help! idk how to do this.
Answer:
The first pic is not clearly so i cannot fully understand it, therefore i cannot solve it so really sorry about that :(
Step-by-step explanation:
Pic 2:
y° = 180° - [180° - 30° - (180° - 110°)] = 100°
Because the 2 lines are parallel so x° + y° = 180°
Therefore, x° = 80°
An employee's salary for Atar services is $37500.Next tear she will get an 8% increase in salary. How much is her new salary. Plz help me its due in an hour and I will mark your answer as the brainliest.
3 ( x - 4 ) - 1 6 = 2 ( x - 8 ) + 6
Answer:
18
Step-by-step explanation:
3 (x - 4) - 16 = 2 (x - 8 ) + 6
=> 3x - 12 -16 = 2x - 16 + 6
=> 3x - 28 = 2x - 10
=> 3x - 28 - 2x = -10
=> x = 18
Answer:
18
Step-by-step explanation:
3(x - 4) - 16 = 2(x - 8) + 6
(3x - 12) - 16 = (2x - 16) + 6 (multiply 3 with (x-4) , and 2 with (x-8))
3x - 28 = 2x - 10 (subtract the numbers,remember only the same qualities)(meaning we leave out 3x and 2x)
3x - 2x = -10 + 28 (move 2x to the left(becomes negative(minus)) and move -28 to the right(becomes positive)(do your calculations)
x = 18 (final answer)
Write the equation of the line that is perpendicular to the graph of y=2x-3, and
whose y-intercept is -8.
Answer:
y= =1/2x-8
Step-by-step explanation:
If
[tex] \cos(330°) = \frac{ \sqrt{3} }{2} [/tex]
Then prove that:
[tex] \cos(165°) = - \frac{ \sqrt{3} + 1}{2 \sqrt{2} } [/tex]
Please help me!
Answer: see proof below
Step-by-step explanation:
Given: cos 330 = [tex]\frac{\sqrt3}{2}[/tex]
Use the Double-Angle Identity: cos 2A = 2 cos² A - 1
[tex]\text{Scratchwork:}\quad \bigg(\dfrac{\sqrt3 + 2}{2\sqrt2}\bigg)^2 = \dfrac{2\sqrt3 + 4}{8}[/tex]
Proof LHS → RHS:
LHS cos 165
Double-Angle: cos (2 · 165) = 2 cos² 165 - 1
⇒ cos 330 = 2 cos² 165 - 1
⇒ 2 cos² 165 = cos 330 + 1
Given: [tex]2 \cos^2 165 = \dfrac{\sqrt3}{2} + 1[/tex]
[tex]\rightarrow 2 \cos^2 165 = \dfrac{\sqrt3}{2} + \dfrac{2}{2}[/tex]
Divide by 2: [tex]\cos^2 165 = \dfrac{\sqrt3+2}{4}[/tex]
[tex]\rightarrow \cos^2 165 = \bigg(\dfrac{2}{2}\bigg)\dfrac{\sqrt3+2}{4}[/tex]
[tex]\rightarrow \cos^2 165 = \dfrac{2\sqrt3+4}{8}[/tex]
Square root: [tex]\sqrt{\cos^2 165} = \sqrt{\dfrac{4+2\sqrt3}{8}}[/tex]
Scratchwork: [tex]\cos^2 165 = \bigg(\dfrac{\sqrt3+1}{2\sqrt2}\bigg)^2[/tex]
[tex]\rightarrow \cos 165 = \pm \dfrac{\sqrt3+1}{2\sqrt2}[/tex]
Since cos 165 is in the 2nd Quadrant, the sign is NEGATIVE
[tex]\rightarrow \cos 165 = - \dfrac{\sqrt3+1}{2\sqrt2}[/tex]
LHS = RHS [tex]\checkmark[/tex]
What are the coordinates of point Q?
(3, 0)
(0, -3)
(-3, 0)
(0, 3)
Answer:
(0, -3)
Step-by-step explanation:
Coordinates are set up like this: (x, y)
You move none across on the x plane, so (0,y).
You move 3 down on the y plane, so (0, -3).
Hope this helps!
