Answer:
Step-by-step explanation:
Marking brainliest
Please help!
Answer:
The equation for the speed of the train is: 162 = 3x
I think the speed of the train is 54 miles per hour
Step-by-step explanation:
We know that:
y = distance in miles
x = speed of train (miles/hour)
t = time traveled from the departing station (hours)
The equation: y = xt is given, we can therefore substitute the give values:
y = xt or tx
162 = 3x (This would be the equation)
Now we can find x by diving 3 on both sides of "="
162/3 = x
54 = x (This would be the speed of train)
Hope this helps!
help me with my math please
Answer:
Volume of a cylinder = πr²h
Given
V=81π
r=3
find h
Making h the subject
h= V/πr² = 81π/π(3)²
h= 81/9
h= 9cm
is a= 3-√5 fins the value of a+1/a
Answer:
Decimal form: 2.07
Step-by-step explanation:
ons
1
Nos
y= X+3
y= X+3
How many solutions
please help it is due in 10 minutes
Answer:
1. X= 4
2. X= 1
3. X= 3
4. X= 5
5. X= 7
6. X= -3/4
7. X= 6
8. X= 5
Step-by-step explanation:
Answer:
Look below :)
Step-by-step explanation:
1.x=4
2.×=1
3.x=3
4.x=5
5.x=7
6.x=-0.75
7.x=6
8.x=5
Hope this helps :)
Which of the following would be a sub-heading in an outline about pets?
1. dogs
2. shoes
3. flowers
4. rocks
nswer the next two que
A particle travels across a detector, following a path given by:
9x - 4y + 2 = 0
The slope of the graph of this line, to two decimals, is
Answer: 639
Step-by-step explanation:
Multiple
(4pq+3q)² - (4pq - 3q)²
Answer:
48pq².
Step-by-step explanation:
(4pq+3q)² - (4pq - 3q)²
This is the difference of 2 squares so we can use the identity
a^2 - b^2 = (a - b)(a + b):
(4pq+3q)² - (4pq - 3q)²
= (4pq + 3q - (4pq - 3q)(4pq + 3q + (4pq - 3q)
= (4pq + 3q - 4pq + 3q)(4pq + 3q + 4pq - 3q)
= 6q * 8pq
= 48pq².
Answer:
48pq²
Step-by-step explanation:
As we know,
(a + b)² = a² + 2ab + b²
and
(a – b)² = a² – 2ab + b²
So,
(4pq+3q)² - (4pq - 3q)²
= [(4pq)² + 2 X 4pq² X 3q + (3q)²] – [(4pq)² - 2 X 4pq² X 3q + (3q)²]
= (16p²q² + 24pq²+ 9q²) – (16p²q² – 24pq²+ 9q²)
= 16p²q²+ 24pq²+ 9q² – 16p²q²+ 24pq² – 9q²
= 24pq² + 24pq²
= 48pq²
Which of the following best describes the graph below?
N+
5
-4
-3 -2 -1
1
- 1
3
-2
-3
O A. It is a function, but it is not one-to-one.
B. It is a one-to-one function.
O C. It is not a function.
OD. It is a many-to-one function.
Answer:
C. it is not a function
Step-by-step explanation:
It fails the horizontal and vertical line test.
To pass the horizontal line test [injective]: must not hit a horizontal line passing through more than once.
To pass the vertical line test [function]: must not hit a vertical line passing through more than once.
Mark has a piece of wood that is 11 1/4 ft long. He cuts the piece of wood into as many 2 1/2 -ft pieces as he can. How long is the leftover piece of wood?
Answer: 9
Step-by-step explanation:
11 2/4 - 2 1/2
46/4 - 5/2
23/2 - 5/2
=18/2= 9
I will mark as brillianest...plzz solve the question.
Factorize:
1) 6x²+x-2
Answer:
( 2 − 1 ) ( 3 + 2 )
Step-by-step explanation:
6 ² + − 2
6x² + 4 - 3 -2
2 ( 3 + 2 )− 1 ( 3 +2 )
( 2 − 1 ) ( 3 + 2 )
A rectangle is measured by 2 1/3 inches and 2 1/3 inches what is the area
Answer:
5.44444442889 or 5 [tex]\frac{4}{9}[/tex]
Step-by-step explanation:
Just multiply the 2 numbers together
Answer:
[tex]2\frac{1}{3}^{2}[/tex] or 49/9 inches squared
Step-by-step explanation:
you have a square if those lengths are correct, and the formula for the area of a square is Bh=A B=base length (side on bottom), h=height (vertical side), and A=area, so 2 1/3 * 2 1/3 or 2 1/3^2
if that doesnt make sense, message me and i will try to help you more
Need help on this! Maybe be marked brainliest? :)
Answer:
3 1/4 hours
Step-by-step explanation:
1 hour + 1/4 hour + 3/4 hours = 2 hours
3/4 hour + 2/4 hour = 1 1/4 hours
2 hours + 1 1/4 hours = 3 1/4 hours
Explain why this comparison is either reasonable or not reasonable. 2.5 = 2.05
No, this comparison is not reasonable.
✐ Step-by-step explanation:This is the comparison given,
[tex]2.5 = 2.05[/tex]
Now,
[tex]2.5 = 2.50[/tex]
We know that,
[tex]2 .50 > 2.05[/tex]
So,
[tex]2.50 ≠ 2.05 \\ •°• \: 2.5 ≠ 2.05[/tex]
⎇ Hence, the comparison is not reasonable.
