(x-5)^2 - (x+1)^2+ (x+3)*(x-3)
Answers
Step-by-step explanation:
here's the answer to your question
Related Questions
B=x-3/x-1
- rút gọn P=A.B
Answers
A
Steliên hợp p-by-step explanaliên hợp ion:
Find P(blue and even).
A. 3/5
B. 1/10
c. 7/10
Answers
Answer: A. 3/5
Step-by-step explanation:
Assuming that they are colorful blocks,
There are in total 10 blocksThere are in total 2 blue blocksThere are in total 5 even blocksBlue blocks: 1, 2
Even blocks: 2, 4, 6, 8, 10
The net total of blue and even blocks:
2 + 5 = 7 blocksHowever, as we can see from above, the number [2] is repeated in both cases, thus we shall subtract one of them from the total number.
7 - 1 = 6 blocksWe analyzed at the beginning where there are 10 blocks in total. Then, utilizing the probability formula below:
6/10 = 3/5Hope this helps!! :)
Please let me know if you have any questions
Find the value of x. Round to the nearest tenth.
Answers
Answer:
[tex]cos\Theta =\frac{adj}{hyp}[/tex]
[tex]cos 32=\frac{12}{x}[/tex]
[tex]x=12/cos32[/tex]
[tex]=14.2[/tex]
[tex]OAmalOHopeO[/tex]
Answer:
[tex]\huge\boxed{x=14.2}[/tex]
Step-by-step explanation:
Use a cosine:
[tex]cosine=\dfrac{adjacent}{hypotenuse}[/tex]
We have:
[tex]adjacent=12\\hupotenuse=x\\measure\ of\ angle=32^o[/tex]
Look at the picture or use the calculator.
[tex]\cos32^o=0.8480[/tex]
Substitute:
[tex]0.848=\dfrac{12}{x}\\\\\dfrac{0.848}{1}=\dfrac{12}{x}[/tex]
cross multiple
[tex]0.848x=12[/tex]
divide both sides by 0.848
[tex]x=\dfrac{12}{0.848}\\\\x=14.2[/tex]
Which set of ordered pairs could be generated by an exponential function?
(negative 1, negative one-half), (0, 0), (1, one-half), (2, 1)
(–1, –1), (0, 0), (1, 1), (2, 8)
(negative 1, one-half), (0, 1), (1, 2), (2, 4)
(–1, 1), (0, 0), (1, 1), (2, 4)
Answers
Answer:
(–1, –1), (0, 0), (1, 1), (2, 8) (y = x^2)
(–1, 1), (0, 0), (1, 1), (2, 4) (y = x^3)
Answer:
C
Step-by-step explanation:
Use trigonometric identities to solve each equation within the given domain.
1 – cos(x) = 2 – 2 sin2(x) from (–π, π) PLEASE SHOW WORK!!!
Answers
Recall that
cos²(x) + sin²(x) = 1
Then in the equation
1 - cos(x) = 2 - 2 sin²(x)
we can rewrite as
1 - cos(x) = 2 (1 - sin²(x))
1 - cos(x) = 2 cos²(x)
2 cos²(x) + cos(x) - 1 = 0
Factorize the left side as
(2 cos(x) - 1) (cos(x) + 1) = 0
so that
2 cos(x) - 1 = 0 or cos(x) + 1 = 0
cos(x) = 1/2 or cos(x) = -1
On the interval (-π, π) (note that this interval is open, so we don't allow x = π), we have
• cos(x) = 1/2 for x = π/3 and x = -π/3
• cos(x) = -1 for x = π
Bob placed a 17- foot ramp against the side of a house so the ramp rested on a ledge that is 8 feet above the ground. How far was the base of the ramp from the house?
Answers
Hope this helps! Please make me the brainliest, it’s not necessary but appreciated, I put a lot of effort and research into my answers. Have a good day, stay safe and stay healthy.
26)
A pile of bricks has 93 bricks in the first row, 89 bricks in the second row, 85 bricks in the third row, and so on.
How many bricks are there in the 12th row?
OA) 49 bricks
OB) 69 bricks
Answers
Answer:
49 bricks
Step-by-step explanation:
because it's getting smaller my 4
Explanation: it’s getting smaller by 4, they already gave us the first three, so now we multiply 4 by 9 and get 36 ( I multiplied 4 by 9 since that’s how many numbers were left to get to 12 from 3) and subtracted 36 by 85 then got 49. Hope this helps ^_^
Select the correct answer from each drop-down menu.
Drew is filing his tax return as single taxpayer. His taxable income is $39,000. Use the tax table provided to compute Drew's tax due and
effective tax rate.
Single Taxpayers: Income Brackets
Tax Income
Tax Owed
Rate Bracket
1096 O to 9,525 10% of taxable income
9,526 to $952.50 plus 12% of
1296
38,700 the excess over $9,525
$4,453.50 plus 22% of
2296
38,701 to
the excess over
82.500
$38,700
$14,089.50 plus 2496
82.501 to
2496
of the excess over
157.500
$82.500
$32,089.50 plus 3296
157.501 to
3296
of the excess over
200,000
$157.500
$45,689.50 plus 3596
200,001 to
3596
of the excess over
500,000
$200,000
$150,689.50 plus 3796
3796 > 500,000 of the excess over
55
Answers
The given tax rates are as follows:
Single Taxpayers: Income Brackets
Tax Income Rate Bracket Tax Owed
O to 9,525 10% 10% of taxable income
9,526 to38,700 12% $952.50 plus 12% of 38,700 the excess over
$38,701 to 82,500 22 % $4,453.50 plus 22% of 38,701 the excess over
82,501 to 157,500 24% $14,089.50 plus 24% of the excess over
157,500
157,501 to 200,000 32% $ 32089.50 plus 32% of the excess over
200,001 to 500,000 35% 45,689.50 plus 35% of the excess over
500,000 > 37% $150,689.50 plus 37% of 500,000 of the
excess over
The taxable income lies in the tax rate range of $38,701 to 82,500.
Therefore the tax would be
$4,453.50 + 22% of (39,000-38,701=299)
$4,453.50 + 22% of 299
$4,453.50 + 65.78
= $ 4519.28
The taxable income lies in the tax rate range of $38,701 to 82,500.
Due and effective tax rate is $4,453.50 plus 22% of 38,701 the excess over
The calculated tax is $ 4519.28
https://brainly.com/question/1105919
https://brainly.com/question/1160723
Answer:
$4,519.50 and 22%
Step-by-step explanation:
i got it right
HELP ASAPPPP NOWWW PLEASEEE
Answers
x=0 since 1 to the power of zero equals 1.
hope im not too late
Answer:
1. x=1
2. x=0
Download gauthmath and it will help
The measure of BAC is 240. What is the ratio of the measure of the major arc to the measure of the minor arc?
Answers
Explanation:
The major arc is given to be 240 so the remaining arc of the circle must be 360-240 = 120
240 must be the major arc since it is larger than 120, and the ratio is major:minor
- 240:120 simplifies to 2:1
Hope it helps :)
Q 14. Two friends Tina and Reeta simplified two different expressions during the revision
hour and explained toeach other their simplifications,
V2
Tina explains simplification of Torta by rationalising the denominator and Reeta
explains simplifications of (72 + V3) (12 - 13) by using identity,
i)
Vz
By rationalising the denominator of
Tina got
VSV
vz
a)
c) V5 – 13
b) V7(13-va)
d)
Vic+V5)
2
ii)
Reeta apply
a) (a+b)
identity to simplify(V2 + 13) (12 – 73).
b) (a-b)?
c) (x+a) (x+b) d) (a+b)(a-b)
iii)
(12 + V3) (72 - 73) =
a) 5 b) (74 + 6
c) 1
d) -1
iv)
All the rational and irrational numbers make up the collection of
numbers.
a) Whole numbers
b) Integers
b) c) Real Numbers
d) Irrational Numbers
Answers
the system of equations y =-3x+2 and y =1/2 x -6 is shown on the graph below. What is a reasonable estimate for the solution>
Answers
The reasonable estimate for the solution is (2.29, -4.87)
The reasonable estimate for the solution is the point where the two lines intersect each other.