Answer:
B. (0,-3)
Step-by-step explanation:
If you were to do coordinates you would always start with the x-axis then the y-axis. So in this case 0 = X-axis and -3 = Y-axis. If you had a harder problem then there would also be a Z-axis. Hope this helps have a good day :D
Renee had a box of cupcakes, of which she gave 1/2 to her friend Juan. Juan gave 3/4 of his share to his friend Elena. What fractional part of the original box of cupcakes did Elena get?
Answer:
3/8
Step-by-step explanation:
There are 8 cupcakes. Juan gets 4 and there are 4 left. Elena gets 3 out of the 4 that are left. Since there were 8 she got 3 out of the total (8) cupcakes. I used those specific number because that is the most simplified numbers.
Giving brainly for correct answer!!! 30 Points
Lines 8 and T are parallel. Find value of X
There are multiple answers!!
A 130
B 50
C 90
D 140
Answer:
The answer is B.
Step-by-step explanation:
Given that vertically opposite angles are the same so the inner angle of the triangle is 40°.
Next, you have to find the other angle of the triangle. Assuming that total angles in a triangle is 180° so you have to subtract :
180° - 40° - 90° = 50°
So the value of x is 50°.
.Mai and Noah each leave their houses at ther same time and ride their bikes to the park. Using information
from the data card provided, choose the equation for Noah that relates the time in minutes (t) to the distance in meters they travel
Answer:
Let's define the zero in our axis as the park.
We know that Noah lives 9,000 meters away from the park, and that he bikes 300 meters per minute.
Then at the beginning, the position of Noah with respect to the park can be written as:
P(0s) = -9000m
This means that initially he is 9000m away from the park.
Now, each minute he moves 300 meters to the park, then after t minutes, the position is:
P(t) = -9000m + (300m/min)*t
With this equation we can find the time that takes Noah to arrive at the park:
When his position is equal to zero, it means that he is in the park (because we defined the position zero as the park).
P(t) = 0m = -9000m + (300m/min)*t
Now we can solve this for t.
9000m = (300m/min)*t
9000m/((300m/min) = t = 30 minutes.
Answer:
Noah arrived first.
Step-by-step explanation:
Noah thirty minutes and Mei 32
Colleen decides to go bowling. She has a total of $30 to spend. The cost per game is $4, plus shoe rental which is $6. What is the equation? How many games can Colleen bowl?
Answer:
4x+6=30
Step-by-step explanation:
30-6=24
4*6=24
6 games, assuming shoe rental only has to be paid one time.
Which equation represents a line with a slope of zero?
O y= 2x
Oy=-1/2x+1/2
Oy=4
O x=-5
All of the following have the same value except.
O 9+ (-6)
0-6 - (-9)
O 6-9
O9-6
Answer:
C, 6-9
Step-by-step explanation:
All of the other answers equal 3 but C is equal to -3
Answer:
6-9
Step-by-step explanation:
9-6=3
9 + (-6) ---> 9-6=3
-6-(-9) --->-6+9=3 (Negative and negative turn to positive
6-9=-3
So, the answer is the last one
What is the length of leg s of the triangle below?
Answer:
What is the length of leg s of the triangle below?
B. atau F
Answer:
4
Step-by-step explanation:
What is the slope of a line that is perpendicular to the line y=-3x+5?
A.-2
B.-1/2
C.1/2
D.2
Answer:
C. 1/2Step-by-step explanation:
Note: there is a typo in the question, the line should be y = - 2x + 5
Perpendicular lines have negative reciprocal slopes
Slope of the given line is:
-2The slope of a perpendicular line is:
- 1/(-2) = 1/2Correct choice is C. 1/2
m=−3
The equation of a perpendicular line to y=−3x+5
must have a slope that is the negative reciprocal of the original slope.
m perpendicular =−1/−3
Simplify the result.
m perpendicular =1/3
Hope this helps
5. A cargo plane weighed 500,000 pounds. After the first load was taken off, the airplane weighed 437,981
pounds. Then 16,478 more pounds were taken off. What was the total number of pounds of cargo
removed from the plane? Is your answer reasonable? Explain.
Answer:
A total of 78,497 pounds of cargo was removed from the plane.
