1. Two lines cut by a transversal line are parallel when the corresponding angles are equal.
2. Two lines cut by a transversal line are parallel when the alternate interior angles are equal.
I need help with the first few, the others I have already done. Pls help I'm almost failing
Answer:
Step-by-step explanation:
15. (x + 6)(x + 1)
16. (m - 19)(m + 2)
17. (y - 8)(y - 2)
18. (p + 12)(p - 3)
19. (c - 15)(c + 3)
20. (w - 8)^2
21. (a + 15)(a - 2)
22. (x - 30)(x + 3)
23. 3(5r - 4)(5r + 4)
24. 5(3x - 1)(3x + 1)
25. mn(m - n)(m + n)
26. 6a(a - 2b)(a + 2b)
27. 3(x + 8)(x - 3)
28. 2(m - 1)^2
29. x(x + 13)(x - 4)
30. 4y(y + 6)(y - 5)
I give brainlyiest or however you spell it lol. And PLZ HELP ME
Answer:
brainliest also gimmie a sec to figure it out
Step-by-step explanation:
Answer:
Put 2 dots in the spot above 9 by clicking on the space above the numbers. Put 3 above 10. Put 2 above 11. Put 2 above 12.
solve -2(x + 4) + 9 < -11 then graph.
Answer:
-2x-8+9<-11
-2x+1<-11
-2x<-11-1
-2x<-12
divide both sides by -2
x>6
A mass weighing 9 lb stretches a spring 1.5 in. The mass is displaced 5 inch in the downward direction from its equilibrium position and released with no initial velocity. Assuming that there is no damping, and that the mass is acted on by an external force of 5 cos(6t) lb, solve the initial value problem describing the motion of the mass. For this problem, please remember to use English units: ft, lb, sec.
Answer:
[tex]9u" + 2304u = 160cos(6t)[/tex]
[tex]u(0) = \frac{5}{12}ft[/tex] and [tex]u'(0) =0[/tex]
Step-by-step explanation:
Given
[tex]w =9lb[/tex] --- weight
[tex]L = 1.5in[/tex] --- stretch
[tex]u(0) =5in[/tex] --- initial position
[tex]u'(0) =0[/tex] --- initial velocity
[tex]\gamma =0\ lbs/ft[/tex] --- no damping
[tex]F(t) = 5cos(6t)\ lb[/tex] -- External force
Required
Solve the initial value problem
The initial value problem is calculated using:
[tex]mu" + ku = F(t)[/tex]
First, convert all lengths to ft
[tex]L = 1.5in[/tex]
[tex]L = \frac{1.5}{12}ft[/tex]
[tex]L = \frac{1}{8}ft[/tex]
[tex]u(0) =5in[/tex]
[tex]u(0) = \frac{5}{12}ft[/tex]
Weight is calculated as:
[tex]w = mg[/tex] and [tex]w = kL[/tex]
Where
[tex]g = 32fts^{-1}[/tex]
Make m the subject in [tex]w = mg[/tex]
[tex]m = \frac{w}{g}[/tex]
[tex]m = \frac{9}{32}[/tex]
Make k the subject in [tex]w = kL[/tex]
[tex]k = \frac{w}{L}[/tex]
[tex]k = \frac{9}{1/8}[/tex]
[tex]k = 72[/tex]
Recall that: [tex]mu" + ku = F(t)[/tex]
[tex]\frac{9}{32}u" + 72u = 5cos(6t)[/tex]
Multiply through by 32
[tex]9u" + 2304u = 160cos(6t)[/tex]
[tex]u(0) = \frac{5}{12}ft[/tex] and [tex]u'(0) =0[/tex]
Please solve for X.
52–r= 5-42
Answer:
-89
Step-by-step explanation:
A high speed train can travel 750 miles in 5 hours. Find the unit rate in miles per hour.
Answer:
150 miles per hour
Step-by-step explanation:
750 divided by 5 is 150
What is the measure of AC? Thanks!!
Answer:
arc AC = 21 degrees
Step-by-step explanation:
2(3x-1.5) = 3x+9
6x-3 = 3x+9
3x = 12
x = 4
arc AC = 3(4) + 9 = 21
An account with an initial balance of $4000 earns 6.5% interest for 5 years.
