13. Writing to Explain Explain how you would convert a
measurement given in ounces into pints.
Answer:
you divide the number of ounces by the number of pints
Step-by-step explanation:
Question 83 pts
Given that 2 Al + 6 HCl → 2 AlCl3 + 3H2
UR ON TIMER GO FASTtt How many moles of hydrogen are produced if we start from 2.2 mol Al and 4.2 mol HCl?
2.1
mol H2
How many moles of excess reactant are left over?
Answer:
Ummm I dont know what subject it is so i will guess 2.3?
Step-by-step explanation:
I'm Sorry im really useless
louise bought 80 metres of fencing to make an enclosure for her pet dog .tommy if louise expects a rectangular enclosure what is the largest area it can have ? explain your answer
Answer:
400 m^2.
Step-by-step explanation:
The largest area is obtained where the enclosure is a square.
I think that's the right answer because a square is a special form of a rectangle.
So the square would be 20 * 20 = 400 m^2.
Proof:
Let the sides of the rectangle be x and y m long
The area A = xy.
Also the perimeter 2x + 2y = 80
x + y = 40
y = 40 - x.
So substituting for y in A = xy:-
A = x(40 - x)
A = 40x - x^2
For maximum value of A we find the derivative and equate it to 0:
derivative A' = 40 - 2x = 0
2x = 40
x = 20.
So y = 40 - x
= 40 - 20
=20
x and y are the same value so x = y.
Therefore for maximum area the rectangle is a square.
The largest area of rectangle will be 400 square meters.
Let us consider the length and breadth of rectangle is x and y respectively.
Perimeter of rectangle is given that 80 meters.
[tex]2x+2y=80\\\\x+y=40\\\\y=40-x[/tex]
Area of rectangle is,
[tex]=x*y\\\\=x*(40-x)\\\\A=40x-x^{2}[/tex]
For maximum area, differentiate Area with respect to x and equate with zero.
[tex]\frac{dA}{dx} =\frac{d}{dx}(40x-x^{2} ) \\\\\frac{dA}{dx} =40-2x=0\\\\x=40/2=20m[/tex]
So, [tex]y=40-20=20m[/tex]
Area = [tex]20*20=400m^{2}[/tex]
Thus, The largest area of rectangle will be 400 square meters.
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Alicia bought a notebook and several erasers at the student store. The graph shows the relationship between the total cost of her items and the number of erasers she purchased.
What is the cost of each eraser?
Answer:
1.50
Step-by-step explanation:
Is the following expression greater than, less than, or equal to zero? (a^2+b^2)/(a^2+b^2+1)
so I think it's equal to but can someone verify it for me?
Answer:
is equal cuz a will be cut and be will be cut so what is left 1 is left so it is equal plz Mark me as the brainliest and thank me
PLEASE HELP ME PLEASEEEEE
Answer:
56.52 units³
Step-by-step explanation:
[tex]v = \pi {r}^{2}h[/tex]
r = 3 units ; h (height) = 2
V = 3.14 × 3² × 2
= 3.14 × 9 × 2
= 56.52 units³
Solve the algebraic inequality. The product of -3 and a number is at least -24.
Answer:
The first answer
Step-by-step explanation:
Based on the data, which measure of central tendency will provide the most accurate representation of the travel expenses?
A Mean
B. Median
C. Mode
11) Help pls I have the answer I just need to show the work.
True or False. To find the missing side length in the diagram, use the Pythagorean Theorem.
Answer: A
WILL GIVE BRAINLIEST.
If cos(2/3x+20)°=sin(2x−10)°, find the acute angles of the corresponding right triangle.
a = b =
Answer:
u should ask that tutor guy he will help u understand what to do step by srep
A farmer grows x acres of peas and y acres of tomatoes. He has 12 acres available to plant peas and tomatoes. Write an inequality in x and y to satisfy this condition. The number acres of tomatoes planted must not be more then twice the number of acres of peas planted. Write an inequality in x and y to satisfy this condition.
Answer:
Y < 2X
Step-by-step explanation:
Let the acres of land on which pea is to be cultivated is "X" acres and the acres of land on which tomato is to be cultivated is "Y"
It is given that number acres of tomatoes planted must not be more then twice the number of acres of peas planted
Thus, [tex]Y < 2X[/tex]
[tex]X + Y = 12[/tex] acres
[tex]Y = 12-X[/tex] acres
Thus,
[tex]12 - X \leq X\\12\leq 2X\\6 \leq X[/tex]
Let us take X = 6 , Then Y = 13-6 = 6
What will be the coordinates of the image of point b?
Answer:
your answer will be D). (6,9)
Step-by-step explanation:
hope it helps bye!!
w is less than or equal to 4 and greater than or equal to -8
Answer:
[tex]4 \geqslant w \geqslant - 8[/tex]
what is Euler's formula?
Answer:
Euler's formula, Either of two important mathematical theorems of Leonhard Euler. ... It is written F + V = E + 2, where F is the number of faces, V the number of vertices, and E the number of edges. A cube, for example, has 6 faces, 8 vertices, and 12 edges, and satisfies this formula.
Answer:
e^{ix}=\cos x+i\sin x
e = base of the natural logarithm
i = imaginary unit
x = the angle in radians
Step-by-step explanation:
PLEASE HELP!!!!!!Chef Alfredo wants to offer some specials in the Sunday edition of the Pepperville Press. What is the discounted
price on 18% discount on two medium cheese pizzas that regularly cost a total of $17.95 for the two pizzas?
