Answer:
-1
Step-by-step explanation:
write it in the following manner:
-3x + 7 - 5x = 15
-8x + 7 = 15
-8x = 8
x = -1
Thus, the number has to be smaller than -1.
The smallest integer that makes the given inequality true is 0.
What is Linear Inequalities?Linear inequalities are defined as those expressions which are connected by inequality signs like >, <, ≤, ≥ and ≠ and the value of the exponent of the variable is 1.
Given inequality,
-3x + 7 - 5x < 15
We have to find the value of x.
(-3x - 5x) + 7 < 15
-8x < 8
Dividing whole sides by -1, the inequality sign changes.
x > -1
Smallest possible value is 0.
Hence the smallest posible value is 0.
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4. Denise thinks of a number, multiplies by 7, and then subtracts 2 from the 5 points
result. If the number Denise thinks of is represented by t, how can this be
written using algebra
Answer:
(t x 7) 5 - 2
Step-by-step explanation:
I think that is how it would look, I hope it helps!
Prove the following using a proof by contradiction. The number log 10 (7) is irrational.
We can conclude that log10(7) is irrational using a proof by contradiction with the steps given below.
To prove that log10(7) is irrational using a proof by contradiction, we start by assuming that log10(7) is rational, which means that it can be expressed as a ratio of two integers p and q:
log10(7) = p / q
where p and q have no common factors.
We can then use the definition of logarithms to rewrite this equation in exponential form:
10^(p/q) = 7
Next, we raise both sides of the equation to the power of q to eliminate the denominator:
10^p = 7^q
Now, we can assume the opposite, which is that log10(7) is rational and then find a contradiction. If log10(7) is rational, then 10^p and 7^q are also integers. However, 7 and 10 are relatively prime, which means that they do not share any common factors.
This implies that the prime factorization of 7^q cannot include any factors of 2 or 5, which are the prime factors of 10. But since 10^p is an integer, it must have a prime factorization that includes at least one factor of 2 or 5.
Therefore, we have arrived at a contradiction, which shows that our assumption that log10(7) is rational is false. Hence, we can conclude that log10(7) is irrational.
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12 divided into a number is wat
Answer:
x
Step-by-step explanation:
Answer:
12 divided by 1 can be 12. If thats what you mean and if not, just tell me by explaining with more detail
Step-by-step explanation:
Eevaluate the integral. (use c for the constant of integration.) ∫ 2tan^4(x) sec^6(x) dx
Putting it all together, we get:
∫ 2tan^4(x) sec^6(x) dx = (2/5)tan^5(x) - (2/3)tan^3(x) + 4sec^3(x) - 4sec^2(x) + C
To evaluate this integral, we can use the substitution u = sec(x), which means du/dx = sec(x)tan(x) and dx = du/u^2.
Using this substitution, we can rewrite the integral as:
∫ 2tan^4(x) sec^6(x) dx = ∫ 2tan^4(x) sec^4(x) * sec^2(x) dx
= ∫ 2tan^4(x) (u^2 - 1)^2 du/u^2
Expanding (u^2 - 1)^2 and simplifying, we get:
∫ 2tan^4(x) (u^4 - 2u^2 + 1) du/u^2
= ∫ 2tan^4(x) u^2 du - ∫ 4tan^4(x) du + ∫ 2tan^4(x) du/u^2
The first integral can be evaluated using u = sec(x), giving:
∫ 2tan^4(x) u^2 du = ∫ 2(sec^2(x) - 1) tan^4(x) sec(x)tan(x) dx
= ∫ 2(sec^2(x) - 1) tan^5(x) dx
= (2/5)tan^5(x) - (2/3)tan^3(x) + C
The second integral can be simplified using the identity tan^2(x) = sec^2(x) - 1, giving:
∫ 4tan^4(x) du = ∫ 4(tan^2(x))^2 du = ∫ 4(sec^2(x) - 1)^2 du
= ∫ 4(u^2 - 2u + 1) du = 4u^3/3 - 4u^2 + 4u + C
Finally, the third integral can be evaluated using the substitution w = tan(x), which means dw/dx = sec^2(x) and dx = dw/sec^2(x).
