Addition and multiplication are associative for rational numbers. Subtraction and division are not associative for rational numbers.
Answer:
Yes
Step-by-step explanation:
Work out the answers of the following:
1) −2 - 7 + 4=
2)−20 + 11 − 6=
3)−5 + 14 − 8=
4)−13 − 4 + 6=
5)−30 − 80 + 40=
HELPPP PLEEEAAAASSSSEEE!!!! :(
Answer:
1)-5
2)-15
3)1
4)-11
5)-70
if negative use () for example
(-2)-7+4
Answer:
1. -5
2. - 15
3. 1
4. - 11
5. -70
A child is flying a kite. If the string is pulled tight to its full length of 40 feet and is held at an angle of 71 degrees above the ground, how high is the kite? Round your answer to the nearest whole foot.
Answer:
38feet high
Step-by-step explanation:
Given the following
Length of the string = 40feet (hypotenuse)
Angle of elevation = 71 degrees
Required
Height of the kite (opposite)
Using the SOH CAH TOA identity
Sin theta = opp/hyp
Sin 71 = H/40
H = 40sin 71
H = 40(0.9455)
H = 37.82
Hence the kite is 38feet high (to the nearest whole number)
Please help me asap i need help quickly
Step-by-step explanation:
Volume of cuboid is length* breadth" height
Volume of cuboid is length* breadth" height=10*8*6= 480cm³
volume of traingular prism= this I don't know
okay wait...imagine there is other half of the traingle such that it becomes cuboid...now find area of cuboid = 5*5*4= 100
now divide by 2 to get half volume ( one triangular prism)
which is 100/2= 50
Volume of traingular prism= 50cm³
Total volume of figure= 480+50= 530cm³
Given that f(x) = 3x + 5, find f(x + 2)
Answer:
f(x)=3x+5
f(x+2)=3(x+2)+5
=3x+6+5
=3x+11
Escribe la ecuación que describe esta situacion. Utilice ^para exponentes.Se colocan 4500 dolares en una cuenta con una taza de anuel del 5,5%. Cuanto habra el la cuenta despues de 8 años?
Answer:
describe esta situacion.
Step-by-step explanation:
x+7=15
help me fasttttttt
Answer:
x=8
Step-by-step explanation:
x+7=15
-7 -7
x=8
Mark me Brainliest?
Answer:
Its 8
Step-by-step explanation:
x+7=15
Subtract 7 from both sides.
x=8
PLS HELP NO LINKS. Assume that RQ and RS tangent to circle T. solve for x.
Answer:
x = 6
Step-by-step explanation:
Here, we want to solve for the value of x
mathematically, tangents drawn from the same point to touch two points on a circle, are the same distance from the external point
thus;
QR = RS
Thus;
3x + 8 = 26
3x = 26-8
3x = 18
x = 18/3
x = 6
i need help im a bit slow
Answer:
pretty sure its D
Step-by-step explanation:
A is definetly at 1 in weight (ounces), and definetly at 0.25 at cost.
Answer:
The answer is D
Step-by-step explanation:
If 2 is 50 cents, then 1 is 25 cents
(sorry i just wanted points <33)
Please help ASAP!!!!
Answer: so first the first question the answer will be. 16 whole." and the second one will be 1/45. " hope this help
Step-by-step explanation:
10
pounds. How
Eliza's backpack weighs 18 pounds with her math book in it. Without her math book, her backpack weighs
14
much does Eliza's math book weigh?
Answer:
4 lb
Step-by-step explanation:
Subtracting 4 lb from 18 lb yields 14 lb, the weight of the backpack without math book: 18 lb - 4 lb = 14 lb
The math book weighs 4 lb.
Can someone message me I need help ASAP by tmr
PLEASE HELP ME ASAP!
Answer:
B
Step-by-step explanation:
because its collecting the data, asking the 6th graders how they get to school
what is 50 + 9 - 6 equals
Answer:
53
Step-by-step explanation:
Answer:
53 is the answer.