To get the point where they intersect, we will simply equate the system of equations given as shown:
[tex]-3x+2=\frac{1}{2}x-6\\Collect \ the \ like \ terms\\-3x-\frac{1}{2}x=-6-2\\\frac{-7x}{2}=-8\\-7x=-16\\x=\frac{16}{7} \\x=2.29[/tex]
Substitute x = 2.29 into any of the equation
Using the equation y = -3x+2
y = -3(2.29)+2
y = -6.87+2
y =-4.87
This shows that the reasonable estimate for the solution is (2.29, -4.87)
Further explanation about the system of equations can be found here https://brainly.com/question/19713330
The point of intersection of the linear equations is approximately [tex](x,y) = (2.286, -4.857)[/tex].
The most quickest approach that offers a reasonable solution consist in representing both linear functions graphically by means of a graphing tool (i.e. Desmos). As there is a system of two equation and two variables, the system can be represented by 2D-graphing tool.
The solution of this system is represented by the point, in which both lines intercepts each other. Let be the following two linear functions:
[tex]y = 3\cdot x + 2[/tex] (1)
[tex]y = \frac{1}{2}\cdot x - 6[/tex] (2)
The result from graphic tool is presented below and the point of intersection is approximately [tex](x,y) = (2.286, -4.857)[/tex].
Please help with the question
Answers
Now graph the points C(2, 8) and D(8, 7). (Try entering the coordinates through the input window.) Measure the lengths of and . Do the points C and D lie on the circle? How do you know? Take a screenshot showing the points and their distances from the center, and paste it below.
Answers
Answer:
this was from plato
Step-by-step explanation:
Answer:
Any point on the circle must be at a distance from the center equal to the length of the circle’s radius. In this example, the radius is 3.61 units, AC = 4.24, and AD = 3.61. Point D, which lies on the circle, has the same distance from the center as the length of the radius. Point C, which lies outside the circle, is at a different distance from the center than the length of the radius.
If ℓ ∥ k and k ∥ m, then _____
Answers
Answer:
E ||M
Step-by-step explanation:
This is based upon the postulate if A=B and B=C then A=C. picture it like this, you have 3 lines. The top and middle are parallel. The bottom and middle are parallel. so obviously the top and bottom are too
Answer:
l || m
Step-by-step explanation:
please answer this question and attach a photo of your solution
Answers
Answer:
Step-by-step explanation:
[tex]a^{m}*a^{n}=a^{m+n}[/tex] .
Use distributive property.
[tex]\frac{1}{2}ab*(3a^{2}-5b^{2}a+10a^{2}b)=\frac{1}{2}ab*3a^{2}-\frac{1}{2}ab*5b^{2}a+\frac{1}{2}ab*10a^{2}b\\\\\\[/tex]
[tex]=\frac{3}{2}a^{1+2}b -\frac{5}{2}a^{1+1}*b^{1+2}+5*a^{1+2}*b^{1+1}\\\\\\=\frac{3}{2}a^{3}b-\frac{5}{2}a^{2}b^{3}+5a^{3}b^{2}[/tex]
please answer all the questions above.
Answers
Answer:
hope it was helpful!! You are welcome to ask any question
Answer:
Step-by-step explanation:
1) 7 - ( 3+4) = 7 + [- (3+ 4)] = 7 + (-3) + (-4)
(-) is distributed to 3 and 4
A
2) C
I (-3) - 4 I
3) 5 + 3 = 8 miles
B
What value of x will make the equation true?
(Square Root of 5) (square root of 5)=x
Answers
Answer:
(2.236067978)(2.236067978)
=5 ans.
If this is incorrect forgive me
I hope this will help you
stay safe
please help me asap
(geometry)
Answers
Answer:
x is ten
Step-by-step explanation:
9 times ten is 90, then minus 40 is 50, and 3 times ten is 30, plus 20 is 50
Find the gradient of the curve y= x^2 - 5x + 6 at x=1
Answers
Answer:
Gradient or slope at x=1 is -3
Step-by-step explanation:
[tex]y=x^2-5x+6\\\frac{dy}{dx} =2x-5\\at ~x=1\\\frac{dy}{dx} =2(1)-5=-3[/tex]
Help me plsss! Thank you
Answers
Answer:
45/139 green or 20/139 yellow
Step-by-step explanation:
1. Add up total number of candles- thats your denominator
2. The total number of green or yellow candles is your numerator
3. Simplify your fractions if you have to
What is the product of the polynomials below?
