Answer:
Step-by-step explanation:
1 km = 0. 621371 miles
28,300 km = 28,300* 0. 621371 miles = 17,584.7993 miles
1 hour = 60 *60 seconds = 3,600 seconds
speed of 28,300 km/hr =
17,584.7993 miles / 3,600 seconds ≈ 4.88 miles / second
5*95 math question ...................
Answer:
475
Step-by-step explanation:
the reason for this is because it just is
10+10=? trả lời đi mà
10Answer:
10 + 10 =
Step-by-step explanation:
=20
Find the value of X.
Answer:
X=25
Step-by-step explanation:
The angle of (x+30) is the same as the angle of 55. Simply subtract 30 from 55.
starts at 12 and ends at 6
Answer:
126
Step-by-step explanation:
i don't know if it's correct or not
A train decreased its speed by 72 miles hour in 12 minutes. Find the average change in speed per minute.
Answer:
6 mph
Step-by-step explanation:
The average rate of change of the speed of the train will be 6 miles per hour.
What is speed?Speed is defined as the ratio of the time distance travelled by the body to the time taken by the body to cover the distance. Speed is the ratio of the distance travelled by time. The unit of speed in miles per hour.
Given that a train decreased its speed by 72 miles per hour in 12 minutes.
As the train is reducing its speed by 72 miles per hour in 12 minutes the average rate of change of the speed will be calculated by dividing the change by the time.
Rate of change = 72 / 12
Rate of change = 6 miles per hour
Therefore, the average rate of change in the speed of the train will be 6 miles per hour.
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Can anyone help me with this question?
Answer:
13
Step-by-step explanation:
Since this is a right triangle, you can use the Pythagorean Theorem.
The side y would be the hypotenuse.
[tex]a^{2} + b^{2} = c^{2}[/tex]
Plug it in:
[tex]5^{2} + 12^{2} = y^{2}[/tex]
Isolate y:
y = [tex]\sqrt{ 5^{2} + 12^{2} }[/tex]
Solve:
y = 13
Selesaikan persamaan linear serentak berikut.
2x + y = -5
3x - 4y = 9
Answer:
(-1;-3)
Step-by-step explanation:
[tex]\left \{ {{4(2x+y)=4*(-5)} \atop {3x-4y=9}} \right. \ => \ \left \{ {{8x+4y=-20} \atop {3x-4y=9}} \right. \ => \ \left \{ {{11x=-11} \atop {2x+y=-5}} \right. \ => \ \left \{ {{x=-1} \atop {y=-3}} \right.[/tex]
Solve for n.
n + 1 = 4(n – 8)
i will give a brainliest
n + 1 = 4(n - 8)
n + 1 = 4n - 32
n - 4n = -32 - 1
-3n = -33 / : (-3)
n = 11
limθ→π/4 (cosθ−sinθ)/(θ– π/4)
Answer:
-√2
Step-by-step explanation:
For the typing purpose I replaced θ with n in the calculation
[tex]\lim_{n \to \frac{\pi }{4}} \frac{cos n-sin n}{\frac{\pi }{4} } ...limits L'Hopital's Rule\\= \lim_{n \to \frac{\pi }{4}} \frac{-sin n-cos n}{1 } ... plug. in . \frac{\pi }{4} \\= - sin \frac{\pi }{4} - cos \frac{\pi }{4}\\= - \frac{\sqrt{2} }{2} - \frac{\sqrt{2} }{2}\\= \frac{- 2\sqrt{2}}{2} \\= - \sqrt{2}[/tex]
Find the slope of each line.
Answer:
Slope: - 5/2
Step-by-step explanation:
i am confused and this is my last test on my khan academy due list
Answer:
[tex]3^{3}[/tex]= 3*3*3 or 27
[tex]4^{3}[/tex]= 4*4*4 or 64
[tex]3^{4}[/tex]= 3*3*3*3 or 81
Step-by-step explanation:
Hope this helps! :)
Answer:
[tex]X^{3}[/tex] = [tex]3^{3}[/tex] = 3*3*3 = 27 ( Because X is equal to 3 )
[tex]4^{X}[/tex] = [tex]4^{3[/tex] = 4*4*4 = 64
[tex]X^{4}[/tex] = [tex]3^{4}[/tex] = 3*3*3*3 = 81
Step-by-step explanation:
Hope this helps!
do all number lines show only whole number
Answer:
no
Step-by-step explanation:
no because some numbers could be negative and most number lines also contain 0. whole numbers are positive, non decimal/fractional, real numbers
Gary had a 40% discount for car speakers. The sale price of the speakers was $96.25. What was the original price of the speakers? Round to the nearest cent.
