Answer: 117°
Step-by-step explanation:
Use the Law of Cosines:
c² = a² + b² - 2ab · cos C
12² = 6² + 8² - 2(6)(8)(cos C)
144 = 36 + 64 - 96 cos C
144 = 100 - 96 cos C
44 = -96 cos C
[tex]-\dfrac{44}{96}=cosC\\\\\\cos^{-1}\bigg(-\dfrac{44}{96}\bigg)=C[/tex]
117° = C
A pyramid whose length= 12 ft,width = 7ft,and height = 10ft.
Answer:
if you mean volume its 840
Step-by-step explanation:
i just multiplied the 3 numbers
Which equivalent expression will be generated by applying the Distributive Property and combining like terms in the expression 11 + 4(x + 2y + 4)?
Answer:
27+4x+8y
or
4x+8y+27 ( I can reorder this a few different ways. I don't know what your choices are)
Step-by-step explanation:
11+4(x+2y+4)
We can apply distributive property to the 4(x+2y+4), this will give us 4x+8y+16.
Bring down the 11+ and we have 11+4x+8y+16.
The only like terms we have is 11 and 16. So reorder using commutative property and get 11+16+4x+8y.
I'm going to simplify the 11+16 part which gives us 27.
In the end we have 27+4x+8y.
Let me line up so it is all nice and neat:
11+4(x+2y+4)
11+4x+8y+16
11+16+4x+8y
27+4x+8y
simplify the square root of 6 * the square root of 8
Answer:
4√3
Step-by-step explanation:
The question is to simplify √6 × √8
Applying surds
√6 can be written as √2 ×√3
and
√8 can be written as √2 × √4
but √4=2
so;
√8 is 2√2
Write the whole question as
√2×√3×2√2
This can be written as
2√2×√2×√3
But you know √2×√2 = √4 =2
So, write as
2×2×√3 = 4√3
4√3 is the simplified form
Simplified form of expression √6 × √8 is,
⇒ 4√3
We have to given that,
An expression to simplify,
⇒ √6 × √8
Simplify as,
⇒ √6 × √8
Since, √6 = √2 × √3
√8 = √2 × √2 × √2
Hence, We can write as,
⇒ √6 × √8
⇒ √2 × √3 × √2 × √2 × √2
⇒ 4√3
Therefore, Simplified form of expression √6 × √8 is,
⇒ 4√3
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Help !!!!!!!!!!!!!!!!!!!
Shown below
Step-by-step explanation:No graph has been plotted, but the question is answerable either way and I'll be happy to help you. In this problem, we have the following inequality:
[tex]x-y-2\geq 0[/tex]
Before we focus on getting the shaded region, let's graph the equation of the line:
[tex]x-y-2=0[/tex]
So let's write this equation in slope intercept form [tex]y=mx+6[/tex]:
STEP 1: Write the original equation.
[tex]x-y-2=0[/tex]
STEP 2: Subtract -x from both sides.
[tex]x-y-2-x=0-x \\ \\ \\ Group \ like \ terms \ on \ the \ left \ side: \\ \\ (x-x) - y-2=-x \\ \\ The \ x's \ cancel \ out \ on \ the \ left: \\ \\ -y-2=-x[/tex]
STEP 3: Add 2 to both sides.
[tex]-y-2+2=-x+2 \\ \\ -y=-x+2[/tex]
STEP 4: Multiply both sides by -1.
[tex](-1)(-y)=(-1)(-x+2) \\ \\ y=x-2[/tex]
So, [tex]m=1[/tex] and [tex]b=-2[/tex]. The graph of this line passes through these points:
[tex]If \ x=0 \ then: \\ \\ y=x-2 \therefore y=(0)-2 \therefore y=-2 \\ \\ Passes \ through \ (0,-2) \\ \\ \\ If \ y=0 \ then: \\ \\ y=x-2 \therefore 0=x-2 \therefore x=2 \\ \\ Passes \ through \ (2,0)[/tex]
By plotting this line, we get the line shown in the first figure below. To know whether the shaded region is either above or below the graph, let's take point (0,0) to test this, so from the inequality:
[tex]x-y-2\geq 0 \\ \\ Let \ x=y=0 \\ \\ 0-0-2\geq 0 \\ \\ -2\geq 0 \ False![/tex]
Since this statement is false, then the conclusion is that the region doesn't include the origin, so the shaded region is below the graph as indicated in the second figure below. The inequality includes the symbol ≥ so this means points on the line are included in the region and the line is continuous.
The diagonal of a square is x units. What is the area of the square in terms of x?
Answer:
[tex]\frac{1}{2}[/tex] x²
Step-by-step explanation:
let the length of the side be l
Then using Pythagoras' identity on the right triangle formed by the diagonal ( hypotenuse ) and the 2 sides
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
l² + l² = x²
2l² = x² ( divide both sides by 2 )
l² = [tex]\frac{1}{2}[/tex] x² ( since A of square = l² )
WILL MARK BRAINLEST PLEASE HELP!!!!!
Answer:
C
Step-by-step explanation:
your answer will be option number
(3) {(1,1),(2,9),(4,8)}
I hopes its help's u
please follow me..!!
@Abhi.❤❤
Which normal distribution has the greatest standard deviation?
Answer with explanation:
Both the normal distribution curves have sample mean equal to 16.
Normal distribution curve 1 is more wider than Curve 2, resulting in greater standard deviation.
So, Curve 1 has the greatest standard deviation.
The first normal distribution curve has the greatest standard deviation.
Standard deviation describes how far from the mean the given data set spread out.
A normal distribution that is widely spread out has a high standard deviation while a normal distribution that is close to the mean has low standard deviation.From the given normal distribution curves, the first curve is widely distributed than the second which is clustered around the mean.Thus, we can conclude that the first normal distribution curve has the greatest standard deviation.
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This is what I am supposed to do, I’m confused on what to do on 3,4, and 5. PLEASE HELP ASAP!!!!!! 30 POINTS!!!!!
Answer:
see explanation
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
To calculate m use the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
3
Using (x₁, y₁ ) = (0, 0) and (x₂, y₂ ) = (- 3, 6)
m = [tex]\frac{6-0}{-3-0}[/tex] = [tex]\frac{6}{-3}[/tex] = - 2
Since the line passes through the origin (0, 0) then y- intercept is 0
y = - 2x ← equation of line
4
let (x₁, y₁ ) = (6, 0) and (x₂, y₂ ) = (0, 3)
m = [tex]\frac{3-0}{0-6}[/tex] = [tex]\frac{3}{-6}[/tex] = - [tex]\frac{1}{2}[/tex]
note the line crosses the y- axis at (0, 3) ⇒ c = 3
y = - [tex]\frac{1}{2}[/tex] x + 3 ← equation of line
5
let (x₁, y₁ ) = (0, 3) and (x₂, y₂ ) = (-2, - 3)
m = [tex]\frac{-3-3}{-2-0}[/tex] = [tex]\frac{-6}{-2}[/tex] = 3
note the line crosses the y- axis at (0, 3) ⇒ c = 3
y = 3x + 3 ← equation of line
Solve the following addition and subtraction problems. 72km95hm+7g12cg18mg= 12dag5g−7g= 4kg2hg14kg+5kg17hg= 8kg−9g−−−−−−−−−−
Answer:
a. 8g 1dg 3cg 3mg
b. 11dag 8g
c. 24kg 9hg
d. 7kg 1hg
Step-by-step explanation:
Answer:
a. 8g 1dg 3cg 3mg
b. 11dag 8g
c. 24kg 9hg
d. 7kg 1hg
Step-by-step explanation:
got it from the other person
Simplify the following expression: square root of -36 + square root of -100 +7
Answer:
[tex]\large\boxed{\sqrt{-36}+\sqrt{-100}+7=7+16i}[/tex]
Step-by-step explanation:
[tex]\sqrt{-1}=i\\\sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\=====================\\\\\sqrt{-36}=\sqrt{(36)(-1)}=\sqrt{36}\cdot\sqrT{-1}=6i\\\sqrt{-100}=\sqrt{(100)(-1)}=\sqrt{100}\cdot\sqrt{-1}=10i\\\\\sqrt{-36}+\sqrt{-100}+7=6i+10i+7=7+16i[/tex]
Answer:
The answer is [tex]16i+7[/tex]
Step-by-step explanation:
In order to determine the answer, we have to know about imaginary numbers.
The imaginary numbers are different to real numbers because they use a new unit called "imaginary unit":
[tex]i=\sqrt{-1}[/tex]
i: imaginary unit
This new unit is applied like a factor when we have even roots with negative numbers inside.
In this case:
[tex]\sqrt{-36}=\sqrt{-1}*\sqrt{36}=6i\\\sqrt{-100}=\sqrt{-1}*\sqrt{100}=10i\\ \\\sqrt{-36}+\sqrt{-100}+7\\ 6i+10i+7\\16i+7[/tex]
Finally, the answer is [tex]16i+7[/tex]
Evaluate the expression for the given values. (5 x - 4 y) 2 given x = 1 and y = -1.
[tex]((5 \times 1) - (4 \times - 1) = \\ 5 - ( - 4) = \\ 5 + 4 = \\ 9[/tex]
The tangent ratio is used for _
triangles.
acute
Obtuse
Right
All
Your answer is a right triangle, reason is because they usually use it for right triangles, not obtuse nor acute. Tangent ratio is used to find the length for the right triangle sides and it also gives the degree for each right triangle angle (right triangle has three angles, where there are 2 angles and 1 right angle.)
Hope this helped!
Nate
Answer:
The tangent ratio is used for right triangles.
Step-by-step explanation:
We have been given an incomplete statement. We are supposed to fill in the given blank for statement using correct option.
Statement:
The tangent ratio is used for _ triangles.
We know that tangent is a trigonometric ratio, which represent relation between opposite side of right triangle to its adjacent side.
Therefore, the correct term for our given statement is 'right' and option C is the correct choice.
Determine whether quadrilateral ABCD with vertices
A(-4,-5), B(-3,0), C(0, 2), and D(5, 1) is a trapezoid.
Answerits not
Step-by-step explanation:
Answer:
Step 1: 5
Step 2: -1/5
Step 3: 2/3
Step 4: 2/3
Only one pair of opposite sides is parallel
Step-by-step explanation:
Help meeeeeeeeeeeeee
Answer: Second Option
[tex]f (x)=\frac{2}{x}[/tex] and [tex]g(x)=\frac{2}{x}[/tex]
Step-by-step explanation:
If we have a function f(x) and its inverse function [tex]f ^ {- 1} (x) = g (x)[/tex]
Then by definition:
[tex](fog) (x) = (gof) (x) = x[/tex]
Notice that the inverse of the function [tex]f (x)=\frac{2}{x}[/tex] is [tex]f ^ {- 1}(x)=\frac{2}{x}[/tex]
then:
If [tex]f (x)=\frac{2}{x}[/tex] and [tex]g(x)=\frac{2}{x}[/tex]
Then:
[tex](fog) (x) =\frac{2}{\frac{2}{x}}[/tex]
[tex](fog) (x) =\frac{2x}{2}[/tex]
[tex](fog) (x) =x[/tex]
The answer is the second option
Tyrese works each day and earns more money per hour the longer he works. Write a function to represent a starting pay of $20 with an increase each hour by 3%. Determine the range of the amount Tyrese makes each hour if he can only work a total of 8 hours.
A. 20 ≤ x ≤ 22.07
B. 20 ≤ x ≤ 24.60
C. 20 ≤ x ≤ 25.34
D. 20 ≤ x ≤ 26.10
Answer:
Option B - [tex]20\leq x\leq 24.60[/tex]
Step-by-step explanation:
Given : Tyrese works each day and earns more money per hour the longer he works. Write a function to represent a starting pay of $20 with an increase each hour by 3%.
To find : Determine the range of the amount Tyrese makes each hour if he can only work a total of 8 hours.
Solution :
A starting pay is $20.
let x be the number of hours.
There is pay of $20 with an increase each hour by 3%.
i.e. Increment is [tex]\frac{3}{100}\times 20\times x=\frac{3}{5}x[/tex]
Total earnings a function can represent is
[tex]y=20+\frac{3}{5}x[/tex]
We have given, he can only work a total of 8 hours.
So, The maximum amount she make in 8 hours is
[tex]y=20+\frac{3}{5}\times 8=20+4.8[/tex]
[tex]y=24.8[/tex]
Initial amount is $20.
Therefore, The range of the amount Tyrese makes each hour if he can only work a total of 8 hours is [tex]20\leq x\leq 24.80[/tex]
So, Approximately the required result is option B.
Which point below is not on the graph of p(x) = +36- X?
(-13,7)
• (-35, 1)
O (11,5)
o (27,3)
SUBMIT ANSWER
ASK FOR HELD
Answer:
We have the following equation: y = 36 - x. And we need to find which of the following points belong to the graph:
(-13,7) (-35, 1) (11,5) (27,3)If any of the points belong to the equation, then the equality will be met.
Then:
(-13,7) :7 = 36 - (-13)
7 = 36 + 13
7 = 49 ❌
(-35, 1) :1 = 36 - (-35)
1 = 71❌
(11, 5) :5 = 36 - 11
5 = 25 ❌
(27,3)3 = 36 - 27
3 = 9 ❌
None of the points belong to the graph. Therefore, all points are NOT on the grah of p(x) = 36 - x.
Answer:
ANSWER IS (-35,1)
Step-by-step explanation:
I got it because I am looking at the answer right now
please help , 1-10 , thanks !
Answers:
22
9
20
17
20
35
26
32
23
9
Solve for x in the equation x^2+ 4x-4=8.
X = -6 or x = 2
X=-2+or-2sqrt2
x = -2 or x = 6
x=2+or-2sqrt2
Answer:
x = -6 or x = 2
Step-by-step explanation:
The given equation is:
[tex]x^{2}+4x-4=8\\\\ x^2+4x-4-8=0\\\\ x^2+4x-12=0\\\\[/tex]
This is quadratic equation, so we can use the quadratic formula to find the roots of the equation i.e. the value of x that satisfy the given equation.
According to the quadratic formula, the two roots will be:
[tex]x=\frac{-b \pm \sqrt{b^{2}-4ac}}{2a}[/tex]
Here,
a = coefficient of x² = 1
b = coefficient of x = 4
c = constant term = -12
Using these values, we get:
[tex]x=\frac{-4 \pm \sqrt{(4)^2-4(1)(-12)}}{2(1)}\\\\ x=\frac{-4 \pm \sqrt{64}}{2}\\\\ x=\frac{-4 \pm 8}{2}\\\\ x = \frac{-4-8}{2} , x = \frac{-4+8}{2}\\\\ x=-6, x = 2[/tex]
Thus, the two values of x that satisfy the given equation are: -6 and 2. So 1st option gives the correct answer.
Using the figure below, select the two pairs of alternate exterior angles.
1 and 4
2 and 3
6 and 7
5 and 8
Answer:
1 and 4
5 and 8 are alternate exterior angles
2 and 3
6 and 7 are alternate interior angles
Step-by-step explanation:
The alternate exterior angles are the angles on the outside that are opposite each other
1 and 4 are alternate exterior angles
5 and 8 are alternate exterior angles
The alternate interior angles are the angles on the inside that are opposite each other
2 and 3 are alternate interior angles
6 and 7 are alternate interior angles
Answer:
1 and 4 , 5 and 8
Step-by-step explanation:
if f(x) = x + 7 and g(x) = 1/x -13, what is the domain of (f O g)(x)
Answer:
domain of (f O g)(x) is {x|x≠0}
Step-by-step explanation:
Given:
f(x) = x + 7
g(x) = 1/x -13
Putting g(x) in f(x) i.e f(g(x))
(fog)(x)= 1/x -13 +7
= 1/x-6
Domain of 1/x-6 is {x|x≠0} !
For this case we have the following functions:
[tex]f (x) = x + 7\\g (x) = \frac {1} {x} -13[/tex]
We must find [tex](f_ {0} g) (x).[/tex] By definition we have to:
[tex](f_ {0} g) (x) = f (g (x))[/tex]
So:
[tex](f_ {0} g) (x) = \frac {1} {x} -13 + 7 = \frac {1} {x} -6[/tex]
By definition, the domain of a function is given by all the values for which the function is defined.
The function [tex](f_ {0} g) (x) = \frac {1} {x} -6[/tex] is no longer defined when x = 0.
Thus, the domain is given by all real numbers except zero.
Answer:
x nonzero
Reflect the triangle across the y-axis, and then translate the image 5 units down.
The final image is the same as which of the following transformations?
1.Translate 5 units down, and then reflect over the x-axis.
2.Translate 5 units down, and then reflect over the y-axis.
3.Rotate 180° about the origin.
4.Reflect over the x-axis, and then translate 5 units left.
This question is based on the slide reflection. Therefore, the correct option is (2), that is, translate 5 units down, and then reflect over the y-axis.
Given:
Reflect the triangle across the y-axis, and then translate the image 5 units down.
We have to choose the correct option as per given question.
According to the question,
It is a slide reflection.
In this case, the order of sliding and reflection is not necessary, if the gliding is parallel to the line of reflection.
Hence, the equivalent to translate five units down, and then reflect over the y-axis.
In general, that rotations will not be equivalent to an odd number of reflections.
Therefore, the correct option is (2), that is, translate 5 units down, and then reflect over the y-axis.
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a line of best fit predicts that when x equals 32
, y will equal 34.215 but y actually equals 30. what is the residual in this case
Answer:
Residual in this case is -4.215
Step-by-step explanation:
A residual can be defined by
Residual = Actual value - Predicted value
We are given:
Predicted value of y = 34.215
Actual value of y = 30
Putting values in the formula:
Residual = Actual value - Predicted value
Residual = 30 - 34.215
Residual = -4.215
So, residual in this case is -4.215
which equation represents a line that passes through (0,-8) and (-5,23)
Answer:
[tex]\large\boxed{y=-\dfrac{31}{5}x-8}[/tex]
Step-by-step explanation:
The slope-intercept form of an equation of a line:
[tex]y=mx+b[/tex]
m - slope
b - y-intercept - (0, b)
The formula of a slope:
[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]
====================================
We have the points (0, -8) → b = -8, and (-5, 23).
Substitute:
[tex]m=\dfrac{23-(-8)}{-5-0}=\dfrac{31}{-5}=-\dfrac{31}{5}[/tex]
Put the value of the slope and of the y-intercept to the equation of a line:
[tex]y=-\dfrac{31}{5}x-8[/tex]
Which expression is equivalent sqrt10/4sqrt8
Answer:
The correct option is A
Step-by-step explanation:
The given expression is:
√10/4√8
We have to eliminate the √ from the denominator
4√8 = (2^3)^1/4
Multiply the whole expression by (2)^1/4
=(2)^1/4 * √10/ 2^(1/4)*(2^3)^(1/4)
= 2^(1/4) · 10^(2/4) / 2^1/4+3/4
=2^(1/4) · 10^(2/4) / 2^1+3/4
=2^(1/4) · 10^(2/4) / 2^4/4
=2^(1/4) · 10^(2/4) /2
=2^(1/4) · 100^(1/4) /2
=200^1/4 /2
= 4√200 /2
Thus the correct option is A....
