Evaluate the expression.
2−[(2+10(−1)÷2)+1]
What is the value of the expression?
Enter your answer in the box.
Answers
Answer:4
Step-by-step explanation: the answer is 4 because you have to 20 2-2+10 and that is ten. then minus one is 9 then 9/2=3 and then 3+1 equals 4
Related Questions
can someone help me i will mark
Answers
Answer:
8+3/4w
Step-by-step explanation:
Match the property of equality with the corresponding definition given that a = b.
multiplication property of equality
a+c=b+c
subtraction property of equality
a(c) = b(c)
addition property of equality
a-c=b-c
division property of equality
ale = b c
Answers
Answer:
See Explanation
Step-by-step explanation:
Given
\(a = b\)
Required
Match proper type of equality
Each of the equality properties can easily be identified with their names; For multiplication property of equality, same term must be multiplied on both sides;
For addition, same term must be added on both sides;
Same thing implies for division and subtraction
Multiplication:
\(a(c) = b(c)\)
Subtraction
\(a - c = b - c\)
Addition
\(a + c = b + c\)
Division
\(a/c = b/c\)
b. Is there a pattern in the table? Explain.
Answers
Answer:
no photo
Step-by-step explanation:
we need a photo to decide if answer is correct or not
A baseball bat strikes a ball with an average force of 2.0 x 104 Newtons. if the bat stays in contact with the ball for a distance of 5.0 x 10-3 meter, what kinetic energy will the ball acquire from the bat?1.0 x 102 J2.0 x 102 J2.5 x 101 J4.0 x 102 J
Answers
A baseball bat strikes a ball with an average force of 2.0 x 104 Newtons. if the bat stays in contact with the ball for a distance of 5.0 x 10-3 meter , then the kinetic energy will be 2× 10^2 J
kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.
In classical mechanics, the kinetic energy of a non-rotating object of mass m traveling at a speed v is 1/2 mv²
Favg= -1/2 MV2
Favg = -1 2 ( 5.0 x 10-3)^2
Favg = - 1/2 ×25 × 10 ^-6
Favg = 2× 10^2 J
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The new graph is the inverse of the time vs height graph, but I’d not a function. How would you restrict the domain on the original function to make it invertible?
Answers
Using inverse function concepts, it is found that the domains that make the function invertible are: \(t \in [0, 2.5]\) of \(t \in [2.5, 5]\).
-----------------------------------
A function is invertible if each output is related to only one value of the input.-----------------------------------
In the graph given in this question, other than the maximum height at \(t = 2.5\) seconds, all outputs are related to two input values.To be invertible, the domain has to be divided at the half-way point, either between 0 and 2.5 seconds, or between 2.5 seconds and 5 seconds. This way, each output will be related to only one input.Thus, the domains that make the function invertible are: \(t \in [0, 2.5]\) of \(t \in [2.5, 5]\).
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Find the solutions to the equation below.
Check all that apply.
6x2 + 5x - 4 = 0
A. X=
-IN
B. X=
C. x =
1 D. x = -2
E. x=-5
F. X= 4
Answers
Answer:
X=1/2. X=4/3
Step-by-step explanation:
6x2+5X-4=0
6X2+8X-3X-4=0
2x(3x+4) - 1(3x+4)=0
2x-1) (3X-4)
X=1/2. X=4/3
The Solution of Equation is x = -4/3 or x= 2.
What is Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
We have the Equation:
6x² + 5x - 4 = 0
Solving the Quadratic equation
6x² + 5x - 4 = 0
6x² -3x + 8x - 4 = 0
3x( x- 2) +4 (x-2)= 0
(3x + 4) (x-2) = 0
3x +4 = 0 or x-2 = 0
x = -4/3 or x= 2
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Which of the following inequalities is represented on the graph?
Answers
Answer:
a number line or something like this
. A research study about test anxiety will measure the change in heartrate of the test-taker. The researcher randomly assigns participants into one of two groups, either the Test group or the No-test group (where the first group takes a timed test and the second group reads for the same amount of time). What is the operational definition of the independent variable
Answers
Answer:
Timed test.
