Answer:
n= -4, 3
Step-by-step explain
n^2 + n = 12
n^2 + n - 12 = 0
n^2 + 4n - 3n - 12 = 0
n(n+4) -3(n+4) = 0
(n-3) (n+4) = 0
n-3 = 0 = n=3
n+4 = 0 = n=-4
3 of 8
The area of a circle is 16.71cm2.
Find the length of the radius rounded to 2 DP.
Answer:
Radius = 2.31 cm
Step-by-step explanation:
Area of circle = 16.71 square centimeters
[tex]\pi r^2 = 16.71 \\3.14r^2=16.71\\r^2=\frac{16.71}{3.14}\\r^2=5.32\\\sqrt{r^2}=\sqrt{5.32}\\r=2.306[/tex]
Radius of circle = 2.31 centimeter
PLEASE HELP ME ON THIS THE ANSWERS ARE 1/3 cm/s, 1/2 cm/s, 2/3 cm/s, and 3/2 cm/s
Answer: 3/2 cm per second
========================================================
Explanation:
We could compute the slope of this line to get the answer, or we could simply compute y/x. This shortcut only works because the line goes through the origin. If the line didn't go through the origin, then we would have to use the slope formula.
The unit rate is y/x = 9/6 = 3/2 cm per second. I used the point (9,6) to compute the unit rate.
We can think of the fraction 3/2 as 1.5, so the unit rate is equivalent to 1.5 cm/sec.
Which rule describes the composition of transformations that maps ΔABC to ΔA"B"C"?
90 degree rotation about point 0 composition reflection across the x-axis
Reflection across the x-axis composition 90 degree rotation about point 0
180 degree rotation about point 0 composition reflection across the x-axis
Reflection across the x-axis composition 180 degree rotation about point 0
Answer:
Option BStep-by-step explanation:
As per the graph the order of transformations is:
1. 90 degree anticlockwise rotation about origin
This maps ABC to A'B'C'2. Reflection across x-axis
This map A'B'C' to A''B''C''Correct option is B (transformations read and applied from right to left)
Answer:
its b
Step-by-step explanation:
hope it helps
HELP PLS PLSSSSS
ASAP
Answer:
9(9d+4)
Step-by-step explanation:
Hope I helped!
The speed, S, of a bicycle varies directly with the number of revolutions per minute, R, that the pedals turn and the number of teeth on the front gear, F, and inversely with the number of teeth on the back gear B.
ANSWERS
Cooling down, Lars pedals 56 rpms. Which equation shows his speed?
S=(56) (52)/ (13) (14)
Cooling down, the speed of the bicycle is
⇒ 16 mph.
Question is incomplete :
The speed, S, of a bicycle varies directly with the number of revolutions per minute, R, that the pedals turn and the number of teeth on the front gear, F, and inversely with the number of teeth on the back gear B.
Lars is racing at 24 miles per hour. His front gear has 52 teeth and a back gear has 14 teeth. He is pedaling 84 revolutions per minute. As he sprints for the finish line, he pedals 112 revolutions per minute. What is his speed?
Answer:
32 mph
Step-by-step explanation:
Speed α number of revolutions α number of teeth on front gear α 1/teeth on back gear
Speed = S ; number of revolutions = R ; Number of teeth on front gear = F ; Number of teeth in back gear = B
S = k(R * F) / B
k = proportionality constant ;
24 = k(84 * 52) / 14
24 * 14 = 4368k
k = 336/4368
k = 0.0769230
Speed at R = 112
S = k(R * F) / B
S = 0.0769230(112 * 52) / 14
S = 447.999552 / 14
S = 31.999968
S = 32 mph
its a aaaaaaaaaaaaaaaaaaaaaaa
plz help me
(a²-b²)²+a²b²
factorise
plzz
Answer:
a^4+b^4−a^2b^2
Step-by-step explanation:
Calculate the perimeter of this shape.
12 cm
18 cm
Answer:
Step-by-step explanation:
P = 2l + 2w
= 2(12) + 2(18)
= 24 + 36 = 60
Week 15
1. Sue wants to solve the following equation:
+5 = 12
What step should she take first?
A Multiply both sides by 6.
B. Subtract 12 by both sides.
C. Subtract 5 by both sides,
D. Add 5 to both sides.
MS7 12-1
Answer:
huh what i dont get it huh lol this is what you get for stealing my points :)
Step-by-step explanation:
Find the 10th term in the
following sequence:
-21, -27, -33, -39,
If QRS is dilated by a scale factor of 6 through the origin, which of the following points represent the coordinates of R?
OA. (-12,-24)
OB. (-24,-12)
OC. (12.24)
OD. (24,12)
Answer:
OD. (24,12) This is the right answer ok
Answer:
oopp
Step-by-step explanation:
ABCDEFGHIJKLMNOPQRSTUVWXYZ HELP
Answer: I'm stuck between C or D
Step-by-step explanation:
I think the answer would be C because 9(5+x) could be the same as 9*5+9*x but i also be D
25,002,000 in scientific notation
Answer:
2.5002 × 10^3 i think, dont quote me on that
Step-by-step explanation:
Which measurement is shorter?