In right triangle DEF, it is known that Cos D = (12/13) and Cos F = (5/13). If FD = 39, then DE = ? Hint, draw the right triangle.
Answer:
The value of the line segment [tex]ED[/tex] is 36.
Step-by-step explanation:
The hypotenuse represents the longest side in the right triangle. In this case, FD represents the hypotenuse as it is a multiple of 13. Based on the trigonometric relations described in the statements, we get the following relationships by definition of cosines:
[tex]\cos D = \frac{ED}{FD}[/tex] (1)
[tex]\cos F = \frac{EF}{FD}[/tex] (2)
If we know that [tex]\cos D = \frac{12}{13}[/tex] and [tex]FD = 39[/tex], then the length of the line segment [tex]ED[/tex] is:
[tex]ED = FD\cdot \cos D[/tex]
[tex]ED = 39\cdot \left(\frac{12}{13} \right)[/tex]
[tex]ED = 36[/tex]
The value of the line segment [tex]ED[/tex] is 36.
Find the value of x in the isosceles triangle shown below.
13
13
20
10
Answer:
X=12
Step-by-step explanation:
Khan Academy
a quadrilateral has angle measures of 35.8°, 25.4°, and 178°. What is the other angle measure?
Answer:
120.8°
Step-by-step explanation:
the total angle sum is of 360 so we add and subtract
35.8+25.4+178= 239.2
360-239.2= 120.8
so the missing angle measure is 120.8°
SHOW how to use vertical addition to add 5x^2 - 9x - 8 + (3x -6 + 2x^2) DO NOT SOLVE
Answer:
okay
Step-by-step explanation:
hello please help i’ll give brainliest
Answer:
b. option Is the correct answer
help, will mark brainliest!! and give 5 stars this is due 2day!!
11. brother = ???
???- 12 = 14
14+12=26
brother is 26.
12. 21.35 - 8.95 = 12.4
cost of colored pencils = $12.40
13. 37- 8 = 29
14. $95 - $73 = $22
Two apples cost 60 cents. How much do five cost?
cost?
Answer:
5 apples cost = 150 /-
Step-by-step explanation:
Two apples cost = 60 /-
Then 1 apple cost = 60 ÷ 2
= 30
∴ 1 apple cost = 30 /-
Then 5 apples cost = 30 × 5
= 150
∴ 5 apples cost = 150 /-
Hope it is helpful....PLZ HELP I BEGG. NEEDDD
Answer:
192
Step-by-step explanation:
Volume of triangular prism = area of base * length
The base of the triangular prism is a triangle
The area of a triangle can be calculated by multiplying the base length by the height and dividing that by 2
The base has a base length of 4m and a height of 8m
So area of base = [tex]\frac{4*8}{2}[/tex]
4 * 8 = 32
32 / 2 = 16
So the area of the base is 16m²
The prism has a length of 12m and we have identified that the area of the base is 16 so volume = 12 * 16
12 * 16 = 192
So the volume of the triangular prism is 192m³
Answer:
192 m^3
Step-by-step explanation:
V = 1/2 * 4 * 8 *12
V = 1/2 * 384
V = 192
Hope this helps!
What is the product of the complex numbers below?
(3-9i)(6-i)
Answer:
(9-57i)
Step-by-step explanation:
We need to find the product of the given complex number i.e.
(3-9i)(6-i)
It can be solved as follows :
(3-9i)(6-i) = 3(6) +3(-i) +(-9i)(6) + 9i(i)
= 18-3i-54i+9i²
We know that, i² = -1
So,
= 18-3i-54i+9(-1)
= 18-57i-9
= 9-57i
So, the product of the given complex number is (9-57i).
if an instrument measures in units of 1 then any value between which two values would be measure as 5?
a) 3.5 and 6.5
b) 4 and 6
c) 4.5 and 5.5
d) 5 and 6
Did you get the answer yet?
A board is 2/3 yards long Jackie cuts the board into pieces that are 1/6 yards long how many pieces are there
Answer:
4
Step-by-step explanation:
2/3 ÷ 1/6 =
2/3 x 6/1 =
12/3 = 4
Also you can do:
2/3 = 4/6
there are 4- 1/6 in 4/6
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
heyy! i’ll give brainliest please help
A bag contains 5 black marbles, 7 blue marbles, 3 green marbles, 4 red marbles, and 1 white marble. A marble is selected and then replaced and a second marble is chosen. What is the probability of selecting a black marble and then a red marble?
Answer:
2/25
Step-by-step explanation:
It will be 20/400 + 12/400
=2/25
Answer:
2/25
Step-by-step explanation:
ASAP
-WILL MARK BRIANiST
Answer:
5/18
Step-by-step explanation:
(5/6)/3
5/6 X 1/3
5/18
PLEASE HELP ME
Answer the question in the picture.
Answer:
3^-2=1/9
3^0=1
3^1=3
3^2=9
Answer:
3^-2 = 1/9
3^0 = 1
3^1 = 3
3^2 = 9
The point E(-2, 1) is rotated 90° counterclockwise around the origin. What are the coordinates of the resulting point, E′?
Answer:
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