What is the ending balance?
Enter your answer in the box.
The ending balance is $5,480.
Given that,
The initial balance is $4,000.The rate of interest is 6.5%.And, the time period is 5 years.Based on the above information, the calculation is as follows:
[tex]= \$4,000 \times (1 + 0.065)^5[/tex]
= $5,480
Therefore, the ending balance is $5,480.
Learn more: brainly.com/question/16115373
Answer: Hi, the ending balance is 5,300
Step-by-step explanation:
I took the test and got an 100. Hope this helps!
Which of the following is an advantage of using stratified random sampling?
A-Stratified random sampling saves time and money.
B-Stratified random sampling requires knowledge of the entire population.
C-Stratified random sampling can be used even when there is not a list of the population
D-Stratified random sampling provides more precise estimates than simple random sampling.
Answer:
A - Stratified random sampling reduces sampling variability.
Step-by-step explanation:
saw it on the review
One day of the week is selected at random. To the nearest tenth of percent, what is the probability that the chosen day is Saturday A: 28.5 B: 50.0 C: 14.3 D: 85.7
Answer:
C
Step-by-step explanation:
=1/7 X 100
=14.3
I hope this helps a bit
Problem 2
Label the diagrams that show these two methods for calculating 19x50
y = -(x - 5) write the equation in slope-intercept form.
Answer:
y=-x+5
Step-by-step explanation:
Graph the linear equation ax +by = c, where a = 0, b = 1, and c = 1.5.
Step-by-step explanation:
ax +by = c
0(x) + 1(y) = 1.5
Answer:
ax +by = c,
by substituting value
0×x+1×y=1.5
y=1.5
Is the relation shown in the arrow diagram a function? Explain.
Answer:
D, no the input 3 has 2 outputs
Step-by-step explanation:
Something can be described as a function if there is only 1 of each number in the input or x.
Multiply (-6 + i)(-2 + 9i).
a 45 - 130i
b 95 - 52i
c 3 - 56i
d 120 - 21i
e None of the above
anyone wanna be friends cause im boreeed
Answer:
b
Step-by-step explanation:
go with that and you may win at this multiply question
Answer:
C) 3-56i
Step-by-step explanation:
I can be friends
Which statement best describes the effect on an image when it is reflected over the x-axis?
A The image will reflect left or right, and the x-value will become Its opposite.
B The Image will reflect left or right, and the y-value will become Its opposite.
C The image will reflect up or down, and the x-value will become its opposite.
D The image will reflect up or down, and the y-value will become its opposite.
#6
A
Answer:
D. The image will reflect up or down, and the y-value will become it's opposite
Joanna is reading a storybook. The ratio of the number of pages she read to
the pages that remain to be read is 7:3. If the book contains 500 pages in all,
how many pages did Joanna read and how many pages remain to be read?
Answer:
The amount of pages that remain to be read is 150 pages
Step-by-step explanation:
Okay if we know it's in 7:3 ratio we can easily add them both to get 10, then divide 10 by 500 to get 50. SO we now know that 50 is 1 unit and since the ratio says 3 units is the answer, we multiply 50 by 3 to get 150.
1/2r-8=5 solve for r
Step-by-step explanation:
r-16=10
r=10+16
r=26
I hope this helps.
Answer:
r = 26
Step-by-step explanation:
What expression is eqivalent to 3 x + 2 (x - 1) -4? Answer
Answer:
The answer is 5x - 6
Pls mark as brainliest
maybe 5x -6
3 x + 2 (x - 1) -4
= 3x + 2x - 2 - 4
= 5x - 6
Can someone please help? f(x) = |x − 2| − 4 and g(x) = 1/2x − 2 solve algebraically for x.