Please show your work and answer in a ▶complete sentence◀(round to the nearest cent)
Answer: The discounted price is $14.72 for the two medium cheese pizzas.
17.95 × 0.18 (18%) = 3.231
17.95 - 3.231 = 14.719
Find the volume of a cylinder with a radius of 3cm and a height of 7 cm.
Answer:
The volume of the cylinder ≅ 197.82[tex]cm^{2}[/tex]
Step-by-step explanation:
The volume of a cylinder is equal to the area of the base times the height. We know the radius, therefore we can find the area of the base. The formula for the volume of the cylinder is as follows:
V = π[tex]r^{2}[/tex][tex]h[/tex]
(now substitute the values of "r" and "h", and get...)
V = π[tex]r^{2}[/tex][tex]h[/tex]
[tex]V = (3^{2} )(7)[/tex] x π
V = (9)(7)π
V = 63π
V ≅ 197.82[tex]cm^{2}[/tex]
Estimate a 15% tip on a dinner bill of $61.81 by first rounding the bill amount to the nearest ten dollars.
Answer:
Hii, so the tip would be $8.25 and the price would be $63.25
Step-by-step explanation:
I hope this helps and hope im correct sorry if im not ;--;
PLEASE HELP ASAP!!! will mark brainliest
dont answer if u dont know and no links
Answer:
9 sq un
Step-by-step explanation:
Trigonometry
cos62 x 12
Answer:
See explanation
Step-by-step explanation:
cos62˚ ≈ 0.469
0.469 x 12 = 5.628
The value of cos62 x 12 is 5.634.
We are given that;
The trigonometric function
cos62 x 12
Now,
Trigonometric identities are the functions that include trigonometric functions such as sine, cosine, tangents, secant, and, cot.
To find the value of cos62 x 12, we can use a calculator or a trigonometric table.
we get:
cos62 x 12 = 0.4695 x 12
= 5.634
Therefore, by trigonometric function the answer will be 5.634 (approx.)
Learn more about trigonometric;
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OK SO I PUT IT AS 117 DEGREES BUT IM NOT SURE IF ITS RIGHT SO CAN SOMEONE PLEASE CONFIRM FOR ME BEFORE I SUBMIT?
The table shows the possible outcomes for choosing one rose and one tulip.
A 3-column table with 3 rows. Column 1 has entries Yellow rose, white rose, red rose. Column 2 is labeled purple tulip with entries (P, Y), (P, W), (P, R). Column 3 is labeled Orange tulip with entries (O, Y), (O, W), (O, R).
How many total possible outcomes are there?
5
6
9
11
Answer:
6
Step-by-step explanation:
Took the test
Answer:
6
Step-by-step explanation:
i need helllllllllllllllllllllllllllllllllllllllllllp
A woman is four times older than her daughter,eight years later their age bracket would be 74 and 18 respectively.What is their present ages
Answer:
Step-by-step explanation:
What is the value of the expression below?
256^1/4
A. 16
B. 8
C. 4
D. 64
Answer:
C
Step-by-step explanation:
256^1/4=4
So C is the right answer
Hope this helps :D
*PLEASE ANSWER!! I DONT GET IT!!*
What would the monthly loan payment be for a car that costs $25,000 if your loan is for 5 years at a rate of 8% per year?
a.) $506.91
b.) $600.56
c.) $1,056.91
Answer:
506.91
Step-by-step explanation:
Either that or it is D
Complementary angles are two angles whose
measures add to 90°. The ratio of the measures of
two complementary angles is 7:11. What are the
measures of the angles?
Answer:
let the two complementary angles be x and 90-x
x= 7t (say)
90-x= 11t
x+90-x=90= 7t+11t=18t
90=18t
t=90/18= 10/2= 5
so x= 7×5=35 degrees
and 90-×=90-35=55 degrees
Answer:
Step-by-step explanation:
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mark brainlist
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x= 7t (say)
90-x= 11t
x+90-x=90= 7t+11t=18t
90=18t
t=90/18= 10/2= 5
so x= 7×5=35 degrees
and 90-×=90-35=55 degrees
HELLP PLZ I WILL MARK BRIANLIEST PLZZ ASAP
The table shows the ratio between the number of books ordered and their cost: Number of Books Cost (dollars) 7 14 8 16 9 18 Find equivalent ratios when the number of books ordered is 1, 2, and 3. Write them as ordered pairs in the form (x-coordina
Answer:
(1,2)
(2,4)
(3,6)
The point (2.1.-3.5) is reflected over the x-axis, what is the coordinate of that
point of reflection?
Answer:
2nd answer, (2.1,3.5)
Step-by-step explanation:
Reflection over x axis rule:
(x,-y) Change the sign of the y coordinate.
So we basically change the sign of the y axis (-3.5) to get (3.5).
Very much simple and I hope it helps.
Find x and y in the given figure
Answer:
x= 70°, y=40°
Step-by-step explanation:
2x=140
x= 70
y= 180-140= 40
140 + y = 180
y = 180 - 140
y = 40
2x + 40 = 180 (Angle Sum Property)
2x = 180 - 40
2x = 140
x = 140/2
x = 70
X = 70
Y = 40
If you order 3 pizzas, you will get 18 slices of pizza. How many slices are there in one pizza?
Answer:
There are 6 slices on each pizza
Step-by-step explanation:
Because 18 divided by 3 is 6