A plumbing contractor charges a fee of $100 a visit and an additional charge of $50 per hour. Which equation can be used to find the number of hours x he worked if he gets paid $950 for a day's work?
Answer:
100 + 50x = 950
100 - 100 + 50x = 950 - 100
50x = 850
50x/50 = 850/50
x = 17
if one zero of the following polynomial 8x^2-13x-4k is the reciprocal of the other, then find k
Answer:
k = -2
Step-by-step explanation:
2 way to solve:
1st: 8x²-13x-4k = 8(x²-(13/8)x-(k/2))
if 2 roots: a and 1/a
8(x-a)(x-1/a) = 8(x²-(13/8)x-(k/2))
x²-(a+1/a)x+1 = x²-(13/8)x-(k/2)
1 = -(k/2)
k = -2
2nd: 2 roots of 8x²-13x-4k x=(-b±√b²-4ac)/2a
x = (13±√169-4*8*(-4k))/16 = (13±√169+128k)/16
(13+(√169+128k))/16 = 16/ (13-(√169+128k)) ... root1=1/root2
(13+(√169+128k))*(13-(√169+128k)) = 16*16
13² - (√169+128k)² = 256
169-169-128k = 256
-128k = 256
k = -2
Can someone please help me with math.
Answer:
D. (8,1)
Step-by-step explanation:
hope this helps :)
The figure is made up of a cylinder and 2 cones. What is the volume of the composite figure? Use 3.14 for Pi. Round to the nearest hundredth.
A cylinder and 2 cones. All have a radius of 2 millimeters. The cones have heights of 4 millimeters and 2 millimeters, and the cylinder has a height of 5 millimeters.
Recall the formulas V = B h and V = one-third B h
Answer:
87.92
Step-by-step explanation:
I took the unit test review in edge 2021
I will give BRAINLEST TO WHO ANSWER !!!!!
Answer:
a=7 b=24 c=25
Step-by-step explanation:
Leg a=7
Leg b=24
According to Pythagorean theorem: a^2+b^2=c^2
49+576=c^2
C^2=625
c=25
Answer:
Step-by-step explanation:
This is a right triangle, so we may apply the Pythagorean Theorem. The two leg lengths are 7 and 24 respectively, and so the length of the hypotenuse is
√(7² + 24²) = 25
help pls. it’s from khan academy
Please help me out with this please and thank you
No links no stealing points
Answer:
A
5/2 for line 1
5/2 for line 2
5/2 for line 3
B they are all parallel because the have equal slope
Step-by-step explanation:
explanation is in the image
that's all...have fun
please help!! due today. will give brainiest.
Answer:
7m + 6
3y+7
15m+9r
4+4k
20+2g
2j+r+h
-2C+8c+12r
9s+4m
Step-by-step explanation:
Hope this helps ;)
good luck .
what is (-5) × (+5) its about intergers! :)
Answer:
= -25
Step-by-step explanation:
The figure is made up of a square and a rectangle. How much longer is side FE than A F?
A. 1 foot
B. 2 feet
C. 9 feet
D. 11 feet
Answer:
2
Step-by-step explanation:
A F = 48
F E = 50
50 - 48 = 2
Thus the answer is 2
calculate the surface area of the following cylinders
Answer:
~1445.13
Step-by-step explanation:
A = 2 x pi x r + 2 x pi x r^2
Answer:
260π or id we take π=3.14 816.4
Step-by-step explanation:
h=13ft
r=10ft
A=2πr(h+r)=2*10*13*π=260π=816.4
Please help me. PLEASE
Answer:
Part A: (3, 2)
Part B: 5
Step-by-step explanation:
Point B of the parallelogram is the top right dot on the graph. In order to find its coordinate, we simply trace the dot's trajectory back to the x and y axis accordingly. If we look under the dot we see that its x-axis is 3 and if we look to the left of the dot we see that its y-axis is 2. Therefore, the coordinate of the fourth vertex B is (3, 2)
To calculate the length of side AB we simply count the number of squares between them, which looking at the graph we can see is 5 squares. Therefore the length of AB is 5
the spinner below is spun.What is the probability of spinning
WHO HAS THE ANSWER!! I DONT GET IT. PLEASE COMMENT THE ANSWER ON MY POST
Seth can paint one picture in 2 1/2 hours. How many pictures can he paint in 17 1/2 hours?
A. 6
B. 7
C. 8
D. 9
Answer:
7
Step-by-step explanation:
17 times 60 is 1020
1020 plus 30 is 1050
2 times 60 is 120
120 plus 30 is 150
1050 divided by 150 is 7
Answer:
B.7
Step-by-step explanation:
17.5 divided by 2.5 is 7
Find the value of x
48°
132°
132°
X°
Answer:
X°
Step-by-step explanation:
there’s no other clues to what it could be, and since it’s x it would be X°
What is the lateral surface of the triangular prism?
Answer:
5
Step-by-step explanation:
the price of a phone on sale was increased from $80 to $120. By what percentage was the price of the phone increased?
Answer:
50% increase
Step-by-step explanation:
120 - 80 = 40
40 = 50% of 80
Answer:
50%
Step-by-step explanation:
120 / 80 = 1.5
1.5 x 100 = 150%
150% - 100% = 50%
Mrs, O'Neil has 2 times as many markers as colored pencils. The total number of markers and colored pencils is 18. How many markers does Mrs. O'Neil have?
HELP ME!!! 20 points!!
A teacher randomly selects students to write the date on the board each day. If there are
12
boys and
9
girls in the teacher’s class, what is the probability the teacher chooses a girl to write the date on the board?
Answer:
75%
Step-by-step explanation:
9 divided by 12 = 0.75
- 75%
can I get help with the answer
Answer:
12 never mind it is 72
Step-by-step explanation:
6x6=36
36x2=72
Answer:
6 x 6
Step-by-step explanation:
because when You multiply x2 is by the same number
so it's 6 x6 = 36
what is x⁸ + x² bro this looks easy but I don't understand
Answer:
The sum is;
x⁸ + x²
Step-by-step explanation:
Here, we want to add two polynomials
To add, we check the power of both values in the expression
As we can see, the power is not the same
What this mean is that we can not add the two terms beyond this written expression
So we have the value of the polynomial expression as still being the same
Is -2/3(-12b-6+9b-18) equivalent to 2(b+8)? Show your work.
please help.
Answer:
Step-by-step explanation:
-2/3(-3b-24) = 2(b+8)
6b/3+48/3 = 2b+16
2b+16 = 2b+16 => equivalent
Is -2/3(-12b-6+9b-18) equivalent to 2(b+8)?
To find out, simplify the left side.
Multiply every term in the parentheses by 2/3.
(8b + 4 - 6b + 12)
Simplify.
(2b + 16)
Factor out 2.
2(b + 8)
We conclude that -2/3(-12b-6+9b-18)
equals 2(b + 8).
what is ( 9 x 2/3 ) x 2/3
Answer: The answer is 4
How much do i save when i use a 30% off coupon on a $175 purchase
Answer: In this example, if you buy an item at $175 with 30% discount, you will pay 175 - 52.5 = 122.5 dollars.
Step-by-step explanation:
could 10.3cm 4.4cm and 8.3 cm be the side lengths of a triangle yes or no
Answer:
No
Step-by-step explanation:
As you probably know, triangles have 3 sides. The longest side is called the hypotenuse. In this case, the hypotenuse is 10.3. Now, you might or might not know the pythagorean theorem, which states that the a² + b² =c ².
In this case, we can say that 4.4 is a and 8.3 is b. Now if we square 4.4 and add it to 8.3 squared, we get 88.25. However, if you square 10.3, you get 106.09. Thus, the values cannot be this way. So, your answer is no.
Help help help help help help help help
Answer:
87,069.6
Step-by-step explanation:
Which expression has a value of 15 when n = 7?
A.43-5n
B.3n-5
C.6n-28
D.19- 28/n
Answer:
The answer is D.
Step-by-step explanation:
28/7 = 4 and 19-4 = 15.
.............................................................
Answer:
0.058863
Step-by-step explanation:
PLSS HELP THE TEACHER IS ASKING FOR MY ANSWERS CUZ I WAS SUPPOSED TO DO IT AND I NEVER WAS PREPARED PLSSS HELP IM NEXT PLS DRAW IT FOR MEE :( EVEN IF ITS EDITED I WOULD APPRECIATE TYSM HAVE A GOOD DAY!
Answer: what?
Step-by-step explanation:
I don’t know
Answer:
Just multiple each fraction by 2 on the denominator and numerator.
For the drawing part, all you have to do is draw lines until you get the number of the denominator.
Step-by-step explanation:
For. Example, 2/4 times 2 equals 4/8
So for this u would draw lines till you count that there are 8 lines.
I hope this helped you.
Have a nice day.