Answer:
Solving an equation means finding the value or values for which the two expressions are equal. ... An identity is an equation which is always true, no matter what values are substituted.
A trig identity is an equation that is true for all values of x;
For example:
sin²x + cos²x will always equal 1 no matter what the value of x.
There are some equations considered to be identities that are in fact not true all the time.
tan(2x) = 2tanx/(1 - tan²x) is not true when x = π/2 (right side is undefined).
A conditional equation is one that is true for a subset of the real numbers, i.e. for certain values of x, but not all.
For example:
sin²x - 1 = 0 is only true for some values of x.
sin²x = 1
sinx = ±√(1) = ±1
sinx = 1 or sinx = -1
x = sin-11 or x = sin-1(-1)
x = π/2 + 2kπ, k any integer or x = 3π/2 + 2kπ, k any integer (this can be condensed, but left this way for emphasis).
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equivalent expression 7s+8t+10s+12t
Answer:
17s+20t
Step-by-step explanation:
This is more question of math
Answer: 7 I think
Step-by-step explanation:
NEED ASAP
a board that is 3 yards long is to be cut into 4/5 equal-size pieces. how many whole pieces can be cut?
Answer:
Only 3 boards can be cut if they are whole
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Simply the following expression: 8x + 5y - 4z + 9y - 3x + 13z
Answer:
5x+14y+9z
Step-by-step explanation:
combine 8x and -3x to get 5x
combine 5y and 9y to get 13y
combine -4z and 13z to get 9z
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Answer:
i believe it b 75% sure i sorry if i can't help
Step-by-step explanation:
What is the relationship between the volume of a rectangular prism and a rectangular pyramid having both congruent bases and heights?
40 points. Factor the following polynomial.
49y2 – x2
A.
(7y – x)(7y + x)
B.
(7y + x)2
C.
(7y – x)2
D.
does not factor
Answer:
A
Step-by-step explanation:
49y² - x² ← is a difference of squares and factors in general as
a² - b² = (a - b)(a + b) , then
49y² - x²
= (7y)² - x²
= (7y - x )(7y + x) → A
Hey can you help me fast!!!
Answer:
40 square feet
Step-by-step explanation:
I gotcha bro
4 x 12 = 48
48 - 3 x 2 - 1 x 2 = 48 - 6 - 2 = 40
How do you find the value of x in the triangle?
To find the value of x in a triangle, you need to subtract the sum of the two angles from 180 degrees. Know that the sum of all the angles of a triangle will always equals 180 degrees. Then write down the difference of subtracting the sum of the two angles from 180 degrees and that would equal the value of x.
I hope this helped in some way, if it didn't, im so sorry.
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don’t answer just for points or i’ll report you.
Answer:
8.3
Step-by-step explanation:
8.3 - 8.3 = 0
Answer:
8.3+(-8.3) would equal 0 so the answer should be 8.3
Meaning of the word break-even
Answer:
Breakeven is often used in finance, it means the point of reaching a balance.
Step-by-step explanation:
If the Kahn family brings in $5,000 each month and their housing is 32% of their monthly budget.
How much is their housing/mortgage?
Answer:
Their Hosing/Mortgage is $1,600
Step-by-step explanation:
5,000 / 100 = 50
50 x 32 = 1600
can someone help me
Answer:
The option that is down and right
Step-by-step explanation:
4x means there will be 4 of that variable which is x and the equal to is 24 which is at the bottom
Solve the following equation by completing the square. x2-18x+78=0
25 points need ASAP
Write and solve a proportion to answer the question.
17 out of 25 marbles in a bag are red. What percent of the marbles are red? Show work,
-Answers for the points will result in a report-
Answer:
68%
Step-by-step explanation:
17 divided by 25 =0.68
make the decimal into a precent
Answer:
5℅
Step-by-step explanation:
Hope I helped, have g'day!
What is 73/48 simplified
Answer:
The Decimal form is: 1.52083 (and the 3 keeps going and going)
Is mixed number it is: 1 25/48.
Zena saves $5 for every $30 she earns. Which of these describes the rate at which Zena saves?
A $1 saved for every $5 earned
B. $1 saved for every $6 earned
C. $6 saved for every $5 earned
D. $0.60 saved for every $10 earned
Answer:
I think it is c because yah
What is the equation of a circle with center (−3, 0) and radius 20?
