -9x² + 252000x - 20433
To maximize the profit,
P'(x) = -18x + 252000 [Derivative of the function P(x)]
P'(x) = 0
-18x + 252000 = 0
18x = 252000
x = 14000
Therefore, for the maximum profit company has to produce and sell 14000 phones.
The money m (in £) Billy has to spend each week is his wage w (in £) subtract the tax t (in £) he pays on his income. Enter a formula for the money he can spend and enter how much he has to spend if he earns £150 a week and pays £42 in tax.
Answer:
m = w - t
£108
Step-by-step explanation:
m = Money Billy has to spend per week :
m = wage, w - tax, t
Hence,
m = w - t
Given;
Wage = £150 ; tax = £42
m = £150 - £42
m = £108
Emma wants to give someone 5.2m every day she can donate 10k how long will it take her to donate 5.2m?
Answer:
520 days
Step-by-step explanation:
--------------------------------------
5.2 million = 5,200,000
10 thousand = 10,000
5,200,000 ÷ 10,000 =
= 520 days
---------------
Hope this helps.
Answer:
520 days
Step-by-step explanation:
thanks for the pts
✌️❤️✌️
Jeremy is making a trail mix containing raisins and peanuts. Raisins cost $1.50 per pound. Peanuts cost $2.50 per pound. Jeremy spends $10.50 to make 5 pounds of trail mix. He uses the table below to organize this information.
Answer:
x = amount of raisins
y = amount of peanuts
x+y = 5
1.50x+2.50y = 10.50
Step-by-step explanation:
I can't see a table, and im not sure what the question is, but anyways,
you solve this by using elimination or substitution in the system of equations.
Personally, substitution is easier for me so:
x+y = 5
y=5-x
1.50x+2.50(5-x) = 10.50
1.50x+12.50 -2.50x = 10.50
-1x+12.50 = 10.50
-x+12.50-12.50 = 10.50-12.50
-1x = -2
-1x/-1 = -2/-1
x = 2
y =5-x
y=5-2
y=3
Since x was the amount of raisins, and y was the amount of peanuts, we can say that Jeremy used two pounds of raisins and 3 pounds of peanuts to make his 5 pounds of trail mix.