Answer:
correct answer is a
Step-by-step explanation:
Solve -2 (t- 1) = 18
Answer:
t=-8
Step-by-step explanation:
-2 (t- 1) = 18
Divide each side by -2
-2 (t- 1)/-2 = 18/-2
t-1 = -9
Add 1 to each side
t-1+1 = -9+1
t = -8
Answer:
t = -8
Step-by-step explanation:
Isolate the variable, t. Note the equal sign, what you do to one side, you do to the other.
First, Divide -2 from both sides:
(-2(t - 1))/-2 = (18)/-2
t - 1 = 18/-2
t - 1 = -9
Isolate the variable t. Add 1 to both sides:
t - 1 (+1) = -9 (+1)
t = -9 + 1
t = -8
t = -8 is your answer.
~
help asap!! interpret the meaning of the expression
Answer:
D
Step-by-step explanation:
This is exponential growth, and to my understanding, the format goes:
initial amount (percent growth/ decay)^time
percent growth = (decimal percent + 1)
percent decay = (1 - decimal percent)
Your equation:
1500(1.02)^t
Using the above format, 1500 appears to be the initial amount, which increases by 2% per annum.
i think
(03.02)
If g(x) = 2(x - 4), find the value of x if g(x) = 20. (2 points)
Answer:
14
Step-by-step explanation:
20=2(x-4)
therefore, x=14
Answer:
2(x -4) = 20
2x - 8 = 20
2x = 28
x = 14
Solve.
11m - 15 -5m= 9
Answer:
m=4
Step-by-step explanation:
11m - 15 -5m= 9
Combine like terms
6m -15 =9
Add 15 to each side
6m - 15+15 = 9+15
6m = 24
Divide each side by 6
6m/6 =24/6
m = 4
A miner dug to a point 1680 feet below sea level.
Write a signed number to represent this elevation.
Answer:
-1680
Step-by-step explanation:
Above would be positive.
Below would be negative.
You have 1680 below, so the answer as a signed number for the elevation would be -1680.
The signed number - 1680 feet addresses the excavator's exhuming point 1680 feet underneath ocean level (negative worth demonstrates beneath ocean level).
How to write a signed number to represent this elevation.The signed number addressing the height of the point 1680 feet beneath ocean level is - 1680 feet. The negative sign demonstrates that the worth is beneath the reference point, which for this situation is ocean level.
With regard to heights, we utilize positive numbers to address positions over the reference point (ocean level) and negative numbers to address positions beneath it.
The miner dug downward in this scenario, lowering the elevation above sea level. Since it is below the reference point, the elevation is negative.
The greatness of - 1680 feet shows the separation from ocean level to the place of removal, and the negative sign demonstrates the bearing beneath ocean level.
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Evaluate the function.
a. f(x) = 3x+5 {-2,0,2}
b. g(x) = x-9 find g(5)
c. f(n) = (3-n) + 4 {-1,-2,3}
Answer:
Part a) The values of the function f(x) are {-1,5,11}
Part b) The value of g(5) is -4
Part c) The values of the function f(n) are {8,9,4}
Step-by-step explanation:
Part a) we have
f(x)=3x+5
Evaluate for {-2,0,2}
1) For x=-2
substitute the value of x in the function
f(-2)=3(-2)+5=-1
2) For x=0
substitute the value of x in the function
f(0)=3(0)+5=5
3) For x=2
substitute the value of x in the function
f(2)=3(2)+5=11
Part b) we have
g(x)=x-9
Evaluate for x=5
substitute the value of x in the function
g(5)=5-9=-4
Part c) we have
f(n)=(3-n)+4
Evaluate for {-1,-2,3}
1) For n=-1
substitute the value of n in the function
f(-1)=(3-(-1))+4=8
2) For n=-2
substitute the value of n in the function
f(-2)=(3-(-2))+4=9
3) For n=3
substitute the value of n in the function
f(3)=(3-(3))+4=4