(5x2 - x-3)(2x+6)
Answers
[tex]\bf \rightarrow \:(5 {x}^{2} - x - 3) \: \: (2x + 6) \\ \\ \bf \small \rightarrow \:10 {x}^{3} - 2 {x}^{2} - 6x + 30 {x}^{2} - 6x - 18 \\ \\ \bf \rightarrow \:10 {x}^{3} + 28 {x}^{2} - 12x - 18[/tex]
༆ Option D is the correct answer༆
Type the correct answer in each box. Given AB is perpendicular to CD
Answers
find the common difference in the linear sequence sequence 69,53,47,30
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Which choice is equivalent to the expression below?
-27
O A. -3,37
B. 3:45
O C. - 27
O D. -3/3
O E. 343
Answers
Answer:
B. 3i√3Step-by-step explanation:
[tex]\sqrt{-27} =[/tex][tex]\sqrt{-1*3*9} =[/tex][tex]3\sqrt{-1} \sqrt{3} =[/tex][tex]3i\sqrt{3}[/tex]Correct choice is B
Answer:
B. 3i√3
Step-by-step explanation:
[tex]\sqrt{-27} = \sqrt{-1*3*3*3}=3\sqrt{-1*3}[/tex]
we have
-1=i²
so
=[tex]3\sqrt{i²*3}[/tex]
=3i[tex]\sqrt{3}[/tex]
Option B.3i[tex]\sqrt{3}[/tex]
A simple random sample of 49 8th graders at a large suburban middle school indicated that 88% of them are involved with some type of after school activity. Find the margin of error associated with a 90% confidence interval that estimates the proportion of them that are involved in an after school activity.
Answers
Answer:
The margin of error associated with a 90% confidence interval that estimates the proportion of them that are involved in an after school activity is 0.0764.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the z-score that has a p-value of [tex]1 - \frac{\alpha}{2}[/tex].
The margin of error is:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
90% confidence level
So [tex]\alpha = 0.1[/tex], z is the value of Z that has a p-value of [tex]1 - \frac{0.1}{2} = 0.95[/tex], so [tex]Z = 1.645[/tex].
A simple random sample of 49 8th graders at a large suburban middle school indicated that 88% of them are involved with some type of after school activity.
This means that [tex]n = 49, \pi = 0.88[/tex]
Margin of error:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
[tex]M = 1.645\sqrt{\frac{0.88*0.12}{49}}[/tex]
[tex]M = 0.0764[/tex]
The margin of error associated with a 90% confidence interval that estimates the proportion of them that are involved in an after school activity is 0.0764.
help please i procrastinated
Answers
Answer:
24 + 28 + 21 + 23 = 96
step by step follow
What is the simplified form of each expression?
a. (6 + 3)2 − 4
b. 23 + (14 − 4) ÷ 2
A. a. 77
b. 13
B. a. 77
b. 9
C. a. 14
b. 13
D. a. 14
b. 9
Answers
Answer:
These kind of questions are called simply.
According to simply, there's a rule of solving which is BODMAS.
BODMAS stand for bracket of Divide, Multiple, Add, Subtraction.
(6+3)2-4> (9)2-4
> 18-4
> 16
• (6+3)2-4 = 16
2. 23+(14-4)÷2
> 23+10÷2
> 23+5
> 28
• 23+(14-4)÷2 = 28
Step-by-step explanation:
Hope it helps you
Which expression is equivalent to ((2x²) (3x) (4x)??
A.24x7
B.48x?
C.9677
D.576x12
Answers
Answer:
24x^4
Step-by-step explanation:
((2x²) (3x) (4x)
Add the exponents when multiplying
2*3*4 x^(2+1+1)
24x^4
A circle has a radius of 3. An arc in this circle has a central angle of 20°. What is the length of the arc? Either enter an exact answer in terms of or use 3.14 for 1 and enter your answer as a decimal.
Answers
Answer:
[tex]\frac{\pi }{3}[/tex]
[tex]2 * \pi * 3 * \frac{20}{360}[/tex]
120[tex]\pi[/tex]/360 = [tex]\frac{\pi }{3}[/tex]
Step-by-step explanation:
