Answer:
Step-by-step explanation:
Given that:
sin2xcos x + cos2xsin x = -1
Recall that;
SInAcosB + cosASinB = SIn (A+B)
SIn (2x +x) = -1
Sin (3x) = -1
[tex]x = \bigg [\dfrac{Sin ^{-1} (-1)}{3} \bigg ][/tex]
[tex]x = \dfrac{\pi}{2} + \dfrac{2 \pi \ k}{3}[/tex]
[tex]x = \dfrac{\pi}{2}, \dfrac{7 \pi}{6}, \dfrac{11 \pi}{6}[/tex]
Question 16 (5 points)
Solve |2x - 3|= 4x
A x= 1/2
B) x = -3/2 or x = 1/2
C) No solutions
D) x= -3/2
Answer:
D. x=-3/2.
Step-by-step explanation:
4x÷2x=-3
2x=-3
x=-3/2
Please help asap I attached the question!!!!
Help it’s past due, sorry for the bad quality
Answer: The answer is B.
Step-by-step explanation:
What is the value of (4 minus 2) cubed minus 3 times 4? a.Negative 20 b.Negative 4 c.4 d. 20
Answer:
B. Negative 4
Step-by-step explanation:
Evaluate the function f (x) = 4x^2 - 10x + 2 find f (-7)
Answer:
268
Step-by-step explanation:
Substitute -7 where x is in the equation which would be 4(-7)^2 -10 (-7) +2
simplify the equation and you should get 268
Ben bought a bag of potatoes that weighed 2.25 pounds. He also bought 2 boxes of raisins that weighed 0.375 pound each and 2 bags of apples that weighed 1.5 pounds each. Ben carried all items except for one bag of apples, which his brother carried. How many total pounds did Ben carry?
A.
1.5 pounds
B.
4.125 pounds
C.
4.5 pounds
D.
5.625 pounds
Answer:
The correct answer is C. 4.5 pounds.
Step-by-step explanation:
Since Ben bought a bag of potatoes that weighed 2.25 pounds, 2 boxes of raisins that total weighed 0.750 pounds (0.375 x 2), and 2 bags of apples that weighed 3 pounds total (1.5 x 2), the total weight of the merchandise purchased by Ben was 6 pounds.
Now, since his brother carried a bag of apples, which weighed 1.5 pounds, the total weight carried by Ben was 4.5 pounds (6 - 1.5).
In the following picture, the perpendicular bisectors of triangle DFH are shown as dashed lines and meet at point K.
Answer:
DH= 42
HG=26
JH=21
DK=28.1
DF=46
EF=23
KH=28.1
FH=52
Step-by-step explanation:
I just took the quiz
Thank me later.
PLEASE HELP I WILL GIVE BRAINLIST PLEASEEEEEEE!!!!!!
The price of a set of headphones is $79.00 plus 8% sales tax. What is the sales tax on this set of headphones in dollars and cents?
Answer: $6.32
Step-by-step explanation:
$79.00 x .08 = $6.32 sales tax
In the equation y = -2x + 5, what is the average rate of change (slope)?
a. 5
b. 2
c. -2x
d. -2
please explain
Answer:
-2
Step-by-step explanation:
Is there a proportional relationship between x and y? Explain.
Answer:
Where's the question?
Step-by-step explanation:
Henry went clothes shopping and bought 3 pairs of shorts for $22.99 each, 2
shirts for $32.99 each and one pair of shoes for $54.99. What is the most
reasonable estimate of the total amount he spent on all the clothing?
A. $135
O B. $184
C. $190
D. $223
Answer:
$190
Step-by-step explanation:
22.99 times 3 = 66.97
32.99 times 2 = 65.98
one pair of shoes is 54.99.
66.97 + 65.98 + 54.99 = 187.94
187.94 is closer to 190
The diagram shows the back fences of three houses in a small neighborhood. The lengths of the fences are given.
Pythagorean theorem: a2 + b2 = c2
A triangle has side lengths 12 meters, 5 meters, 13 meters.
