160-110=50
50/4=12.5
The electrician charges $12.50 per hour, or $50 for 4 hours.
This is not a function for the fact that 1, 2, 3, and 4 all go to the same value.
Given the points (3,6) and (4,8) what is the rate of change?
Answer:
2
Step-by-step explanation:
use slope equation
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°.
Solve 19x - z = y for x.
a) x = (y - z)/19
b) x = y + z - 19
c) x = y/19+Z
d) x = (y + z)/19
Answer:
d
Step-by-step explanation:
S= 2pirh for h i need help pls
Answer: h = -is divided by 2pr
Which equation represents a line with a slope of zero?
O y= 2x
Oy=-1/2x+1/2
Oy=4
O x=-5
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)
Hey! Can u help mi???
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
Write the following expression in radical form:
Answer:
its A!
Step-by-step explanation:
Heyy can u help me????
"ba" = 11,
"ab" = 38,
38 - 11 = 27,
Sooooo... Now you have the value of "ba" and "ab."
Welcome!! <3
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
Can someone help me please
9514 1404 393
Answer:
see attached
Step-by-step explanation:
Translation 12 units down puts each point 12 units lower on the graph than the position where it is currently shown. Segment RS is now shown on the line y=9. It will be translated straight down so it appears on the line y = 9-12 = -3.
Similarly, T has a y-coordinate of 2. Translated down 12, it will have a y-coordinate of y = 2-12 = -10.
The x-coordinates of all of the points remain the same.
The translation is shown in the attachment.
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:
5(x – 2) = 30 what is x
Answer:
-10
Step-by-step explanation:
Answer:
x=8
Step-by-step explanation:
5(x – 2) = 30
Distribute:
5x - 10 =30
Add 10 to both sides:
5x = 40
Divide
x=8
Check your work:
5(8 - 2) =30
5(6) =30
5 * 6=30
30=30!
Final answer: x=8
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
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.
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!!
-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)
Which ratio is equivalent to 7:3
A. 12:8
B. 49:9
C. 28:12
D. 21:7
Answer:
c
Step-by-step explanation:
7:3=28:12
Answer:
C and D
I think
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]
Evaluate f(−1)=−3x^3 + 2x^2
Answer:
5
Step-by-step explanation:
f(-1)= -3(-1)³+2(-1)²
= -3(-1)+2(1)
= 3+2
=5
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
I don't really understand this..please..help..
Answer:
it is b , 1462 dollarrss
Step-by-step explanation:
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
PLSSSSS HELP ME!!!! I WILL MARK!!! U!!!
Question 4
Which of the following sets of numbers represents a function?
(1, 2), (2, -3), (3, - 3), (4,5)
(1, 2), (2, 3), (1,3), (4,5)
(-1,- 1),(4, - 1), (1, - 1), ( – 1, - 2)
(2, - 4), (4, - 1), (2, 4), ( – 4, 1)
Answer:
c
Step-by-step explanation:
because it is
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 :)
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.
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
In a triangle the three angles are x°, 2x° and 3x°
a) Show that 6x = 180 _______________________________________
____________________________________________________________
b) Find the value of x
x = _____°