Answer:
-8
Step-by-step explanation:
Let cos(2x) - cos(x) = 0 where 0° < x <180° what are the possible values of x
Answer:
x= 120°
Step-by-step explanation:
cos(2x)-cos(x)=0
[tex]\Rightarrow 2\cos^2x-\cosx-1=[/tex]0 [as [tex]\cos(2x)=2\cos^2x-1[/tex]]
[tex]\Rightarrow 2\cos^2x-2\cosx +\cosx-1=0[/tex]
[tex]\Rightarrow 2\cos x(\cos x-1) +(\cos x-1)=0[/tex]
[tex]\Rightarrow (\cos x-1)(2\cos x +1)=0[/tex]
[tex]\Rightarrow \cos x-1=0 \;or\; 2\cos x +1=0[/tex]
[tex]\Rightarrow \cos x=1 \;or\; \cos x =-1/2[/tex]
[tex]\Rightarrow x=\cos^{-1}1 \;or\; x =\cos(-1/2)[/tex]
For [tex]x=\cos^{-1}1[/tex] and 0° < x <180°
There is no possible value of x.
For [tex]x =\cos(-1/2)[/tex] and 0° < x <180°
The possible value of x is
x= 120°
Answer:
C/ 0 or 120
Step-by-step explanation:
edge 2020
Beach balls are very popular at
Sam's Swim Shop. He decides
to begin charging 40% more.
If he originally charged $5.50,
then how much will Sam charge
now?
Answer:
$10 i think
Step-by-step explanation:
The vertex angle of an isosceles triangle measures 40°. What is the measure of a base angle?
Answer:
70°
Step-by-step explanation:
In an isosceles triangle the 2 base angles are congruent , thus
base angle = [tex]\frac{180-40}{2}[/tex] = [tex]\frac{140}{2}[/tex] = 70°
If what is y in terms of e, n, k, and t?
Answer:
n
Step-by-step explanation:
Plz help with graph polynomial
Answer:
(x + 1 ) is a factor
Step-by-step explanation:
Given a polynomial with roots x = a, x = b , then the corresponding factors are
(x - a) and (x - b)
From the graph
The roots are x = - 1 and x = 4 , thus factors are
(x - (- 1)) and (x - 4) , that is
(x + 1) and (x - 4)
(x + 1) is the required factor
What kind of transformation is illustrated in this figure?
A) reflection
B) translation
C) dilation
D) rotation
Answer:
Translation
Step-by-step explanation:
Translation means that it moves without changing shape, and here it just moves to the right, but the shape is still the same
Help pls I will give brainliest and 5 STAR RATING BUT NEED A EXPLANATION
Answer:
C
Step-by-step explanation:
3706*4
3000*4=12000
700*4=2800
6*4=24
12000+2800+24=14824
State the number of complex roots, the number of positive real roots and the number of negative real roots of x^4 - x^3 - 6x +3 =0.
answer:
complex roots 2 or 4
positive reall roots: 2 or 0
negative real roots 0
Answer:
Which points are collinear?
G, A, and T
G, E, and T
A, T, and E
G, A, and E
Step-by-step explanation:
that what i nkow sorry
Answer:
2 complex roots
2 positive real roots
0 negative real roots
Brainliest please?
The price of one Disney's Share declined a total of $475 in 5 days. What was the average change of the price of one share per day?
Answer:
$95 in one day
Step-by-step explanation:
$475 divided by 5 is $95.
I apologize if I'm wrong
At Healthy Hair, the cost of a children's hair cut (x) is $4 and the cost of an adult haircut (y) is $10. The manager's goal for the day is to have at least 10 children's cuts and at least
20 adult cuts, and to have total sales be at least $500. Write a system to represent this situation.
Answer:4x +10y = 500
Step-by-step explanation:
Explain! Brainliest!
Answer:
Step-by-step explanation:
The LCM (lest common multiple) of 6 and 8 is 24
the multiples of 8 are 8, 16, 24, 32...
the multiples of 6 are 6, 12, 18, 24, 30...
They have 24 in common, so 24 is the answer
Answer:
B: 24
Step-by-step explanation:
the multiples of 8 are 8, 16, 24, 32...
the multiples of 6 are 6, 12, 18, 24, 30...