800 centimeters
9 meters
Answer:
800cm.
Step-by-step explanation: 800cm is equal to 8 meters.
Answer:
800 centimeters is shorter.
Step-by-step explanation:
WILL GIVE BRAINLIEST
A line has a slope of 2 and a y-intercept of 9, what is the equation of the line
Answer:
y=2x+9
Step-by-step explanation:
Slope intercept form is y=mx+b
m is the slope (2)
b is the y-intercept (9)
Plug the slope and intercept you were given in and you get the equation of the line in slope intercept form
y=2x+9
what transformation is?
Answer:
incomplete sentence More information At least please?
Question 7(Multiple Choice Worth 1 points)
(05.02 MC)
A standard American Eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. Assuming the weights of standard Eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have?
Approximately 26–34 pounds
Approximately 24–36 pounds
Approximately 28–32 pounds
Approximately 29–31 pounds
Answer: C
Step-by-step explanation: I took the test and got it right
math, science and other stuff to keep my brain in check
Answer:
yes sirr
Step-by-step explanation:
yes sirr
Answer:
yes sirrrrrrrrrrrrrrrrrrrr
please help with question 2! BRAINLIEST to correct answer!!!
Answer:
B: (-infinity, 4]
GIVING BRAINLIST!!!
The point (5, -6) is reflected over the x-axis. The coordinates of reflected point are (_______).
Group of answer choices
(5, 6)
(-5, 6)
(-5, -6)
(5, -6)
The correct answer is (5,-7) Hope that helps!
Answer:
it would be (-5,6)
Step-by-step explanation:
since it is just reflected and not moving anywhere it would just be the same coordinates but flipped values. if its positive then when its reflected it would be negative.
Tires are rotating at a rate of 32 revolutions per minute. Find the angular speed of the tires in radians per minute.
Answer:
201.1 radians per minute
Step-by-step explanation:
The formula for Angular speed of tires in radians per minute =
1 revolutions per minute = 2π rad/min
32 revolutions per minute = x
x = 32 revolutions per minutes × 2 π radians per minute
x = 201.06192983 radians per minute
Approximately
x = 201.1 radians per minute
Therefore, the angular speed of the tires in radians per minute is 201.1 radians per minute
The angular speed of the tires in radians per minute is 201 rad per minute.
Angular speed is the rate at which an object changes it angles, it is measured in radians in a given time.
To convert from rad per minute to rev per minute, we divide by 2π.
1 rad per min = 1/2π rev per min
32 revolutions per minute = (32 * 2π) radians per minute = 201 rad per minute.
The angular speed of the tires in radians per minute is 201 rad per minute.
Find out more on angular speed at: https://brainly.com/question/6860269
how is the following written with only one exponent?
a^3 . a^5
Answer:
The expression 103 is called the exponential expression. ... The exponent applies only to the number that it is next to. ... If −3 is to be the base, it must be written as (−3)4, which means −3 • −3 • −3 ... From row 1 to row 2, the exponential form goes from 105 to 104. ... Following the pattern, you see that 100 is equal to 1.
Step-by-step explanation:
Type the missing number in this sequence:
47, 51, 55, 59, ,
PLEASE HELP
which of the following graphs represents the equation y -2 = 3x-1
Answer:
y=3x+1
Step-by-step explanation:
Compared to last year the population of city had decreased by 15% the population is now 6800 what was the population last year?
Answer:
6800 x ( 100%-15% ) =5780 population
Step-by-step explanation:
Josh pulled cards from a deck 200 times. He pulled a red card 120 times and a black card 80 times. What is the experimental probability that the next card is black? Remember to simplify.
Enter a formula using k to connect the two variables.
F is proportional to a.
Please help
Answer:
Weres The Formula?
Step-by-step explanation:
Answer:
f=ka
Step-by-step explanation:
Brianna used two congruent parallelograms and a square to create the
figure shown.
NIM
ft
ft
Answer:
b
Step-by-step explanation:
A and B are two mutually exclusive events.
P(A) = 0.3 and P(A or B) = 0.7
Work out the value of P(B).
Which is a true statement?
A. 7/4 is a rational number but not a whole number
B. 7/4 is a whole number but not a rational number
C. 7/4 is a whole number and a rational number
D. 7/4 is not a rational number, and is not a whole number
Find the area of the figure.
Answer:
area = 164
Step-by-step explanation:
Divide the square into 2 pictures.
; Square 1 = 5×2 = 10
Square 2 = 14×11 (11 from 16-5 )
so, square 2 = 154
all of area = 154+10 = 164
hope it helps ☺️