Step-by-step explanation:
An operational definition gives exactly what the independent variable means and its mode of measurement. The Independent variable is the variable in a research or experimental study which causes a change in the the measured variable. Hence, the independent variable is the predictor variable. In the study above, the independent variable is the timed test which is used to observe changes in the heart rate of the test taker (test anxiety). The change innheartrate of the test taker is the dependent variable.
can someone help me with making the x the subject of the formula
100 point up for grabs pls helpppp
y =xa+ b
y =xa− b
y =x + 2 divided by two
Answers
Answer:
\(\textsf{1)} \quad x=\dfrac{y-b}{a}\)
\(\textsf{2)} \quad x=\dfrac{y+b}{a}\)
\(\textsf{3)} \quad x=2y-2\)
Step-by-step explanation:
Question 1\(\boxed{\begin{aligned}&\textsf{Given}: \quad &y & =xa+b\\\\&\textsf{Subtract $b$ from both sides}: \quad & y-b&=xa+b-b \\\\&\textsf{Simplify}: \quad &y-b&=xa \\\\&\textsf{Divide both sides by $a$}: \quad &\dfrac{y-b}{a} &=\dfrac{xa}{a} \\\\&\textsf{Simplify}: \quad &\dfrac{y-b}{a} &=x\\\\&\textsf{Switch sides}: \quad & x&=\dfrac{y-b}{a}\end{aligned}}\)
Question 2\(\boxed{\begin{aligned}&\textsf{Given}: \quad &y & =xa-b\\\\&\textsf{Add $b$ to both sides}: \quad & y+b&=xa-b+b \\\\&\textsf{Simplify}: \quad &y+b&=xa \\\\&\textsf{Divide both sides by $a$}: \quad &\dfrac{y+b}{a} &=\dfrac{xa}{a} \\\\&\textsf{Simplify}: \quad &\dfrac{y+b}{a} &=x\\\\&\textsf{Switch sides}: \quad & x&=\dfrac{y+b}{a}\end{aligned}}\)
Question 3\(\boxed{\begin{aligned}&\textsf{Given}: \quad & y&=\dfrac{x+2}{2} \\\\&\textsf{Multiply both sides by $2$}: \quad & 2 \cdot y&=2 \cdot \dfrac{x+2}{2} \\\\&\textsf{Simplify}: \quad & 2y&=x+2 \\\\&\textsf{Subtract $2$ from both sides}: \quad & 2y-2&=x+2-2 \\\\&\textsf{Simplify}: \quad & 2y-2&=x \\\\&\textsf{Switch sides}: \quad &x&=2y-2\end{aligned}}\)
Find the particular antiderivative of the following derivative that satisfies the given condition. C''(x)=4x2-3x ; C(0)=2000
Answers
The particular antiderivative that satisfies the given condition is: C(x) = (4/9)x^4 - (9/8)x^3 + K1x + 2000
To find the particular antiderivative (or integral) of the given derivative \(C''(x) = 4x^2 - 3x\) that satisfies the condition C(0) = 2000, we need to integrate the given function twice.
First, we integrate C''(x) to find C'(x):
\(C'(x) = ∫ (4x^2 - 3x) dx\)
To find the antiderivative of \(4x^2\), we use the power rule for integration: the power of x increases by 1 and is divided by the new power. Similarly, the antiderivative of -3x is \(-(3/2)x^2\).
\(C'(x) = ∫ (4x^2 - 3x) dx = (4/3)x^3 - (3/2)x^2 + K1\)
Here, K1 is the constant of integration. Next, we integrate C'(x) to find C(x):
\(C(x) = ∫ (C'(x)) dx = ∫ ((4/3)x^3 - (3/2)x^2 + K1) dx\)
To find the antiderivative of \((4/3)x^3\), we again use the power rule for integration. Similarly, the antiderivative of \(-(3/2)x^2\) is \(-(3/2)(1/3)x^3\).
The constant of integration K1 will also be integrated with respect to x, resulting in another constant of integration, K2.
\(C(x) = (1/3)(4/3)x^4 - (1/2)(3/2)x^3 + K1x + K2\)
Simplifying further, we have:
\(C(x) = (4/9)x^4 - (9/8)x^3 + K1x + K2\)
Now, we can apply the initial condition C(0) = 2000 to find the particular solution for K2:
\(C(0) = (4/9)(0)^4 - (9/8)(0)^3 + K1(0) + K2 = 2000\)
Since all the terms involving x become zero when x = 0, we have:
K2 = 2000
Therefore, the particular antiderivative that satisfies the given condition is: \(C(x) = (4/9)x^4 - (9/8)x^3 + K1x + 2000\)
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Solve for x. Show your work.
Answers
Answer:
x=6
Step-by-step explanation:
Both Angles are commentary and have a sum of 90
Therefore, set your formula up as
90 = 5x + (x + 54)
90 = 6x + 54
90 - 54 = 6x
36 = 6x
36/6 = x
6 = x
!!PLS HELP ASAP!!30 POINTS!!
Divide using synthetic division
\(x^4-3x^3-7x+1\)÷\(x+2\)
Answers
The quotient and remainder are x³ -5x² + 10x - 17 and 55.
What is Synthetic division?
When the divisor is a linear factor, synthetic division is a technique used to carry out the division operation on polynomials.
Here, (x+2) is a linear factor which indicates that synthetic division can be applied.
So, we will divide the x^4 - 3x^3 - 7x + 1 by x+2.
(refer the attached solution)
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![!!PLS HELP ASAP!!30 POINTS!!Divide using synthetic division[tex]x^4-3x^3-7x+1[/tex][tex]x+2[/tex]](https://i5t5.c14.e2-1.dev/h-images-qa/answers/attachments/8yprsebfa86csj8Wx4vXMSdg67ka61bd.jpeg)
Eric plays basketball and volleyball for a total of 95 minutes every day. he plays basketball 25 minutes more than he plays volleyball. part a: write a pair of linear equations to show the relationship between the number of minutes eric plays basketball (x) and the number of minutes he plays volleyball (y) every day. (5 points) part b: how much time does eric spend playing volleyball every day? (3 points) part c: is it possible for eric to have spent 35 minutes playing basketball every day? explain your reasoning. (2 points) (10 points)
Answers
The linear equations that can be used to show the relationship are:
x + y = 95 minutes
x - y = 25 minutes
The minutes spent playing volleyball is 60 minutes.
Eric could have spent 35 minutes playing basketball. This is because the difference between 95 and 60 minutes is 35 minutes.
What are the minutes spent playing volleyball and basketball?x + y = 95 minutes equation 1
x - 25 = y equation 2
Substitute for y in equation 1
x + x - 25 = 95
2x = 95 + 25
2x = 120
x = 60 minutes
Time spent playing basketball = 95 - 60 = 35 minutes
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Factor the following expression using imaginary numbers:
81x^2+121
Please show me the steps, thank you!
Answers
Answer: (9x + 11i) (9x - 11i)
Step-by-step explanation:
When i is squared, you are given a negative value, but by multiplying a positive by a negative, we reverse that and are left with positive 121. The 9x will be cancelled out by the 11's and squaring the 9x will give 81x^2.
It's hard to fully explain this, but if I do find something, I will update this or comment more explanation. You could try to solve using the quadratic formula.
Hope this helps.
Scientists believe that the average temperatures at various places on Earth vary from cooler to warmer over thousands of years of gradual climate change. Suppose that at one place, the highest average temperature is 80º and the lowest is 60º. Also suppose that the time it takes to go from the high to low average is 20,000 years, and in the year 2000 the average temperature is at a high point of 80º. What will be the temperature at this location in the year 58,246?
Answers
Samuel made 31 out of 40 field goals during football practice. What percent of the field goals did Samuel make?
Answers
The percent of the field goals did Samuel make will be 77.5%.
How to calculate the percentage?A percentage is a value or ratio that may be stated as a fraction of 100. If we need to calculate a percentage of a number, we should divide it's entirety and then multiply it by 100. The percentage therefore refers to a component per hundred. Per 100 is what the word percent means. It is represented by %.
Samuel made 31 out of 40 field goals during football practice. The percent of the field goals did Samuel make will be:
= 31 / 40 × 100
= 77.5%
The percentage is 77.5%.
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You paid $16.50 for a prescription plus $1.32 in sales tax. What is the sales tax rate?
Answers
Answer:
16.50+1.32 u happy its so easy
1.32 tax divided by cost of prescription 16.50
Equals .08 or 8%
Suppose you borrowed $2,000 at a rate of 9.0% and must repay it in 4 equal installments at the end of each of the next 4 years. How large would your payments be?
Select the correct answer.
a. $614.04
b. $620.64
c. $610.74
d. $623.94
e. $617.34
Answers
An annual payment is found approximately $617.34. The correct option is e.. $617.34.
To find the size of your payments, you can use the formula for calculating the equal installments on a loan.
First, calculate the annual payment by dividing the borrowed amount ($2,000) by the present value factor of an annuity due with 4 periods at a 9% interest rate.
Using a financial calculator or spreadsheet, the present value factor of an annuity due with 4 periods at 9% interest rate is 3.2403.
Dividing $2,000 by 3.2403 gives us an annual payment of approximately $617.34.
Therefore, the correct answer is e. $617.34.
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Find x for this problem.
Answers
Answer:
\(\huge\boxed{\sf x = 3}\)
Step-by-step explanation:
Statement:According to intersecting chord theorem, if two chords intersect each other, the product of lengths of each chord will be equal.