24 is the least common multiple that id the same with both numbers
Write down the value of angle x.
Write the value of angle y.
Answer:
angle y = 63
x= 49 ( v.o.a)
Step-by-step explanation:
Answer:
x=49
y=63
Step-by-step explanation:
X is 49 because it's opposite the other angle that's 49
y is 63 because along with that other angle that's 63 it's alternate to that other angle. Alternate angles are equal btw.
Have a good time and feel free to ask me again.
g(5a-2)+3g(2a) if g(x)=x^2-5x+8
The solution for the equation will be 37 a² - 55 a + 30
What is Linear Equation in 2 variables?
An equation is said to be linear equation in two variables if it is written in the form of ax + by + c=0, where a, b & c are real numbers and the coefficients of x and y, i.e a and b respectively, are not equal to zero.
Given data ,
g ( x ) = x² - 5 x + 8
To solve for g ( 5 a - 2 ) + 3 g ( 2 a ) , substitute for the value of x
Therefore ,
g ( 5 a - 2 ) = ( 5 a - 2 )² - 5 ( 5 a - 2 ) + 8
= ( 25 a² + 4 - 20 a ) - 25 a + 10 + 8
= 25 a² - 45 a + 22
3 g ( 2 a ) = 3 [ (2 a )² - 10 a + 8 ]
= 3 [ 4 a² - 10 a + 8 ]
= 12 a² - 10 a + 8
And , g ( 5 a - 2 ) + 3 g ( 2 a ) = 25 a² - 45 a + 22 + ( 12 a² - 10 a + 8 )
= 37 a² - 55 a + 30
Hence , the value of the equation will be 37 a² - 55 a + 30
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What is -1 1/4 + 1/2
plz mark as brainliest
Answer:
-1 3/4
Step-by-step explanation:
Please help I’ll give brainiest!!
Answer:
[tex]A.[/tex] [tex]y = \frac{5}{2}x + 1[/tex]
Step-by-step explanation:
Because if look closely at the top arrow it lines on 5 and 2 so that would be [tex]\frac{5}{2}[/tex] and then + 1 because it is also on the 1.
Hope I Helped! :)
The word total tells you that the operation involved in the relationship is
Answer:
the word total tells you the operation is addition
Target hs apple watches on sale this week for $349 and you get an additional 5% off if you use our red card. Best buy sells them for $389 and you have a coupon for 15% off. How much money would you save by purchasing the watch from the store with the better buy?
Given :
Target have apple watches on sale this week for $349 and you get an additional 5% off if you use our red card. Best buy sells them for $389 and you have a coupon for 15% off.
To Find :
How much money would you save by purchasing the watch from the store with the better buy.
Solution :
Selling price at Target :
S.P = $( 349 - 349×0.05)
S.P = $331.55
Selling price at Best buy :
S.P = $( 389 - 389×0.15 )
S.P = $330.65
Amount of price saved = $( 331.55 - 330.65 ) = $0.9 .
Hence, this is the required solution.
Write the inverse function,
f^-1 (x), for the function
f (x) = 2x + 3
[tex]f(x) = 2x + 3[/tex]
[tex]y = 2x + 3[/tex]
Subtract the sides of the equation minus 3
[tex]y - 3 = 2x[/tex]
Divided the sides of the equation by 2
[tex] \frac{y - 3}{2} = x \\ [/tex]
So ;
[tex] {f}^{ - 1}(x) = \frac{x - 3}{2} \\ [/tex]
_________________________________
And we're done.
Thanks for watching buddy good luck.
♥️♥️♥️♥️♥️
4 ( 11 + 7 ) = ? + 28
Let the missing number be x .
Then :-
[tex]4(11 + 7) = x + 28[/tex]
[tex]4 \times 18 = x + 28[/tex]
[tex]72 = x + 28[/tex]
[tex]x + 28 = 72[/tex]
[tex]x = 72 - 28[/tex]
[tex]x = 44[/tex]
Therefore , 4 ( 11 + 7 ) = 44 + 28 .
What is 10 1/5 as an improper fraction?
Answer:
51/5
Step-by-step explanation:
Multiply 10 by the denominator to get the numerator and keep the denominator the same.
The value of the mixed fraction 10¹/₅ as an improper fraction is 51/5.