Step-by-step explanation:
I got my answer by subtracting 437,981 from 500,000 to get 62,019. After, I added the additional 16,478 pounds that were taken off after to get my total of 78,497. My answer is reasonable because after double-checking with my calculator, I noticed I did not make any mistakes and my answer checked out, therefore validifying my answer. Hope this helps and have a good rest of your day/ night :)
Solve the inequality
7.2>0.9(n+8.6)
Answer:
n<-[tex]\frac{3}{5}[/tex] Hope this helped! Have a great day!
Step-by-step explanation:
Directions: Find the value of x.
104
(9x - 25)
Answer:
x = 7
Step-by-step explanation:
Since the two sides (9x - 25) of the triangle are congruent to each other, we can add them together
(9x - 25) + (9x - 25)
18x - 50
A triangle is 180 degrees when adding all three sides
So if 2 sides together equal 18x - 50 and the last side equals 104, then they should equal 180 total
18x - 50 + 104 = 180
Combine like terms
18x + 54 = 180
Subtract both sides by 54 to isolate the variable
18x + 54 - 54 = 180 - 54
18x = 126
Divide both sides by 18 to isolate the variable
18x ÷ 18 = 126 ÷ 18
x = 7
Check your work by plugging in the x value for the expression and adding all three sides to equal 180 degrees
9(7) - 25 + 9(7) - 25 + 104 = 180
Pemdas says to multiply first
63 - 25 + 63 - 25 + 104 = 180
38 + 38 + 104 = 180
76 + 104 = 180
180 = 180
The work is correct
Which table has a constant of proportionality between y and 2 of 12?
Choose 1 answer:
Answer:
its table A
Step-by-step explanation:
i just did this question on khan and the answer is table A
Write the following expression in radical form:
Answer:
its A!
Step-by-step explanation:
y - 3 = 2 (x + 4).
Answer:
Step-by-step explanation:
Answer:
y = 2x+7
Step-by-step explanation:
y - 3 = 2x+4
y = 2x+4+3
y = 2x+7
Somebody who remembers this plz answer ALL of the questions correctly!
(Will mark as brainliest)
Thanks :D
Answer:
Step-by-step explanation:
13: 6 3/5
14: 2 1/4
15: 3 2/3
16: 3 5/6
17: 1 5/8
18: 5 2/9
19: 8 1/2
20: 2 1/7
21: 7 4/5
Does anyone know the answer to this I need this ASAP
Answer:
(-32, 0)
Step-by-step explanation:
The x-intercept is the point on the line whose y-coordinate is zero.
Look at the points (8, 28) and (-2, 21).
As y goes from 28 to 21, a difference of 7, x goes from 8 to -2, a difference of 10.
Now look at the points (-2, 21) and (12, 14).
As y goes from 21 to 14, a difference of 7, x goes from -2 to -12, a difference of 10.
As you can see, each time y goes down by 7, x goes down by 10.
Start with (-12, 14).
Subtract 7 from y and 10 from x to get (-22, 7).
Now start with (-22, 7). Subtract again 7 from y and 10 from x.
You get (-32, 0).
Since now you have a y-coordinate of 0, point (-32, 0) is the x-intercept.
Answer: (-32, 0)
The area of a square garden is A=121 ft2. How long is each side of the garden?
Who knows this needed quick???
Answer: 6 gallons
Step-by-step explanation:
144/24=6
Hey! Can u help mi???
Please help is Geometry.
Somebody who remembers this plz answer ALL the questions correctly!
(Will mark as brainliest)
Thanks!
(Ignore the erased numbers) I didn’t know whaat I was doing lol
Answer:
Step-by-step explanation:
22: 7/5
23: 15/4
24: 21/8
25: 9/2
26: 16/3
27: 13/7
28: 25/4
29: 32/9
30: 32/3
-7x + 6= 27 what does x stand for ?
-7x + 6 = 27
-7x = 21 (Subtract 6 from both sides)
x = -3 (Divide -7 from both sides)
S= 2pirh for h i need help pls
Answer: h = -is divided by 2pr
What is the value of 54 + (48 + 72) X? 2/3
A. 116
B. 134
C.150
D. 152
Answer:
B. 134
Could you mark me as brainliest?
THANKS!!