Using this substitution, we get:
∫ 2tan^4(x) du/u^2 = ∫ 2w^4 dw
= (2/5)tan^5(x) + C
Putting it all together, we get:
∫ 2tan^4(x) sec^6(x) dx = (2/5)tan^5(x) - (2/3)tan^3(x) + 4sec^3(x) - 4sec^2(x) + C
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A car was purchased for $24,000. Its value is predicted to decay exponentially, decreasing by 13% each year. Write an equation to determine the value of the car.
Answer:
y= P(0.87)^t
Step-by-step explanation:
Given data
Price P= $24,000
Rate of decay in price= 13%
The expression in terms of y, p and t is
y=P(1-r)^t
y= P(1-0.13)t
y= P(0.87)^t
By what number should we multiply -39,so that the product may be 24
At a carnival, a customer notices that a prize wheel has 5 equal parts, one of which is labeled "winner. " She would like to conduct a simulation to determine how many spins it would take for the wheel to land on "winner. " She assigns the digits to the outcomes.
0, 1 = winner
2-9 = not a winner
How can a random number table be used to simulate one trial of this situation?
A) Read 100 single-digit numbers. Count the number of 0s and 1s.
B) Read single-digit numbers until finding the first 0 or 1. Count the number of 0s and 1s.
C) Read single-digit numbers until finding the first 0 or 1. Count the number of digits needed to get the first 0 or 1.
D) Read 100 single-digit numbers. Count the number of digits needed to get a 0 and the number of digits needed to get a 1
Considering the probability concept, a random number table could be used as follows:
C) Read single-digit numbers until finding the first 0 or 1. Count the number of digits needed to get the first 0 or 1.
What is a probability?A probability is given by the number of desired outcomes divided by the number of total outcomes.
In this problem, we want to count the number of spins it takes to reach values of 0 or 1, when there are 10 possible outcomes, hence option C is correct.
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The residents of Watson Avenue are decorating their houses for the upcoming holidays. They
have decided to all string lights around the roofs of their houses. How many feet of lighting
does Sarina need if she wants to string lights along roof?
4 feet
10 feet
6 feet
6 feet
6 feet
6 feet
Plz explain how you solve this.
Answer:
38
Step-by-step explanation:
It is 4,10,6,6,6,6 feet so add it up and it is 38
Help plzzzz! I rlly need help asap
Answer:
x=0
Step-by-step explanation:
2x-9=0
2x=9
x=9/2
4x+10=0
4x=-10
x=-5/2
2(9/2)-9 =0
4(-5/2)+10=10
Sketch each angle in standard position.
15°
The angle of 15° in standard position can be sketched as a small angle formed by rotating a ray counterclockwise from the positive x-axis.
In standard position, an angle is formed by rotating a ray counterclockwise from the positive x-axis. The initial side of the angle is the positive x-axis, and the terminal side is the ray after rotation. To sketch the angle of 15°, start with the positive x-axis as the initial side. Then, rotate the ray counterclockwise by 15°. The terminal side of the angle will be the position of the ray after the rotation. The angle will be a small angle that opens up to the left of the initial side.
The sketch of the angle will resemble a small "tick" mark or an acute angle, pointing in the counterclockwise direction. The size of the angle will be 15°, which is relatively small, closer to the size of a right angle (90°). By following this process, you can accurately sketch the angle of 15° in standard position.
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Race day has finally arrived, and the event is about to begin. Each racer must complete one lap on the circular track, which has a radius of 15 meters. You find yourself racing against Ali Al Jouda! He holds the record for the KSAA U14 100m race. You are worried but motivated! According to his record, he runs at an average speed of 8.4 m/s. Your average speed is 7 m/s. How far will you have run by the time Ali crosses the finish line?
Answer:
78.54 meters
Step-by-step explanation:
circular path
radius = 15 meters
First we have to calculate the circumference of the circular path = 2\(\pi r\)
= 2 * \(\pi * 15\)
= 94.285 meters ( total distance to be covered )
For Ali running at a speed of 8.4 meters/ seconds
It will take him : ( 94.285 / 8.4 ) seconds
= 11.22 seconds
You running at a speed of 7 meters/seconds
hence at 11.22 seconds when Ali must have crossed the finish line you must have covered ;
(11.22 * 7 ) meters
= 78.54 meters
2x-y=4
X and y intercept?