What is a fraction?Any number of equal parts is represented by a fraction, which also represents a portion of a whole. A fraction is a number that is a component of a whole. By breaking a whole into a number of parts, it is evaluated.
To convert 10¹/₅ to an improper fraction, multiply your whole number (10) by your denominator (10 x 5 = 50), then add your numerator (1) 50 + 1 = 51. Now multiply that by your original denominator (5) to get 51/5.
In summary:- (whole number x denominator + numerator) / original denominator.
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Find the value of x in the given figure using properties of parallel lines.
OA) 36°
B) 54°
C) 18°
D) 27°
Answer:
C
Step-by-step explanation:
Write the expression in standard form.
(6f -3 + 2g)-(-4g + 2)
[a]
Answer:
6f + 6g -5
Step-by-step explanation:
(6f - 3 + 2g) - (-4g + 2)
= 6f - 3 +2g + 4g -2
= 6f + 6g -5
based on the scores in the chart below which restaurant is the best choice for the dinner tonight and why
A.Ku's Chinese buffet, because it had a total score of +2
B ku's Chinese buffet, because it has s total score of +12
C Umberots Italian Restaurant, because it has a total score of +3
D Umberots Itaian Restaurant, because it has a total score of +9
Answer:
B
Step-by-step explanation:
Ku's since it has the highest score with +12
The graph models a weight bobbing up and down on a spring. How far does the weight travel, going from maximum displacement to minimum displacement?
O2 inches
O4 inches
6 inches
O12 inches
Answer: B
4 inches
Step-by-step explanation:
The weight travel from maximum displacement to minimum displacement is 4 inches.
What is Displacement in wave?The relative shift in a wave's position that occurs when it passes through a medium is referred to as wave displacement.
When a wave oscillates, displacement is the movement of a particle or field relative to its resting location. The amplitude of the wave is a measurement and recording of the largest displacement that has place.
Given:
From the graph we can a wave.
Now, we can see that the Wave is 2 inches in crust and 2 inches in trough.
So, the weight travel from maximum displacement to minimum displacement is
= 2 + 2
= 4 inches.
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Enrique is measuring the mass of a flower petal. Which unit of measurement should he use to eliminate the need to write the value in scientific notation?
grams
centimeters
liters
kilograms
Answer:
the answer is A) grams
Step-by-step explanation:
just took the test on edge 2021
6-2(-4)/- (-2)
ahhh need help pleaseeee
Answer: 16
Step-by-step explanation:
Hope this helpsThe fraction in simplest form is 7
First, you must simplify the numerator and denominator of the fraction.
[tex]\frac{14}{2}[/tex]
Then, divide the numerator by the denominator
7
Lana collects 20-cent and 50-cent coins. The total value of her coins is currently $9.70. If Lana has 4 more 50-cent coins than 20-cent coins, how many of each type does she have? Thanks.
24 is equal to 25% of a number n. Write and solve an equation to find n. Write the percent as a Decimal. PLEASE HELP ME
Answer:
Equation: 25% x n = 24
n = 96
Step-by-step explanation:
Because of means to multiply 25% OF n would mean you multiply to solve for n you would do the opposite which is dividing. 25% is the same as .25 so you would do...
24 ÷ .25 = 96
So 96 = n
Hope that helps and have a great day!
Is the ordered pair (–8, –7) a solution to the equation 3x + 10 = 2y? Show your work.
Answer:
yes
Step-by-step explanation:
Substitute x = - 8 and y = - 7 into the equation
If both sides are equal then (- 8, - 7) is a solution
left side = 3x + 10 = 3(- 8) + 10 = - 24 + 10 = - 14
right side = 2y = 2(- 7) = - 14
Since both sides are equal then (- 8, - 7) is a solution to the equation
Carlos has a 50$ amazon gift card. He wants to buy some boxes of Halloween candy for 5.99$ each, but needs to save atleast 30$ so he can get his mom a birthday present
Answer:
he can only buy 3 boxes of candy. then he will be left over with 32.03
Step-by-step explanation:
Answer:
Carlos can buy three boxes of candy, buy his mom her present, and have two dollars and three cents left.
Step-by-step explanation:
50-30=20
20-5.99=14.01
14.01-5.99=8.02
8.02-5.99=2.03
Hope this helps!!