Answer:
R=1.9
Step-by-step explanation:
you have to distributive property then subtract 7 which gives you 7r=13.3 the divide by 7 to get your R and finally you get R=1.9
solve the simultaneous equation 4x^2 - 9y^2 = 19
2x + 3y= 1
The line 2x +3y = 1 is tangent to 4x^2 -9y^2 = 19
:
Solve the linear equation for y
:
1) y = -2x/3 +1/3
:
substitute for y in the equation of the hyperbole
:
4x^2 -9(-2x/3 +1/3)^2 = 19
:
4x^2 -9(4x^2/9 -4x/9 +1/9) = 19
:
4x^2 -4x^2 +4x -1 = 19
:
4x -20 = 0
:
4x = 20
:
x = 5
:
use equation 1 to get the value of y
:
y = -2(5)/3 +1/3 = -3
:
******************************************************************
solution is x = 5, y = -3 which is the point (5, -3)
:
check the solution
:
hyperbole
:
4(5^2) -9(-3)^2 = 19
:
100 -81 = 19
:
19 = 19
:
Line
:
2(5) +3(-3) = 1
:
10 -9 = 1
:
1 = 1
Mark as brainlist
for every 3 hours of ballet practice, Danielle drinks 2 cups of water. How much will she drink during 7.5 hours of practice?
Answer:
5 cups of water
Step-by-step explanation:
well if we take this and turn it into a ratio, we know the base is 3hrs/2cups
so if we want to find 7.5hrs/x then we just multiply the two fractions and see what we get. so 7.5 divided by 3 is equal to 2.5
so we take the amount of water she drinks in 3hrs which is 2cups of water and we multiply that by 2.5 leaving us with Danielle drinking 5 cups of water in 7.5 hours of ballet practice.
hope this helps if it did please leave a like, rate, and give me the brainliest is possible!
have a great day!
I would assume it would be 4.5 cups
sin(3pi/4)sec(5pi/3)
need help solving this problem pls !! trig
Question 2 (1 point) (11.01 MC) Nina has a piece of fabric measuring 5 yards. How many 1-inch strips can be cut from the fabric? (1 point) a 17 strips b 50 strips c 60 strips d 120 strips
Answer:
180 strips
Step-by-step explanation:
Note that:
1 yard = 36 inches
5 yards = x
Cross Multiply
x = 5 × 36 inches
x = 180 inches
Hence:
1 piece of fabric = 180 inches
How many 1-inch strips can be cut from the fabric?
180 inches = 1 piece of fabric
1 inch = x
x = 180 strips
What is the mass of 2.5 moles of carbon dioxide?
Answer:
110 grams
Step-by-step explanation:
CO2 molecule is made up of Carbon (atomic mass =12) and oxygen (atomic mass=16).
So first finding the mass of 1 molecule of CO2 which is equals to
= mass of 1 carbon atom + masses of 2 oxygen atom, we get
= 12+(16*2)= 12+32= 44 a.m.u.
Now 1 molecule of CO2 has mass 44 amu so mass of 1 mole CO2 will be 44 grams.( 1 a.m.u.=1.6729*10^-33 grams. 1 mole = 6.022*10^23, so 44 a.m.u.=73.6076*10^-33 grams approx. For one mole CO2, 73.6076*10^-33*6.022*10^23 which is approximately equals to 44 grams. )
1 mole CO2= 44grams, so 2.5 moles = 44*2.5= 110 grams
So our answer is 110 grams.
lowkey hope this helped you, good luck whatever you need it for Imaooo
Triangle QRS is located at Q(‐2, 3), R(6, 3), and S(‐2,‐2). Which of the following classifies triangle QRS?
Answer:
Equiangular Triangle (D)
Step-by-step explanation:
The points connect to make a right angle which has all equal angles.
Answer:
it's isosceles!
Step-by-step explanation:
the points form a right triangle, which eliminates equiangular without even thinking about it since equiangular triangles must have all equal angles, which is impossible with a 90 degree angle since all angles of a triangle add up to 180. Equilateral is also eliminated because the side lengths are not equivalent. Scalene is also eliminated because the two sides adjacent to the 90 degree angle are congruent. This leaves isosceles. It is isosceles because it has two congruent side lengths and two congruent angles.
during a holiday sale, a furniture store is offering 12% off all merchandise. after the discount is applied, the customer must pay 5% sales tax on the purchase price. which of these shows the correct final price for the given item? select all that apply
Answer:
Answer Key 7-5 Thru 7-8
Step-by-step explanation:
10
Sandy works at a clothing store. She makes $8 per hour plus earns 10% commission on her sales. She worked 76 hours over the
last two weeks and had a total of $1,913 in sales before taxes.
Which of the following is closest to how much she will earn in hourly wages and commission for those two weeks?
OA. $252
OB. $799
OC. $191
OD
$608
Reset
Submit
of 10
Answer:
B
Step-by-step explanation:
= 8 * 76 =
10% * $1,913 = 191.3
Total = $608 + $191.3
= $799.3 approximately $799
what was the median of a number plot again? its the.........middle right? XD
A band earns $400 for playing at the festival the manager is pay 10% of the money earned and the band is saving 15% of the money earned to put towards Recording expenses how much money is left for the band to split?
A seven sided polygon with angle measures x, x minus 15, 107, x plus 7, 125, 122, and 131 degrees.
What is the value of x?
Answer:
x = 150
Step-by-step explanation:
x + x - 15 + 107 + x + 7 + 125 + 122 + 131 = 630
3x + 180 = 630
3x = 450
x = 150
The value of x is 150
What is a polygon?A polygon is a closed figure made up of three or more line segments connected end to end.
We are given that seven sided polygon with angle measures x, x minus 15, 107, x plus 7, 125, 122, and 131 degree
Therefore, the sum of all the angles are;
x + x - 15 + 107 + x + 7 + 125 + 122 + 131 = 630
3x + 180 = 630
3x = 450
x = 150
Learn more about polygon here;
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Two functions, A and B, are described as follows: Function A y = 9x + 4 Function B The rate of change is 3 and the y-intercept is 4. How much more is the rate of change of function A than the slope of function B? (5 points)
Answer:
The answer to this problem is 6.
Step-by-step explanation:
A=πr2 If the radius (r) of the circle is 3, what is the area in terms of π?
hope it's helpful ❤❤❤❤❤❤
THANK YOU.
find the number of distinct permutations of the word "CALCULATOR."
Given:
The word is "CALCULATOR."
To find:
The number of distinct permutations.
Solution:
In the word "CALCULATOR",
The number of letters = 10
In which, we have 2 C, A, L and 1 U, T, O, R.
We know that,
[tex]^nC_r=\dfrac{n!}{(n-r)!}[/tex]
[tex]^nC_n=\dfrac{n!}{(n-n)!}=n![/tex]
To find the number of distinct permutations of the given word need to divide permutation of all letter by the permutations of repeated letters.
[tex]\text{Total ways}=\dfrac{^{10}C_{10}}{^2C_2\ ^2C_2\ ^2C_2\ ^1C_1\ ^1C_1\ ^1C_1\ ^1C_1}[/tex]
[tex]\text{Total ways}=\dfrac{10!}{2!2!2!1!1!1!1!}[/tex]
[tex]\text{Total ways}=\dfrac{10\times 9\times 8\times 7\times 6\times 5\times 4\times 3\times 2\times 1}{2\times 2\times 2\times 1\times 1\times 1\times 1}[/tex]
[tex]\text{Total ways}=453600[/tex]
Therefore, the number of distinct permutations of the word "CALCULATOR" is 453600.
Number of distinct permutation of the word "CALCULATOR." is 453600
How to solve this problem?
permutations of the word "CALCULATOR"Total number of words in "CALCULATOR" is 10
we find out the words that are repeating
A is repeating twice (2)
C is repeating twice (2)
L is repeating twice (2)
Number of permutations = number of letters !/ repeating letters!
Number of distinct permutation =
[tex]\frac{10!}{2!2!2!} \\\frac{10\cdot9\cdot8\cdot7\cdot6\cdot5\cdot4\cdot3\cdot2\cdot1}{2\cdot2\cdot2} \\453600[/tex]
Number of distinct permutation of the word "CALCULATOR." is 453600
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y
70
What is the sum of the degree measures
of angles x and y?
Answer:
I know for sure, x=110 and the interior of a triangle is 180 degrees added up, so it is definately less than 180 degrees for the 2 angles added up, I am not sure what y is I haven't done geometry for almost 2 years now sorry.
Find z.
5 = z/-4 - 3
Answer:
z = -32
Step-by-step explanation:
5 = z/-4 - 3
Add 3 to both sides
8 = z/-4
Multiply both sides by -4
-32 = z
Can someone pl help. Thx
Answer:
3.10?
Step-by-step explanation:
i dont know sorry if its wrong
a paper drinking cup in the shape of a cone has a height of 12 cenimeters and a diameter of 10 cenimeters. which of the following is closest to the volume of the cup in cubic cenimeters? select one: A) 314cm B) 418cm C) 942cm D) 1,256cm
Answer: Is A
Step-by-step explanation:
I don't know if I am completely correct
4. What is the volume of the cone shown below?
Round to the nearest tenth.
5 ft.
d = 2 ft.
Answer:
5.2 cubic ft
Step-by-step explanation:
took the test
The volume of given cone is 5.23 cubic feet.
What is volume?Volume is the measure of the capacity that an object holds.
Formula for the volume of cone[tex]v = \frac{1}{3} \pi r^{2} h[/tex]
where,
v is the volume of cone
r is the radius of cone
h is the height of cone
According to the question we have
Diameter of cone is 2ft
⇒ radius of the cone = [tex]\frac{2}{2} = 1 feet[/tex]
Height of the cone is 5ft.
Therefore,
The volume of the cone = [tex]\frac{1}{3}(1)\pi( 1)^{2} (5)[/tex]
Volume of cone = [tex]\frac{1}{3} (3.14)(1)(5) = 5.23 cubic feet[/tex]
Hence, hence the volume of given cone is 5.23 cubic feet.
Learn more about the volume of cone here:
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(3x)^3
(power of a product rule)
Answer:
Step-by-step explanation:
Here is your workings
(3x)^3 Apply the rule of exponents
Step 2
(3x)^3=3^3x^3 Simplify
Step 3
3^2=27 Solve
27x^3
the diameter of a circle is 12 feet. what is the area?
Answer: Area=113.1 ft²
Step-by-step explanation:
Area equation= πr2
1/4*π*d^2
1/4*π*12^2≈113.09734ft²
113.1 ft²
Eloise has 293 books that she must package into boxes. Each box must hold 8 books. Eloise divides 293 by 8 and gets an answer of 36 R 5.
What is the correct interpretation of R 5 for this situation?
Answer:
it means there are five books left, and the 36 boxes are filled
Tyler bought 2 tickets to a basketball game on the website Game Finder. Each ticket cost $65, and the website charged a convenience fee that was a small percent of the ticket cost.
If Tyler’s total bill came to $132.60, what percent was the convenience fee?
Answer: 1.961%
Step-by-step explanation:
yall please help i am struggling
Answer:
I think it might be around 93
Step-by-step explanation:
4s - (s - 12) = 1- (1 - 6s)?
Answer:
s=-4
Step-by-step explanation:
combine like terms on each side and get 3s-12=6ssubtract 3s from both sides to get -12=3sdivide both sides by three and get s=-4Please help, due Tomorrow. Will mark brainlist if correct
Answer:
Its non-linear and decreasing
Step-by-step explanation:
Answer:
( -∞,2)
Step-by-step explanation:
The function is decreasing from the left up until the vertex
The graph of y = e^x is transformed as shown in the graph below. Which equation represents the transformed
function?
y=e^x+3.
The given graph of the function y = e^x
he transformation occur when we add c to the parent function y = e^x giving us a vertical shift c unit in the same direction as the sign.
The y axis of a coordinate plane is the vertical axis. When a function shifts vertically, the value of y changes.
The given parent function: y = e^x,
we can now graph the vertical shift alongside i.e, c=3
Then, the upward shift function is, y = e^x + c
Substitute the value of c=3,
then, the transformed equation becomes, y = e^x + 3
as it goes through (0,4).
∴The equation y = e^x + 3 represents the transformed function.
Answer:
y=e^x+3.
Step-by-step explanation:
Nicole had two days to write a paper for
her English class. She wrote 3 pages the
first day and 4į pages the second day.
How many total pages did Nicole write for
her paper?
Give your answer as a mixed number in simplest form.
Enter the number that belongs in the green box.
Ok
Answer:
7/1
Step-by-step explanation:
7 over 1 equals 7 which is the answer.
I need help fast
If triangle RST cong triangle XYZ , then ST is congruent to which of the following?
Raj got 51 out of 60 points on his quiz what percentage of the total points did raj get