Answer:
x=2 y=-4
Step-by-step explanation:
2x-y=4 solve for x
2x-0=4
2x=4+0
2x=4 . divide both sides by 2
x=2
2x-y=4 . solve for y
0-y=4
-y=4 . divide both sides by -1
y=-4
find the net change in the value of the function between the given inputs. f(x) = 6x − 5; from 1 to 6
The net change in the value of the function between x = 1 and x = 6 is 30.
To find the net change in the value of the function between the inputs of 1 and 6, we need to find the difference between the output values of the function at x = 1 and x = 6, and then take the absolute value of that difference.
First, we can find the output value of the function at x = 1:
f(1) = 6(1) - 5 = 1
Next, we can find the output value of the function at x = 6:
f(6) = 6(6) - 5 = 31
The net change in the value of the function between x = 1 and x = 6 is the absolute value of the difference between these two output values:
|f(6) - f(1)| = |31 - 1| = 30
Therefore, the net change in the value of the function between x = 1 and x = 6 is 30.
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Help plsssssssss i don't know this!!!!!!!!!!!!!!!!
Answer: a
Step-by-step explanation: I did the test
Answer:
The total cost is $6.25
Step-by-step explanation:
3/4 of 1 kilo of rect
4/5 of 1 kilo of square
3/5 of 1 kilo of flower
rect = 3 per kilo
square = 3 per kilo
flower = 3 per kilo
First rectangle beads:
3x = y where x is number of kilos and y is full cost
3(3/4) = y
9/4 = y = 2 1/4 = $2.25
Second square beads:
3x = y where x is number of kilos and y is full cost
3(4/5) = y
12/5 = y = 2 2/5 = $2.20
Third flower beads:
3(x) = y where x is number of kilos and y is full cost
3(3/5) = y
9/5 = y = 1 4/5 = $1.80
Add costs together
1.80 + 2.20 + 2.25 = 6.25
The total cost is $6.25
On a coordinate plane, point C has coordinates of (-8, -15) and point D has coordinates of (9, -3). What are the coordinates of the point at lies of the distance from point C to D?
The coordinates of the point that lies between the points C and D is represented by E(x, y) = (- 8 + 17 · k, - 15 + 12 · k), for 0 < k < 1.
What are the coordinates of a point within a line segment?
In this question we know that the locations of the ends of the line segment CD are known and must determine the location of a point within the line segment, between the points C and D. The coordinates of the points can be found by using the line segment formula:
E(x, y) = C(x, y) + k · [D(x, y) - C(x, y)], where 0 < k < 1.
If we know that C(x, y) = (- 8, - 15) and D(x, y) = (9, - 3), then the location of the point within the line segment is:
E(x, y) = (- 8, - 15) + k · [(9, - 3) - (- 8, - 15)]
E(x, y) = (- 8, - 15) + k · (17, 12)
E(x, y) = (- 8 + 17 · k, - 15 + 12 · k), for 0 < k < 1.
The coordinates of the point that lies between the points C and D is represented by E(x, y) = (- 8 + 17 · k, - 15 + 12 · k), for 0 < k < 1.
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(5x^3)^2 simplified getting like 2 different answers on my own
Answer:
25\(x^{6}\)
Step-by-step explanation:
Given
(5x³ )²
= 5x³ × 5x³
= 5 × 5 × x³ × x³
= 25\(x^{6}\)
Answer:
5^2x^6
Step-by-step explanation:
I put it into a algebra calculator and this is what I got so I hope it helps:))
Amira is solving the equation x2 - 6x - 1. Which value must be added to both sides of the equation to make the left side a perfect-square trinomial?
Maggie just read that her computer, which costs $1,500 new, loses 20% of its value every
year. If this estimate is accurate, how much will the computer be worth in 5 years?
If necessary, round your answer to the nearest cent.
Answer:
491.52
Step-by-step explanation:
1500×.80×.80×.80×.80×.80=491.52
Simplify the first trigonometric expression by writing the simplified form in terms of the second expression.