Such that,
\(a \times b = c \times d\)
So, here:\(x \times 2 = 1 \times 6\\\\2x = 6\\\\Divide \ both \ sides \ by \ 2\\\\x = 6/2\\\\x = 3\\\\\rule[225]{225}{2}\)
Express 1/10 cm as a fraction of 3 metres
Answers
Answer:
1/3000
Step-by-step explanation:
3 meters to centimeters:
3 × 100 = 300
= 1/10 ÷ 300
= 1/10/300
= 1/(10×300)
= 1/3000
The “line of best fit” for a scatterplot is the line that __________.
A.
includes at least 3 data points in the data set
B.
is the smallest distance away from every point in the data set
C.
goes through the maximum and minimum data points of the data set with respect to the independent variable
D.
goes through the maximum and minimum data points of the data set with respect to the dependent variable
Answers
Answer:
I think it's B. In Algebra 2, I was taught that a scatter plot needs to be as close, if not exactly on each point...
Y=1/3(x-6)^2 standard form
Answers
Answer:
Step-by-step explanation:
Answer: Y = 1/3x^2 - 4x + 12
Step-by-step explanation:
Hope this helps, sorry I don't have an explanation...
can you help me ASAP
Simplify
3×4²+8-(6÷2)
Answers
Answer:
USE PEMDAS
Step-by-step explanation:
Answer:
53
Step-by-step explanation:
find the derivatives of cos 2x
Answers
Hope the above helps you......
The value of an irrigational number expression is estimated to be between 18 and 19. Which could be the expression
Answers
please answer I keep wasting my points and getting ignored
Answers
Answer:
205 square ft
Step-by-step explanation:
1. Since his room is 12ft by 15.75ft, we can multiply to find the square ft needed to cover his room.
2. Since his closet is 2ft by 8ft, we can multiply to find the square ft needed to cover his closet.
3. Then, we add them to find how much carpeting is needed total.
4. (12*15.75)+(2*8)=189+16=205
Which expression is equivalent to (st)(6)?
s(t(6))
s(x) × t(6)
s(6) × t(6)
6 × s(x) × t(x)
Answers
Answer: The expression (st)(6) means to substitute the value of 6 into the function (st) which is the composition of two functions s and t. The order of applying the functions is crucial, so the first function s will be applied to the result of the second function t after being applied to the 6. So the correct equivalent of (st)(6) is s(t(6))
Step-by-step explanation:
If f(x) = |x| + 9 and g(x) -6, which best describes the value of (f+g)(x)
I WILL GIVE BRAINIEST TO FIRST ANSWER
Answers
the data set represents the shoe sizes of 19 students in a fifth grade physical education class 4, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 7.5, 7.5, 8, 8, 8.5, 8.5, 9 a. create a box plot to represent the distribution of the data
Answers
Answer:
The minimum value = 4
The maximum value = 9
The first quartile, Q₁ = 6
The second quartile, (median) Q₂ = 7
The third quartile, Q₃ = 8
The box plot showing the above data is attached
Step-by-step explanation:
The given data set is 4, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 7.5, 7.5, 8, 8, 8.5, 8.5, 9
From the data, we have;
The minimum value = 4
The maximum value = 9
The first quartile, Q₁ = (n + 1)/4th term = (19 + 1)/4 = the 5th term = 6
The second quartile, (median) Q₂ = (n + 1)/2 term = (19 + 1)/2 = the 10th term = 7
The third quartile, Q₃ = 3×(n + 1)/4th term = 3×(19 + 1)/4 = the 15th term = 8
Please find the attached box plot as plotted on Excel.
2x - 5y + 3z = 27
4x + 3y - 7z=-37
x - 2y + 5z = 30
I need help solving this with cramers rule
Answers
Step-by-step explanation: answer {x,y,z} = {1,-2,5}
/ Solve equation [3] for the variable x
[3] x = 2y - 5z + 30
// Plug this in for variable x in equation [1]
[1] 2•(2y-5z+30) - 5y + 3z = 27
[1] - y - 7z = -33
// Plug this in for variable x in equation [2]
[2] 4•(2y-5z+30) + 3y - 7z = -37
[2] 11y - 27z = -157
// Solve equation [1] for the variable y
[1] y = -7z + 33
// Plug this in for variable y in equation [2]
[2] 11•(-7z+33) - 27z = -157
[2] - 104z = -520
// Solve equation [2] for the variable z
[2] 104z = 520
[2] z = 5
// By now we know this much :
x = 2y-5z+30
y = -7z+33
z = 5
// Use the z value to solve for y
y = -7(5)+33 = -2
// Use the y and z values to solve for x
x = 2(-2)-5(5)+30 = 1