Use the Pythagorean theorem to classify the triangle formed by the three fences. Which is true about the numbers 5, 12, and 13?
They are a Pythagorean triple that does not form a right triangle.
They are a Pythagorean triple that forms a right triangle.
They do not satisfy the Pythagorean theorem, but they do form a right triangle.
They do not satisfy the Pythagorean theorem, and they do not form a right triangle.
Answer:
answer is B
Step-by-step explanation:
Answer:
They are a Pythagorean triple that forms a right triangle
Step-by-step explanation:
At a summer job, Maya is painting houses. She charges a $100 fee to start a job and $25 per
hour for each hour she spends on the job. Complete the table belly to show how much
money Maya makes painting one house.
Answer:
the answer would 125
Step-by-step explanation:
Answer:
I think the answer will be 225. Because 1st she got 100 for starting the job and 25 $ for per hour. She did 5 hours. So five times 25 . It will be 125 and 100 . The answer is 225
Kit made contributions to a Roth IRA over the course of 30 working years. contations average $2.000 in the exact she
on the account was 6. Upon retirement, stopped working and making Roth IRA Contributions stead been on trommet
tax bracket. Factoring in taxes, what is the effective value of Roth IRA a brement assume annual compounding (3)
O $287.432.74
$305.432.74
$240 335.88
O $298 232.74
Answer: the third i think
If triangle FGH is congruent to triangle QRS, find the measure of triangle Q
Answer:
D. 28°Step-by-step explanation:
As per diagram
∠F ≅ ∠Q∠F = 2x + 10 and ∠Q = 3x + 1m∠Q = ?
2x + 10 = 3x + 13x - 2x = 10 - 1x = 9m∠Q = 3x + 1 = 3*9 + 1 = 28°Correct option is D
HELPPPPPP ASAPPPP PLZZZ!!!
What is 80% of 200?
160
180
40
190
Answer: 160
Step-by-step explanation: ure welcome
Answer: 160
Step-by-step explanation:
80% of 200 = 160
Evan earns money for doing chores. He earns $3 for putting away laundry and $4 for unloading the dishwasher. Evan wants to earn a total of $36. Let x represent the number of times Evan puts away the laundry and y represent the number of times he unloads the dishwasher. Write a linear equation for the situation and determine which ordered pair below would be a solution. a.(0,8) b.(4,6) c.(3,6) d.(1,12)
Answer:B(4,6)
Step-by-step explanation: ima pro at math
3*4=12+ 6*4=24
=36
The linear equation representing the situation is 3x + 4y = 36 and the coordinate (4, 6) represents the solution of this linear equation.
What is Equation Modelling?Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.
Given is Evan who earns money for doing chores. He earns $3 for putting away laundry and $4 for unloading the dishwasher.
Assume that [x] represent the number of times Evan puts away the laundry and [y] represent the number of times he unloads the dishwasher.
The total money Evan needs = $36.
We can write the linear equation representing the situation is as follows -
3x + 4y = 36
It can be seen that, the coordinate (4, 6) would be the solution of the linear equation as -
3 x 4 + 4 x 6 = 12 + 24 = 36
Therefore, the linear equation representing the situation is 3x + 4y = 36 and the coordinate (4, 6) represents the solution of this linear equation.
To solve more questions on equation modelling, visit the link below-
https://brainly.com/question/18829645
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A quiz had 20 questions. Andre scored 16 of them correctly. What was
Andre's percent score? *
Answer:
He got an 80 percent.
Step-by-step explanation:
NUMERATOR
DENOMINATOR
4/40
Answer:
4 = numerator
40 = denominator
Answer:
Step-by-step explanation:
here,
the numerator is 4 ( numerator is the no. on the top )
the denominator is 40 ( the denominator is the no. on the bottom )
Hope this helps
plz mark as brainliest!!!!!
An experiment involves studying the composition of genders of a set of triplets. What is the \nprobability that there are 2 boys and a girl in the set?
Answer:
37.5%
Step-by-step explanation:
The computation is shown below:
Here we assume that the 1st, 2nd and 3rd child be the triplet and it could be either a girl or boy
Now
B = Boy
G = Girl
The possible triplets are
(BBB) (BBG) (BGB) (BGG) (GBB) (GBG) (GGB) (GGG)
These are 8 triplets
Now find the sets that involves 2 boys and a girl
(BBG) (BGB) (GBB)
Now the probability is
P = 3 ÷ 8
= 37.5%
If f(x)2x-3 find the following.
Answer:
f is 6-
Step-by-step explanation:
solve: -5/9 - 2/9
please I really need this answer quickly
Answer:
The answer is last option
Step-by-step explanation:
[tex] - \frac{5}{9} - \frac{2}{9} = - \frac{(5 + 2)}{9} = - \frac{7}{9} [/tex]
Answer:
3. -7/9
Step-by-step explanation:
Plz help, it’s been due for a long time now but I need help.
Answer:
< 4, < 10 corresponding
< 2, < 3 same side interior
< 8, < 12 other (opposite exterior)
< 6, < 12 alternate interior
< 1, < 2 other (supplementary)
< 15, < 11 alternate interior
< 8, < 9 same side interior
< 2, < 4 corresponding
Two lines that are stretched into infinity and still never intersect are called co-planar lines and are said to be parallel lines. ... Corresponding angles are congruent if the two lines are parallel. All angles that have the same position with regards to the parallel lines and the transversal are corresponding pairs.
The expression 28 + 63 is equivalent to
1 91
2 5,7
3 6/7
4 13,7
Answer:
1) 91
Step-by-step explanation:
28 + 63 = 91
What is the equation of this graphed line?
A graph with a line running through coordinates (0, 7) and coordinates (8, -2)
Enter your answer in slope-intercept form in the box
Answer:
y = x2 - x1 / y2 - y1 so this is y = 8/-9x + the y intercept which is the line where it crosses the y line
Step-by-step explanation:
Write the equation of a line in slope- intercept form passing through these two points (-1,-2) and (1,4)
Answer:
y=3x+1
Step-by-step explanation:
4--2=6
1--1=2
6/2=3
slope is 3
4=3(1)+b
4=3+b
4-3=3-3+b
1=b
1 is the y intercept
Answer:
y = 3x + 1
Step-by-step explanation:
(x₁, y₁) = (-1, -2) & (x₂ , y₂) = (1, 4)
[tex]slope = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\[/tex]
[tex]= \frac{4-[-2]}{1-[-1]}\\\\= \frac{4+2}{1+1}\\\\= \frac{6}{2}\\\\= 3[/tex]
m = 3
y -y₁ = m(x - x₁)
y - [-2] = 3(x - [-1])
y + 2 = 3(x +1)
y + 2 = 3x + 3
y = 3x + 3 -2
y = 3x + 1
On a coordinate plane, a line goes through (negative 4, 0) and (0, 2).
The graph of the equation y = 1
2
x + 2 is displayed. Which equations would intersect the orange line at the y-intercept? Check all that apply.
y = 7x + 2
y = 3x + 5
y = 2 minus StartFraction 7 Over 3 EndFraction x
y – 2 = 4x
3y = –9x – 6
Answer:
y – 2 = 4x
3y = –9x – 6
Step-by-step explanation:
Answer:
a, c, d
Step-by-step explanation:
Point R on the coordinate grid below shows the location of a car in a parking lot. A second car needs to park 5 units above R to leave room for a utility truck. What are the coordinates of the location of the second car?
Image of a coordinate grid with point R located at negative 4, negative 2.
Answer: -4 and 2
Step-by-step explanation:
negative 4 and positive 2 is the answer
Answer: (-4, -2)
Step-by-step explanation: I got an A+ on the test
Plz help me
Clark made four of his truck payments late and was fined four late fees. The total change to his savings from late fees was -$40. How much was one late fee?
Answer:
-10
Step-by-step explanation:
If he has four trucks and the total was -40 then one is 10
Divide 40÷10 =10
Answer: the answer is 10
Step-by-step explanation: