Answer:
Honestly agreed, i feel like the smaller grades k- 6th grade are useful. where yoh learn to add, multiply, read time and such.
Answer:
Yes I agree! And it gets annoying when your parents bug you about your grades as if they have never been in a tough spot. ️
Step-by-step explanation:
Find the volume of the triangular prism.
The volume of the triangular prism is 4.5ft³
What is volume of triangular prism?A prism is a polyhedron comprising an n-sided polygon base, a second base which is a translated copy of the first, and n other faces, necessarily all parallelograms, joining corresponding sides of the two bases.
The volume of a triangular prism = area of the triangular base × height
area of base = 1/2 b× h
12in = 1foot
1 in = 1/12 foot
18 in = 1/12 × 18
= 1.5 feet
= 1/2 × 1.5× 2
= 1.5 ft²
Height of the prism = 3ft
Volume of the triangular prism = 1.5 × 3
= 4.5ft³
Therefore the volume of the triangular prism is 4.5 ft³
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2. 7 cm In triangle ABC, AC = 7 cm, BC = 10 cm, angle ACB = 73° C 73° 10 cm Calculate the length of AB Give your answer correct to 3 significant figures. Diagram NOT accurately drawn B (Total 3 marks
Answer:
AB = 10.398
Step-by-step explanation:
By cosine rule, we have:
AB² = AC² + BC² - 2(AC)(BC)cos(ACB)
⇒ AB² = 7² + 10² - 2(7)(10)cos(73)
⇒ AB² = 49 + 100 - 140cos(73)
⇒ AB² = 149 - 140cos(73)
⇒ AB² = 149 - 140cos(73)
⇒ AB² = 149 - 140(0.292)
⇒ AB² = 149 - 40.88
⇒ AB² = 108.12
⇒ AB = √(108.12)
⇒ AB = 10.398
A company that sells paper has a tiered pricing model based on how much paper you buy. If you buy less than 10 reams, they charge you $7 per ream and a shipping cost of $8. If you buy 10 or more reams but less than 20 reams, they charge you $6 per ream and a shipping cost of $16. If you buy 20 or more reams, they charge you $6 per ream and shipping is free.
a. Write a function that models the price in terms of the number of reams bought.
b. What is the domain of the function?
c. What is the range of the function?
d. How much will it cost to buy 25 reams of paper?
f. How much paper can you buy for $60?
The function can be defined as price = 6x
It will cost $150 to buy 25 reams of paper.
How to explain the functionThe domain of the function is all non-negative real numbers, since the number of reams bought cannot be negative.
The range of the function is all non-negative real numbers, since the price cannot be negative.
Fir 25 items, price = 6(25) = $150
It will cost $150 to buy 25 reams of paper.
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PLS HELP will give brainliest-
find a unit vector in the same direction as the vector (-4,7)
To find out the unit vector in the same direction of other vector, we can calculate the magnitude of its vector and then divide all coordinates by the magnitude, remember that the definition of a unit vector is that its magnitude is 1.
We can calculate the magnitude of a 2D vector as
\(\Large\displaystyle\text{$\begin{gathered}v = \left(x, y\right)\\ \\\|v\| = \sqrt{x^2 + y^2}\end{gathered}$}\)
I'll call the vector (-4, 7) as v, so the magnitude of v is
\(\Large\displaystyle\text{$\begin{gathered}v = \left(-4, 7\right)\\ \\\|v\| = \sqrt{\left(-4\right)^2 + \left(7\right)^2}\\ \\\|v\| = \sqrt{65}\\ \\\end{gathered}$}\)
So the unit vector that i'll call as v with an hat is
\(\Large\displaystyle\text{$\begin{gathered}\hat{v} = \frac{v}{\|v\|}\end{gathered}$}\)
The vector divided by its magnitude, when we divide a vector by a scalar it's the same as divide all the coordinates, so
\(\Large\displaystyle\text{$\begin{gathered}\hat{v} = \frac{v}{\|v\|}\\ \\\hat{v} = \frac{v}{\sqrt{65}}\\ \\\hat{v} = \frac{\left(-4, 7\right)}{\sqrt{65}}\\ \\ \boxed{\hat{v} = \left(-\frac{4}{\sqrt{65}}, \frac{7}{\sqrt{65}}\right)}\end{gathered}$}\)
We can also remove the square root from the denominator, then
\(\Large\displaystyle\text{$\begin{gathered}\hat{v} = \left(-\frac{4}{\sqrt{65}}, \frac{7}{\sqrt{65}}\right)\\ \\\hat{v} = \left(-\frac{4}{\sqrt{65}}\frac{\sqrt{65}}{\sqrt{65}}, \frac{7}{\sqrt{65}}\frac{\sqrt{65}}{\sqrt{65}}\right)\\ \\\hat{v} = \left(-\frac{4\sqrt{65}}{65}, \frac{7\sqrt{65}}{65}\right)\\ \\\end{gathered}$}\)
Use what you prefer!