Answer:
x = 8, x = 0 intercepts: (8,2) (0,-2)
Step-by-step explanation:
|x − 2| is a positive value, x can be x ≥ 2 or x ≤ 2
when x≥2, then
y = x-2-4 =x-6 and y = 1/2x - 2
x-6 = 1/2x-2
1/2x=4
x = 8
When x≤2
y = -(x-2)-4 = -x - 2
y = 1/2x - 2
-x - 2 = 1/2x - 2
x = 0
The sum of two numbers is 23. Twice one number increased by 6 is the same as 4 times the other number decreased by 2. What is the largest of the two numbers?
Answer:
One number is 4.2, the other is 18.8
Step-by-step explanation:
1.) x+y=23
(x+6y)x2=4
2.) (x+6y)x2=4 = 2x+12y=4
3.)Use elimination/substitution to solve
2x+12y=4 = x+6y=2 = x=2-6y
2-6y+y=23
4.)Solve for y
2-5y=23 -> -5y=21 -> y=4.2.
5.)Solve for x
x+4.2=23
x=18.8
I may be wrong so let me know if I am
find the area of the triangle:
Answer:
its 105
Step-by-step explanation:
An airplane is flying overhead at a constant elevation of 405 ft. A person is viewing the plane from a position 3040 ft from the base of a radio tower. The airplane is flying horizontally away from the person. If the plane is flying at the rate of 640 ft/s, at what rate is the distance between the person and the plane increasing when the plane passes over the radio tower? At the moment the plane passes over the tower, the distance between the person and plane is changing at a rate of ________ft/s
Answer:
δL/δt = 634,38 ft/s
Step-by-step explanation:
A right triangle is shaped by ( y = distance between aircraft and ground which is constant and equal to 405 f ) a person who is at ground level 3040 f away from the tower distance x = 3040 f and the line between the aircraft and the person. Then we can use Pythagoras theorem and write
L ( distance between aircraft and person )
L² = x² + y² or L² = x² + (405)²
Taken partial derivatives with respect to t we get:
2*L*δL/δt = 2*x*δx/t + 0
Then L*δL/δt = x*δx/dt
At the moment of the aircraft passing over the tower
x = 3040 ft δx/δt = 640 ft/s and L = √ ( 3040)² + (405)²
So L = √9241600 + 164025 L = √9405625 L ≈3066,9 ft
Then:
δL/δt = 3040*640/ 3066,9 units [ ft * ft/s / ft ] ft/s
δL/δt = 634,38 ft/s
A mirror is shaped like a parabolic curve with a width of 3 inches when the depth is 0.375 inches. Which equation
can be used to model the shape of the mirror?
Answer: it's A
Step-by-step explanation:
y= 1/6x^2
i sacrificed my grade for u lol :/
3 ratios that are equivalent to 5 : 2
Answer:
10:4 15:6 20:8
Step-by-step explanation:
Help
Find x. Round to the nearest tenth.
27
26.2
Answer:
14.0°
Step-by-step explanation:
Reference angle = x
Hypotenuse = 27
Adjacent = 26.2
Apply trigonometric function, CAH:
Cos x = Adj/Hyp
Cos x = 26.2/27
Cos x = 0.97037037
x = Cos^{-1}(0.97037037)
x = 13.9823107°
x = 14.0° (nearest tenth)
Given: f(x) = 8x4 + 2x3 – x + 3 and g(x) = -5x3 + 7x + 2
Simplify: f(x) + g(x)
Answer:
Step-by-step explanation:
[tex]8x^4+2x^3-x+3-5x^3+7x+2\\ \\ 8x^4-3x^3+6x+5[/tex]
Suppose that there are 630 seats in a row. If the person to be seated is needed to sit next to someone, then what is the fewest number of seats that need to be occupied?
Answer:
Its 210
Step-by-step explanation:
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
-5x + 26 = -44
Answer:
14
Step-by-step explanation:
-5x+26=-44
-26 -26
-5x=-70
5 5
x=14
Answer:
x=14
Step-by-step explanation:
Let's solve your equation step-by-step.
−5x+26=−44
Step 1: Subtract 26 from both sides.
−5x+26−26=−44−26
−5x=−70
Step 2: Divide both sides by -5.
−5x−5=−70−5x=14
Answer:
x=14
NEED HELP please!! 30 points!!!
Answer: What are you asking ?
Step-by-step explanation: