Answer:
1) 270 degrees
2) pi/4 rad
Step-by-step explanation:
1.) For which value of theta is sine theta = negative 1?
Given
sintheta = -1
theta = arcsin(-1)
theta = -90degrees
Since sin is negative in the third and 4th quadrant
In the third quadrant, theta = 180 + 90 = 270degrees
In the fourth quadrant, theta = 360 - 90 = 270 degrees
Hence the required value of theta is 270degrees
2) Given the radius of the circle to be 1, the y axis value will also be 1 units
Opposite = 1
adjacent = 1
hyp = √1²+1²
hyp = √2
sin theta = opp/hyp
sin theta = 1/√2
theta = arccsin(1/√2)
theta = 45 degrees
Express in radians
45 degrees = pi/4 radians
Hence the required angle in the first quadrant is pi/4 rad
Answer:
3pi/2
Step-by-step explanation:
that is only one that makes sine negative. others make it 0 or positive
Find the value of x. Round to the nearest degree as needed.
9514 1404 393
Answer:
x° = 29°
Step-by-step explanation:
The mnemonic SOH CAH TOA is intended to remind you of the relevant trig relationships. Here, you have the hypotenuse and the side opposite the unknown angle. So, the appropriate relation is ...
Sin = Opposite/Hypotenuse
sin(x°) = 12/25
x° = arcsin(12/25) ≈ 28.69°
The value of x is about 29.
1/2 (24) (7)
answer the question quick
Answer:
84 is your answer
Step-by-step explanation:
please mark me the brainlist
Answer:
84
Step-by-step explanation:
[tex]\frac{1}{2}*24*7 =[/tex] 12 * 7 = 84
help me with this too please
Answer:
this is a test but its he second one :D
Step-by-step explanation:
The point (-6, 4) lies on a straight line that has a gradient of -2. What is the
equation of this line?
Given:
Point on straight line = (-6,4)
Gradient = -2
To find:
The equation of the line.
Solution:
Point-slope form: If a line passes through the point [tex](x_1,y_1)[/tex] with slope m, then the equation of the line is
[tex]y-y_1=m(x-x_1)[/tex]
The line passes through the point (-6,4) with slope -2. So, the equation of the line is:
[tex]y-4=-2(x-(-6))[/tex]
[tex]y-4=-2(x+6)[/tex]
[tex]y-4=-2x-12[/tex]
Adding 4 on both sides, we get
[tex]y-4+4=-2x-12+4[/tex]
[tex]y=-2x-8[/tex]
Therefore, the equation of the line is [tex]y=-2x-8[/tex].
A store has a 20% off sale on pants. The price of the pants before the discount was $48.
What was the sale price of the pants?
Answer:
$38.40
Step-by-step explanation:
20% of $48 is 9.60
48- 9.60= 38.40
Answer:
$38.40
Step-by-step explanation:
1. convert the percentage into a decimal by dividing x/100.
20/100 = 0.2
2. multiply by the original price.
0.2 * 48 = 9.6
3. subtract the discount.
$48 - $9.60 = $38.40
A recipe calls for 3/4 cup of brown sugar for every 3 eggs. What is the unit rate of eggs per cup?
Answer:
4 eggs per cup
Step-by-step explanation:
How do you simplify sqrt 96 *
Answer:
4 times the square root of 6 (4[tex]\sqrt{6}[/tex] )
Step-by-step explanation:
Use a factor tree
Please help
..............
Answer:
2[tex]\pi[/tex]
Step-by-step explanation:
[tex]\frac{1}{6}[/tex]×2×6[tex]\pi[/tex]=2[tex]\pi[/tex]
Cine ma poate ajuta?
Answer:
u think its A if not sorry
Step-by-step explanation:
18. Write an expression to represent the perimeter of the figure below.
3) In Carter's math class, 20\% of students earned an A on a test. If there were 30 student in the class, how many did not get an A.
Answer:
24 students did NOT get an A
Step-by-step explanation:
30x.20=6
30-6=24
6(1 - 6x) < 38 - 4x
What is the answer to this equation.
Answer:
x>-1
Step-by-step explanation:
Answer:
x > -1
Step-by-step explanation:
-3( -5 + 9z) Combine Like Terms Using the Distributive Property
Answer:
multipy -3to the equation given in brackets
someone please help me
Answer:
Option B (2 in the blank)Step-by-step explanation:
Given function:
f(x) = 2x² - 5x + 7The leading term is 2x², the leading coefficient is 2, this is positive.
The graph opens upward.
Correct option is B.
False, because 2 > 0Option B is correct trust me my guy
What is the measure?