Hope you liked it
Questions? Ask me in the comments
DO 11. Find the slope of the line that passes through the points
(-4, 7/2) and (3, -21/10)
Answer:
-4/5
Step-by-step explanation:
The editors of a local
newspaper went to lunch to
celebrate birthdays. The
lunch costs $17.8.25 and they
left a 15% tip. What was the
cost of the meal?
Answer:
$111.52
Step-by-step explanation:
You have to divide your total amount by 1.15 and that will give you your answer. To check your work you can add your answer and 15% of your answer together. {111.52+(111.52x0.15)=128.25}
Evaluate the expression: –32 – (–52) – (15 – 33).
The result correct of this expression is 38
-
In a numeric expression, we first resolve the numbers that are in symbol, such as:
parentheses, square brackets and braces.The signs calculated in order are:
multiplication/division, addition/subtraction.\( \\ \)
The sign rules are- ( - ) = +
+ ( + ) = +
- ( + ) = -
+ ( - ) = -
\( \\ \)
Resolution\( \large \sf = - 32 - ( - 52) - (15 - 33)\)
\( \large \sf = - 32 + 52 - (15 - 33)\)
\( \large \sf = - 32 + 52 - ( - 18)\)
\( \large \sf = - 32 + 52 + 18\)
\( \large \sf = - 32 + 70\)
\( \pink{ \boxed{ \large \sf = 38}}\)
So, the answer correct is 38
What is the length of the hypotenuse of the triangle below?
45°
h
5V2
45°
90°
52
The length of the hypotenuse of the triangle whose other two sides are of the length 5√2 units is given by: Option B: 10 units.
What is Pythagoras Theorem?If ABC is a triangle with AC as the hypotenuse and angle B with 90 degrees then we have:
\(|AC|^2 = |AB|^2 + |BC|^2\)
where |AB| = length of line segment AB. (AB and BC are rest of the two sides of that triangle ABC, AC being the hypotenuse).
For this case, consider the figure attached below.
Then, we are given the facts that:
Triangle ABC is a right angled triangle with right angle at vertex BThe lengths of non-hypotenuse sides AB and BC are 5√2 unitsThe length of the hypotenuse AC, denoted by h is to be found.Using the Pythagoras theorem, we get:
\(|AC|^2 = |AB|^2 + |BC|^2\\\\h^2 = (5\sqrt{2})^2 + (5\sqrt{2})^2 \\\\h^2 = 2(5\sqrt{2}))^2\)
Taking root, we get:
\(h = \sqrt{2 (5\sqrt{2})^2}\) (only positive root since h is denoting length, which is a non-negative quantity).
Thus, we get:
\(h = \sqrt{2 (5\sqrt{2})^2} = \sqrt{(5\sqrt{2})^2} \times \sqrt{2} = (5\sqrt{2}) \times \sqrt{2} = 5 \times (\sqrt{2})^2 = 5 \times 2 \\\\h= 10 \: \rm units\)
(square cancelled the square root).
Thus, the length of the hypotenuse of the triangle whose other two sides are of the length 5√2 units is given by: Option B: 10 units.
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Answer:
10 units.
Step-by-step explanation:
just took the quiz
Simplify: (8 2/3)^4
Answer:
8^8/3
Step-by-step
PLEASE HELP!!!!! PLEASE!!!!
I need all of parts 1, 2, and 3
Please don't do number 6 :)
Part I
The domain of the graph is represented by 0 ≤ x ≤ 12In terms of the problem the domain means the time in hours taken to notice change in temperature in degrees Celsius.Part II
The range of the graph is represented by -2 ≤ x ≤ 4In terms of the problem the range means the temperature in degrees Celsius noted during the time spent, the time is in hoursPart III
The function is decreasing from 0 to 3 hours, this is the point in the x axis that is mathematically represented as 0 ≤ x ≤ 3.This decreasing interval means that it is getting cold, since the temperature is dropping and temperature drop implies getting cold.What temperature?This a term that represents the amount of how hot or cold a substance is the unit used to measure temperature as regards the question is degrees Celsius.
The range of the graph is temperature while the domain is the time
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A force of 200n is inclined at an angle of 120° to another force P. The angle between the 200n force and the resultant force is 50°. Find the magnitude of the force P and the resultant of the two force.?
Answers:
Magnitude of force P = 163.041494
Magnitude of resultant force = 184.320997
Values are approximate. Units are in newtons.
====================================================
Explanation:
Let for P be pulled directly to the east. The vector for this force is <x, 0> where x is positive.
The 200 newton force has the vector <200*cos(120), 200*sin(120)>
The resultant vector is <x+200*cos(120),200*sin(120)>. Each component is the sum of the corresponding components of <x,0> and <200*cos(120), 200*sin(120)>
The resultant vector is also <r*cos(70),r*sin(70)>. Note how 70+50 = 120. The 50 degree angle is known, so we effectively do 120-50 = 70 to find the angle of the resultant vector with the positive x axis.
------------------------------
The resultant vector expressions we found were
<r*cos(70),r*sin(70)><x+200*cos(120),200*sin(120)>Equate the y components of each resultant vector expression. Solve for r
r*sin(70) = 200*sin(120)
r = 200*sin(120)/sin(70)
r = 184.320997021376
Make sure your calculator is in degree mode.
Let's round this r value to 6 decimal places to simplify things a bit
r = 184.320997
------------------------------
Now equate the x components of each resultant vector expression, plug in the r value we found, and solve for x
x+200*cos(120) = r*cos(70)
x+200*cos(120) = 184.320997*cos(70)
x = 184.320997*cos(70) - 200*cos(120)
x = 163.041494
this value is approximate just like r is as well
------------------------------
The magnitude of force P is
magnitude = sqrt(x^2+y^2)
magnitude = sqrt(x^2+0^2)
magnitude = sqrt((163.041494)^2+0^2)
magnitude = 163.041494
Which is equal to the x value. This applies because y = 0.
-----------------------------
The magnitude of the resultant is r = 184.320997 which we found earlier
Find the complete factored form of the
polynomial :
-8m²n-7m² nª
Enter the correct answer.
The polynomial -8m²n - 7m²n can be factored using the common factor -m²n. The complete factored form of the polynomial is (-m²n) (8 + 7a).
To find the complete factored form of the polynomial -8m²n - 7m²n, we can factor out common terms from both the terms. The common factor in the terms -8m²n and -7m²n is -m²n. We can write the polynomial as:
-8m²n - 7m²n = (-m²n) (8 + 7a)
Therefore, the complete factored form of the polynomial -8m²n - 7m²n is (-m²n) (8 + 7a). This expression represents the original polynomial in a multiplied form. We can expand this expression using distributive law to verify that it is equivalent to the original polynomial.
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Find the value for the function.
C
Find f(-x) when f(x)
X/ X^2 + 2
Step-by-step explanation:
For the what value of C is the function f(x) = when?
c. x= -2
3. x= 1
x^2 -4 /(x+2)(x-3) otherwise
continuous at x= -2 ?
A bag contains 30 cookies: 9 vanilla, 9 chocolate, and 12 oatmeal. What is the probability that a chocolate is randomly selected? A).30 B).33 C).40 D).60
Answer:
D:60
Step-by-step explanation:
Given f(x)=4x^2-5x+3 and g(x)=2x-7, what is f(x)+g(x) ?
Answer:
Step-by-step explanation:
4x^2 - 5x + 3 + 2x - 7
4x^2 - 3x - 4
For each function, find f(−x) and −f(x) and then determine whether it is even, odd, or neither. Justify your answer. f(x)=2x^2-7x+10
The function f(x) = 2x² - 7x + 10 is an odd function.
f(-x) = 2(-x)² - 7(-x) + 10
= 2x² + 7x + 10
-f(x) = -[2x²- 7x + 10]
= -2x² + 7x - 10
To determine whether the function f(x) = 2x² - 7x + 10 is even, odd, or neither, we compare f(-x) and -f(x).
1. f(-x) = 2x² + 7x + 10
2. -f(x) = -2x² + 7x - 10
To determine if f(-x) = -f(x) (even function), we substitute -x for x in f(x) and check if the equation holds.
1. f(-x) = 2x² + 7x + 10
= f(x) (not equal to -f(x))
Since f(-x) is not equal to -f(x), the function is not even.
Next, to determine if f(-x) = -f(x) (odd function), we substitute -x for x in f(x) and check if the equation holds.
2. -f(x) = -2x² + 7x - 10
= -(2x² - 7x + 10)
= -(f(x))
Since -f(x) is equal to -(f(x)), the function is odd.
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The following cylinder has a height of 7.2 in. and diameter of 6.8 in.
Cylinder with measures described in text.
What is the volume of the cylinder? Remember, the diameter of a circle is two times its radius.
Use 3.14 for π and round your answer to the nearest tenth.
Answer:
598.16
Step-by-step explanation:
Eh you should have the formula if not I can't really type it but ,trust, the answer is 598.16 in²
Answer:
261.3 in.
Step-by-step explanation:
O
X
y
X
y
X
y
X
y
0
2
0
0
-1
0
1
0
5
2
113
1
2
2
8
4
WIN
3
3
4
11
2.5 -2.5-7.5 -12.5
6
W/W
5
6
Select all table’s that represent proportional relationship between x and y
All tables that represent proportional relationship between x and y are:
B. table B.
E. table E.
What is a proportional relationship?In Mathematics and Geometry, a proportional relationship is a type of relationship that produces equivalent ratios and it can be modeled or represented by the following mathematical equation:
y = kx
Where:
y represents the x-variable.x represents the y-variable.k is the constant of proportionality.Next, we would determine the constant of proportionality (k) by using various data points as follows:
Constant of proportionality, k = y/x
Constant of proportionality, k = (20 - 15)/(10 - 5) = (5 - 4)/(1 - 0)
Constant of proportionality, k = 1.
Therefore, the required linear equation is given by;
y = kx
y = x
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Missing information:
The question is incomplete and the complete question is shown in the attached picture.
What is the perimeter of the shape below? Use 3.14 for pi. Answer with numbers only, no units.
DO NOT ROUND THE ANSWER
Step-by-step explanation:
The circumference of a WHOLE circle = pi * d
you have 1/2 of this and d = 10 ft
so 1/2 pi * 10 PLUS the two straight sides + 8+6
1/2 pi * 10 + 8 + 6
5 pi + 8 + 6
5 * 3.14 + 14 = 29.7 ft
Simplify the following problem.
Answer: I think the answer is c
Step-by-step explanation:
tell me if im wrong :(
I need help asappppppp
Answer:150?
Step-by-step explanation:
Drag the tiles to the boxes to form correct pairs. Not all tiles will be used.
Match the function with its inverse.
The correct pairs of the functions and their inverses are given by the image at the end of the answer.
How to find the inverse function?To find the inverse function, we exchange x and y in the original function, then isolate y.
The first function that we want to find the inverse is:
f(x) = (2x - 1)/(x + 2).
Hence:
x = (2y - 1)/(y + 2)
(y + 2)x = 2y - 1
xy + 2x = 2y - 1
xy - 2y = -1 - 2x
y(x - 2) = -1 - 2x
y = (-1 - 2x)/(x - 2) (which is the inverse function).
The second function which we want to find the inverse is:
y = (x + 2)/(-2x + 1)
Then:
x = (y + 2)/(-2y + 1)
x(-2y + 1) = y + 2
-2yx + x = y + 2
-2yx - y = 2 - x
-y(2x + 1) = 2 - x
y = (x - 2)/(2x + 1) (which is the inverse function).
The third function which we want to find the inverse is:
y = (x - 1)/(2x + 1)
Then:
x = (y - 1)/(2y + 1)
2yx + x = y - 1
2yx - y = -1 - x
y(2x - 1) = -1 - x
y = (-x - 1)/(2x - 1) (which is the inverse function).