Step-by-step explanation:
50 + 9 - 6
= 59 - 6
= 53
I NEED HELP ASAP PLEASE
Answer:
[tex]P = \frac{A}{1 + rt}[/tex]
Step-by-step explanation:
We can simply divide both sides of the equation by (1 + rt) and we get the answer.
Which of the following is the equation of a line in slope-intercept form for a
line with slope = 1 and y-intercept at (0,-1)?
please help
the product of 2 consecutive integers is 42. find the integers
Answer:
6 & 7
Step-by-step explanation:
6 x 7 = 42
They are consecutive!
Answer:
6x7
Step-by-step explanation:
hope this helps!
Please helppp answer quick
A carpenter lays 18 square feet of tile in 2/3 of an hour. How many square feet of tile does the carpenter lay per hour?
Answer:
x=24
Step-by-step explanation:
there are different ways to solve the problem
set up a proportion:
16/(2/3)=x/1
cross multiply
(2/3)x=16
(3/2)(2/3)x=(3/2)(16)
x=24 square feet per hour
a carpenter lays 16 square feet in 40 minutes (2/3 of an hour)
this means he lays 4 square feet every 10 minutes
8 square feet in 20 minutes
12 square feet in 30 minutes
24 square feet in 60 minutes
Find the area of a regular hexagon with apothem 15. The answer should be 18 square root 3 but I don’t know how to get there.
Answer:
36 because you got to add
Find the measure of the angle indicated (x). Round to the nearest tenth. Show your work to support your answer.
Answer:
solution:
relation between perpendicular and base is given by tan angle
so
[tex] \tan(ø) [/tex]=perpendicular/base=4/13
ø=tan-¹ (4/13)=17.10°
angle indicated =ø=17.10°
help with this question thx
Answer:
3.5ft
Step-by-step explanation:
1. You bike 25 blocks in 20 minutes. Find the unit rate
Answer:
Hi! The answer to your question is 1.25
Step-by-step explanation:
☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆
☆Brainliest is greatly appreciated!☆
Hope this helps!!
- Brooklynn Deka
i need 17 thanksssssssss
Classify the triangle based on its angles.
Answer:
Acute triangle (Also a scalane triangle)
Step-by-step explanation:
G ,J and H are all acute
A circular hot spring has a diameter of 96 meters. Over time, the diameter of the spring decreases by 8 meters. By hou
many square meters does the area of the hot spring decrease? Use 3.14 for it.
Answer:
the area decreases by 1155.52 square meters
What is the 109th term of the arithmetic sequence {963, 936, 909, 882, …}?
a.3,879
b.2,674
c.-1,980
d.-1953
Answer:
D. a109=-1,953
Susan rolled a die 1,086 times. Which of the following would be a good estimate of the number of times she rolled the number 3 on die?
Hello!
This is a problem about probability.
What we would first do is find the theoretical probability that Susan would roll the number 3 on a die.
Assuming that this is a fair six sided die, there is only one face with the number 3, and there are 6 sides, meaning that the probability that Susan rolls a 3 would be [tex]\frac{1}{6}[/tex].
Now, Susan is rolling a die 1,086, meaning that we can divide this number by 6 to find the theoretical number of times that Susan would roll the number 3 on this die.
You should get 181 times, which would be a good estimate of how many times she could roll the number 3.
Hope this helps!
What type of graph would have the title, "Mile Time of a Typical 5th Grade Student
Answer:
bar graph or line plot
Step-by-step explanation:
PLSSSSSS HELPPPP 20 POINTSSS PLSSS
An airplane has an airspeed of 500 kilometers per hour (k/hr) in a
northerly direction (N 0˚ E). The wind velocity is 60 k/hr in a southeasterly (S45˚E)
direction. Let Va be the velocity of the plane relative to the air and Vw be the velocity
of the wind (both in terms of i and j).
1. Find vg = va + vw, the path of the plane relative to the ground. Round coefficients to the nearest tenth.
2. Find the actual speed and direction of the airplane relative to the ground. Round to the nearest tenth.