Answer:
70-45
Step-by-step explanation:
becauae w= 70-45 and w+45=70
Which method would be the best to solve the following system of equations?
Answer:
Graphing the equations and seeing where they intersect. Use DEMOS Graphing Calculator off of the internet. It works great. I even use it to check my work when I use algebra
This method also works well with quadratics and lines
Step-by-step explanation:
What is the solution to the equation below? Log subcript 6 4x^2 - log subcript 6 x=2
1. 1/12
2. 3/2
3. 3
4. 9
Answer:
Using the logarithmic Function
the answer is 3/2
I need help ASAP PLEASEEEEEEEE
Answer:
g has an average rate of change of zero at the intervals [-5,4] and [-2,2]
Step-by-step explanation:
When we talk of the average rate of change, we mean the change in y values divided by the change in x values
Once the change in y-values is zero, then over that interval, the average rate of change is zero
at the point t =- 5, g(t) = 6; at the point t = 4, g(t) = 6
As we can see here, within the interval [-5,4]; the average rate of change is 0
This same pattern is repetitive at points or ranges where we have same values for g(t)
such as;
[-2,2]
Explain why 4 x 2/5 is the same operation as 2/5 + 2/5 +2/5 + 2/5
Answer:
Step-by-step explanation: Multiply both numerators and denominators. Result fraction keep to lowest possible denominator GCD(8, 5)=1. In the next intermediate step the fraction result cannot be further simplified by cancelling. In words - four multiplied by two fifths=eight fifths.
Pls i gat no idea :/
Answer:
Step-by-step explanation:
The equation of a circle is (x-h)^2+(y-k)^2=r^2 where r is the radius of the circle and (h,k) is the coordinates of the center of the circle. We can see that the radius is 3 units and we are given the location of the center as (-3,1) so
(x+3)^2+(y-1)^2=9
Isabella is travelling in Brazil during the summer, She knows that a 15-minute phone call home to her family costs $45.85 and a 20-minute phone call costs $58.30 sabella only has $55.81 to spend on her phone call. How long can she talk to her family?
Calculate an
8% tax on an
$80 tablet.
Answer:
$6.40
Step-by-step explanation:
All you have to do is find 8% of 80 dollars. That means you do 8/100x80/1 which is equal to 32/5. Simplify this improper fraction to get $6.40. This means that 8% of 80 is $6.40.
Martin is buying inkjet cartridges that cost 22$ each.he has 100$ to pay for the cartridges.
Which number line shows the number of cartridges he can buy?
Answer:
4.45 or 4 so b
Step-by-step explanation:
Answer:
Its C hope this helps
Step-by-step explanation:
It’s due tonight!! I HAVE TO FIND “r” AS WELL! I NEED HELP
Find the value of JK
Answer:
10t = 7t + 15
3t = 15
t = 5
JK = 50
Tickets to the school play cost $9 for adults and $5 for students. The Wilson family bought 3 adult tickets and 4 student tickets. Which expression matches the situation?
A. 9(3) + 5(4)
B. 3(5) + 9(4)
C. (5+9) + (3+4)
D. 47
A
Because of 3 adults bought 3 tickets, 9 x 3. 9(3)
4 students bought 4 tickets, 4 x 5, 4(3)
What’s the side length?
Answer:
11.18
Step-by-step explanation:
Pythagorean Theorem:
a² + b² = c²
The hypotenuse is c.
10² + b² = 15²
Square 10 = 100
Square 15 = 225
100 + b² = 225
225 - 100 = 125
Find the Square Root of 125.
11.18033989 or 11.18
Joshua unfolded a cardboard box. The figure of the unfolded box is shown below:
Which calculation will give the total surface area of the cardboard, in square inches, that was used to make the box? (1 point)
Question 14 options:
1)
6 × 3 × 3
2)
3 × 6 × 6
3)
9 × 6 × 6
4)
6 × 9 × 9
Answer:
1) 6 * 3 * 3
Step-by-step explanation:
Assuming the box is a cube, the surface area would be 6 times one side's area (since in a cube each side is a square) or A=6s^2 where s is a side length of the cube. This means that the surface area is 6*3*3=6*9=54 in^2
5x-y<-6 and 3x-y>/4
Due tonight!!!
Answer:
1.
x<1/5y + -6/5
2.
x>1/3y + 4/3
help please! ill mark brainliest
Answer:
90deg
Step-by-step explanation:
If the angles are supplementary, that means mA + mB = 180*
we know that
mA = (2x + 8)deg
mB = (2x + 8)deg = mA
mA + mB = 180deg
mB + mB = 2mB = 180deg
mB = 90deg
Note, that we did not need to compute x even, because the angles were the same.