The fourth function which we want to find the inverse is:
y = (2x + 1)/(2x - 1)
Then:
x = (2y + 1)(2y - 1)
2yx - x = 2y + 1
2yx - 2y = 1 + x
2y(x - 1) = (1 + x)
y = (x + 1)/(2(x - 1)) (which is the inverse function).
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Explain how to find 20% of 160
Answer: 20% of 160 is 32.
Step-by-step explanation:
The percentage is from the word percent which means one part in a hundred. It is a part of the base or the whole determined by the rate. Usually, the percentage is smaller than the base. However, there are also cases where the percentage is greater than the base. This happens when the percent is greater than 100%.
To find the percentage, you have to multiply the base and the rate. The base is the 100% or original amount or the whole while the rate is the ratio of the percentage to the base and it has the percent sign (%). Remember that you have to convert the rate to a decimal number by moving the decimal point twice to the left.
Let us now find the 20% of 160.
20% = 0.2
percentage = 160 × 0.2
= 32
Two friends are standing in opposite corners of a rectangular courtyard the dimensions of the courtyard or 12' x 25' how far apart are the friends
Answer:
B 27.73
Step-by-step explanation:
Use the Pythagorean theorem. It easiest to think of the distance between the two friends as a triangle in the rectangle. One side is 12ft and the other is 25ft.
12^2+25ft^2=769
The square root of 769 is 27.73
2 3/4 of 500grams in step by step calculator
Answer:
To calculate 2 3/4 of 500 grams, follow these steps:
1. Convert the mixed number to an improper fraction:
2 3/4 = (2 x 4 + 3)/4 = 11/4
2. Multiply the improper fraction by 500:
11/4 x 500 = (11 x 500)/4 = 2,750/4
3. Simplify the fraction by dividing the numerator and denominator by their greatest common factor, which is 2:
2,750/4 = (2 x 1,375)/(2 x 2) = 1,375/2
Therefore, 2 3/4 of 500 grams is equal to 1,375/2 grams or 687.5 grams.
Step-by-step explanation:
Solve for u. -5u/8=-10
Answer:
u 16
Step-by-step explanation:
The sum of two numbers is 32. Five times the smaller number minus twice the larger number is 195.What are the numbers ?
Answer:
37 and -5Step-by-step explanation:
Le the numbers be x and y
Then we have equations:
x + y = 325x - 2y = 195As per the first equation:
y = 32- xSubstitute in the second equation
5x - 2(32 - x) = 1955x + 2x - 64 = 1957x = 195 + 647x = 259x = 259/7x = 37Then finding the value of y
y = 23 - 37 = -5A bank manager wants to encourage new customers to open accounts with principals of at least $3500. He decides to make a poster advertising a simple interest rate of 3%. What must the principal be if the bank manager also wants to advertise that one can earn $10 the first month?
The principal if the bank manager also wants to advertise that one can earn $10 the first month is $4000.
How to calculate the principal?From the information, the simple interest is $10 and the rate is illustrated as 3%.
The formula for the simple interest in a month is illustrated as:
S = (p × r × t/12 / 100)
r = rate
t = time
S = interest
Place the values in the formula:
10 = p × 3 × 1 / 100 × 12
10 = 3p/1200
Cross multiply
3p = 12000
Divide
p = 12000/3
p = 4000
The principal is $4000.
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The Venn diagram below shows information about the number of items in sets T and V.
An item is chosen at random.
Given that P(TIV) = j
The value of x from the venn diagram if P(T | V) = 1/5 is 16
How to determine the value of x
From the question, we have the following parameters that can be used in our computation:
The venn diagram
From the venn diagram, we have the following probability values
P(T | V) = (x - 4)/(3x + x - 4)
Evaluate the like terms
So, we have
P(T | V) = (x - 4)/(4x - 4)
From the question, we have
P(T | V) = 1/5
This means that
(x - 4)/(4x - 4) = 1/5
When evaluated, we have
x = 16
Hence, the value of x is 16
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P
N
0
O A. m2 MOP = 62
m2 NOP= 62
B. mz MOP = 61
m 2 NOP = 61
O C. m MOP = 48
m2 NOP = 72
D. m2 MOP= 122
m2 NOP = 122
Answer:
MOP = 62
NOP = 62
Step-by-step explanation:
sorry the answer is tilted