Answer:
(x + 3)^2 + y^2 = 20^2
Step-by-step explanation:
If the center is (-3, 0), then the standard equation of a circle, (x - h)^2 + (y - k)^2 = r^2 becomes (x + 3)^2 + (y - 0)^2 = 20^2, or
(x + 3)^2 + y^2 = 20^2
If x = 2, y = 3 and z = 4, calculate the value of each of the following algebraic expression: 3x + 3y =
EASY!!!!!! ILL MARK BRAINLIEST
Answer:
-2a (small 2) + 4a - 8
Step-by-step explanation:
X 2. Gi'shon needs to complete the expressions below to factor x2 + x - 56. 0/1 Which of the following must be true? * ( x1)x___)
F. Both expressions will include subtraction.
G. The sum of the values in the blanks should be 1. X Х
H. The product of the values in the blanks should be 56.
J. The values in the blanks will be the same number but opposite signs
Answer: gggggg
g the sum of values are 1
Step-by-step explanation: 8-7=1
The factorized form of the expression is A = ( x - 7 ) ( x + 8 ) and sum of the values in the blanks should be 1
What is Factorizing?Brackets should be expanded in the following ways to factorize an expression
For an expression of the form A = a ( b + c ) , the expanded version is given by A = ab + ac, i.e., multiply the term outside the bracket by everything inside the bracket
For an expression of the form A = ( a + b ) ( c + d ) , the expanded version is given by A = ac + ad + bc + bd, in other words everything in the first bracket should be multiplied by everything in the second.
Given data ,
Let the expression be represented as A
Now , the value of A is
A = x² + x - 56
On factorizing the equation , we get
A = x² + 8x - 7x - 56
8x - 7x = 1
So , A = ( x - 7 ) ( x + 8 )
Hence , the expression is A = ( x - 7 ) ( x + 8 )
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Solve x + 20 = 24.
The solution is x =
Answer:
4
Step-by-step explanation:
24 - 20 = 4
Find the mean of the following data set
41,7, 39, 11, 23, 31, 27, 7, 12
0 29
0 198
0 99
022
Answer:
22
Step-by-step explanation:
Add al the digits (198) then divide by how many digits there are (9)
198÷9=22
What is the measurement of Angle x?
Answer:
A. 95 degrees
Step-by-step explanation:
Both angles should add up to 180
85+_95_=180
A bag contains 30 ping-pong balls, each with a different number written on it from 1 to 30. What is the probability of selecting a ball with a number that is less than 13?
Answer:
...
Step-by-step explanation:
Answer:
so you have a 40% chance or 2/5 chance
Step-by-step explanation:
30 numbers in total
12 are less than 13
so you have a 12/30
simplify
2/5 = 0.4 or 40%
Solve the system of equations.
14x + 5y = 31
2x – 3y = -29
2 =
y =
Answer:
X,y=83/52 ,45/26
Step-by-step explanation:
just look up your answer and you will find the step by step. Hopefully this helped :)
Which is the best simplification of (2^4 x 3*2)/(2 x 3)?
Answer:
16
Step-by-step explanation:
I dont really understand this question. I WILL GIVE BRAINIEST thank you to anyone who helps:)
Answer:12 out of 9 chances
Step-by-step explanation:
Answer: 9/24 or 3/8(simplified).
Step-by-step explanation:
Okay first let's break it down.
The spinner has a 1/4 chance of landing on blue.
The spinner has a 1/2 chance of landing on red.
The spinner has a 1/4 chance of landing on green.
The spinner has a 3/4 chance of landing on red or blue
The spinner has a 3/4 chance of landing on red or green.
The spinner has a 1/2 chance of landing on blue or green.
A 6-sided die has a 1/2 chance of landing on either even or odd.
The question first asks the probability of spinning a red or blue.
So first, you need to know how many parts of the spinner of the four sections are red and blue. It's 3/4. There are 3 even numbers on a six-sided die so that's 3/6 or 1/2. Next, multiply these probabilities to get 9/24 or 3/8.
URGENT!!
A rectangular prism made of 1/4-inch cubes is shown.
What is the volume of the rectangular prism? Do not include units in your answer.
Answer:
1 1/2
Step-by-step explanation:
find the L W H and multiply it and divide by 1/4.
Hope this helps :)
The volume of the rectangular prism is 24 inches cube.
What is volume?Volume is the scalar quantity of any object that specified occupied space in 3D.
For example, the space in our room is referred to as volume.
Volume has units of cube example meter³,cm³, etc.
The volume of cuboid = length × height × width.
The volume of the cube = side³.
Given the rectangular prism with a bunch of small cubes whose volume is 1/4 inches³.
Number of small cubes = 8 × 4 × 3 = 96
The volume of the complete prism = Volume of 1 cube × the Number of small cubes.
The volume of the complete prism = 1/4 × 96
The volume of the complete prism = 26 inch³.
Hence "The volume of the rectangular prism is 24 inches cube".
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