1. 1/1-cos(x) - cos(x)/1+cos(x) ; csc(x)
2. 1/sin(x) cos(x) - cot(x) ; cot(x)
3. cos(x)/1+sin(x) + tan(x) ; cos(x)
4. tan(x) +cot(x)/sec(x) ; sin(x)
The simplified forms of the given trigonometric expressions in terms of the second expression are as follows:The first expression can be simplified to csc(x) (cosec(x)), which is equal to 1/sin(x)
To simplify the first expression, we can rewrite it as (1 - cos(x))/(1 - cos^2(x)) - cos(x)/(1 + cos(x)). Using the identity sin^2(x) + cos^2(x) = 1, we can simplify the expression to (1 - cos(x))/(sin^2(x)) - cos(x)/(1 + cos(x)). Further simplifying, we get (1 - cos(x))/(sin^2(x)) - cos(x)(sin^2(x))/(sin^2(x)(1 + cos(x))). Combining the terms, we have (1 - cos(x) - cos(x)sin^2(x))/(sin^2(x)(1 + cos(x))). Using the identity sin^2(x) = 1 - cos^2(x), we can simplify the expression to (1 - cos(x) - cos(x)(1 - cos^2(x)))/(sin^2(x)(1 + cos(x))). Finally, simplifying further, we get csc(x).
The second expression is already simplified and can be written as cot(x).
The third expression is cos(x)/1 + sin(x), which can be simplified to cos(x).
The fourth expression is (tan(x) + cot(x))/sec(x). Using the identities sec(x) = 1/cos(x), tan(x) = sin(x)/cos(x), and cot(x) = cos(x)/sin(x), we can rewrite the expression as (sin(x)/cos(x) + cos(x)/sin(x))/(1/cos(x)). Simplifying further, we get (sin(x)sin(x) + cos(x)cos(x))/(cos(x)). Using the identity sin^2(x) + cos^2(x) = 1, we have (1)/(cos(x)), which is equal to sin(x)
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Rewrite the sum of 75+18 as a product of a number and another sum
Answer:
(2)(9) + 75 = 75+18
Step-by-step explanation:
(2)(9) + 75 = 75+18
The expression written as a product of a number and another sum is 3(25 + 8)
Given the expression 75 + 18, we are to write as a product of a number and another sum.
First we need to find the GCF of 75 and 18
75 = 3 * 25
18 = 3 * 6
Since 3 is common to both D+GCF, we can factor it out from the expression to have:
75 + 18 = 3(25 + 8)
Hence the expression written as a product of a number and another sum is 3(25 + 8)
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7x - 3 = 39 sloving linear equations
Answer:
x = 6
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtract Property of EqualityAlgebra I
Terms/CoefficientsStep-by-step explanation:
Step 1: Define
7x - 3 = 39
Step 2: Solve for x
[Addition Property of Equality] Add 3 on both sides: 7x = 42[Division Property of Equality] Divide 7 on both sides: x = 6Step 3: Check
Plug in x into the original equation to verify it's a solution.
Substitute in x: 7(6) - 3 = 39Multiply: 42 - 3 = 39Subtract: 39 = 39Here we see that 39 does indeed equal 39.
∴ x = 6 is the solution to the equation.
HURRYYY!!!
Substitute (-3 and (-5 to determine if the two expressions are equivalent.
4(t+3)
4t+ 12
Which statements are true? Check all that apply.
O The value of both expressions when -5 is 32.
O The two expressions are not equivalent.
OThe value of both expressions when (-3 is 15.
O The value of both expressions when (5 is 23.
O The two expressions are equivalent.
O The value of both expressions when (3 is 24
Find the smallest pair of 4-digit numbers such that the difference between them is 303 and their HCF is 101. Show your steps.
Please give answer immediately
Based on the information provided, the two numbers whose HCF is 101 are 1010 and 1313.
What is the HCF?The HCF is the highest common factor or in other words, the highest number by which two numbers can be divided. Let's start by listing the four digits numbers that can be the HCF related to 101.
101 x 10 = 1010
101 x 11 = 1111
101 x 12 = 1212
101 x 13 = 1313
Now, from these numbers, there are two numbers whose difference is 303.
1313 - 1010 = 303
Based on this, the two numbers are 1010 and 1313
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can someone pls help me solve this
Which of the following is a solution of the inequality 2x+6y< 10? *
Answer: Which of the following ordered pairs is a solution of the inequality 2x + 6y ≤ 10?a. (3, 1) b. (2, 2) c. (1, 2) d. (1, 0)Answer:The correct answer among the choices is letter d. From the following choices of ordered pair, (1, 0) is the set solution of the inequality 2x + 6y ≤ 10. Substituting the given pair order make the inequality a true statement. To counter check answer, substituting the pair order and solving the linear inequality will result a value to support the correct answer.Step-by-step explanation:a. ( 3,1 ) (x ,y)Substitution2x + 6y ≤ 102(3) + 6(1) ≤ 106 + 6 ≤ 1012 ≤ 10 ( The inequality is False)This is not the correct answer since value to solve for x and y should result to an equal or lesser value than 10.b. (2, 2) (x ,y)Substitution2x + 6y ≤ 102(2) + 6(2) ≤ 104 + 12 ≤ 1016 ≤ 10 ( The inequality is False)This is not the correct answer since value to solve for x and y should result to an equal or lesser value than 10.c. (1, 2) (x ,y)Substitution2x + 6y ≤ 102(1) + 6(2) ≤ 102 + 12 ≤ 1014 ≤ 10 ( The inequality is False)This is not the correct answer since value to solve for x and y should result to an equal or lesser value than 10.d. (1, 0) (x ,y)Substitution2x + 6y ≤ 102(1) + 6(0) ≤ 102 + 0 ≤ 102 ≤ 10 ( The inequality is True)The statement states that 2 is lesser than or equal to 10.
Step-by-step explanation:
2а +3Ь — 5
b = a – 5
Answer:
a= -2b
Step-by-step explanation:
math.
Actually the answer is 7560.Because 3 1/2 X 2x4 X 4, 4 1/2 X x5 X 1=7560
Answer:
k
Step-by-step explanation:
?
10
Find the arc length of the semicircle.
Either enter an exact answer in terms of π or use 3.14 for π and enter your answer as a decimal.
units
Answer: \(5\pi\)
Step-by-step explanation:
The circumference is \(10\pi\).
Half of this, which is the arc length of the semicircle is \(5\pi\).
Please help! it's simple It's Yes Or No:)
Answer:
Yes.
Step-by-step explanation:
The intersection of the two graphs represents the area of all solutions for both inequalities. In this case, (1, -2) is in that area, thus we know that it is a solution to both inequalities.
Answer:
Yes
Step-by-step explanation:
Please walk my through your work, I have no idea how to solve
this. Please solve all questions
A graphing calculator is recommended. A function is given. g(x)=x^{4}-3 x^{3}-19 x^{2} (a) Find all the local maximum and minimum values of the function and the value of x at which each oc
The local maximum value of the function g(x) = x^4 - 3x^3 - 19x^2 occurs at x = -3/4, and its value is 49/16. The local minimum value of the function occurs at x = 2, and its value is -60.
To find the local maximum and minimum values of the function g(x) = x^4 - 3x^3 - 19x^2, we need to first take the derivative of the function and set it equal to zero to find the critical points. The critical points will correspond to the potential locations of local maximum or minimum values.
Step 1: Find the derivative of g(x):
g'(x) = 4x^3 - 9x^2 - 38x
Step 2: Set the derivative equal to zero and solve for x:
4x^3 - 9x^2 - 38x = 0
Step 3: Factor the equation or use numerical methods to solve for x:
x(x + 2)(2x - 19) = 0
From this equation, we can find the critical points at x = 0, x = -2, and x = 19/2.
Step 4: Determine the nature of each critical point:
To determine whether each critical point is a local maximum or minimum, we can use the second derivative test. Taking the derivative of g'(x) gives us the second derivative:
g''(x) = 12x^2 - 18x - 38
Plugging in the x-values of the critical points, we find:
g''(0) = -38 (negative, indicating a local maximum)
g''(-2) = 70 (positive, indicating a local minimum)
g''(19/2) = 1103/4 (positive, indicating a local minimum)
Therefore, we have identified two local extrema: a local maximum at x = -3/4 and a local minimum at x = 2. The corresponding values of g(x) at these points are 49/16 and -60, respectively.
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