Answer:
Step-by-step explanation:
If the price after the discount is subtracted is $96.25 then this is what you do
u times 0.40 x 96.25 which is 38.5 so since you are wanting to know what the price was before the discount you would add 38.5 to 96.25 and when you do that your answer is 134.75
but if you are just trying to get the discount from 96.25 you subtract 38.5 from 96.25
Todd is buying material to fence his new garden. He buys 2 strands of barbed wire and a post for every 3m of fence. Each post costs 300 dollars and barbed wire costs 20 dollars per meter. What is the shape of the largest area Todd can enclose if he spends 3000 dollars on fence material? Show your work.
fence material 268 is your answer..
Can some please write my knowns and unknowns for this question
Answer:
Knowns:
initial velocity (v₀) = 0
final velocity (v₁) = 100 km/h
acceleration (a) = 9.00 m/s²
Unknowns: how long the acceleration took (Δt) = ?
Step-by-step explanation:
Use one of the kinematics equations to find what you're looking for.
This equation with a little algebra should help
v₁ = v₀ + aΔt
Which property is illustrated by the equation below?
(7+6) +4= 7+ (6 + 4)
associative property
O commutative property
distributive property
O identity property
Answer:
We conclude that the question illustrates associative property.
Which expression has a value between 0 and 1?
a. (1/2)^5 × (1/2)^10
b. (-3)^5
c. 4^-7 × 4^9
d. 2^2/2^-5
Answer:
a. (1/2)^5 × (1/2)^10
Step-by-step explanation:
HOPE IT HELPS YA
Marty says he would rather have –$5 than $0. Do you agree with Marty? Explain.
Answer:
No I don't agree with Marty because when or if I get more money I have to give it to the bank so lets say I earned 15 dollars I would have to give five to the bank because I owe the them but if Ii have 0 dollars I don't owe the bank money I get all the 15 dollars.
Step-by-step explanation:
Answer/Step-by-step explanation:
I disagree with Marty because If Marty would have -$5 it would mean he owns that person $5. If you don't have money you don't owe anything. If Marty would have -$5 it would mean he owns that person $5. If you don't have money you don't owe anything.
Ted needs an average of at least 70 on his three day history tests. He has already scored 80 and 60 on two tests. What is the minimum grade Ted needs on his third.
Thank you for your assistance
Answer:
Step-by-step explanation:
To solve, we first need to know how to find the average of a group of numbers. To find the average of a group of numbers, you add all the numbers together and divide that answer by the number of numbers you have. For instance, to find the average of 1, 2, 3, 4 and 5, we would add all the numbers together, which would equal 15. We would then divide that number by 5, because there are 5 numbers total: 15/5 = 3. So the average is 3.
Now, to find the average in your problem, we need to look at what we know:
He received an 85 and 60 on two of the test scores
He needs an overall average of 70
Let's set this up in equation form:
%2885+%2B+60+%2B+x%29%2F3+%3E=+70
Now, let's get rid of our fraction on the left. We can do this by multiplying the entire equation by 3, giving us:
85 + 60 + x >= 210
Next, combine the numbers on the left, which will give us:
145 + x >= 210
Finally, subtract 145 from both sides, which will give us our answer:
145 + x - 145 >= 210 - 145 =
x >= 65
So, in order to average at least 70, he must score a 65 or higher on his third test.
Solve the quadratic equation
d²-5d+6=0
Answer:
BBC
Step-by-step explanation:
Answer:
d = 6 d = -1
Step-by-step explanation:
Use displacement to factor
d²-5d+6=0
d²+d-6d-6=0
d(d+1)-6(d+1)=0
(d-6)(d+1)=0
d-6=0 or d+1=0
d = 6 d = -1
(4,-3),m=-1 in standard form
Answer:
Step-by-step explanation:
m = -1 ; ( 4 , -3)
y - y1 = m(x - x1)
y - (-3) = -1(x - 4)
y+ 3 = -x + 4
Add x to both side.
x +y + 3 = 0
Subtract 4 from both sides
x + y + 3 - 4 = 0
x +y - 1 = 0
What is the reciprocal of -3 2/7 in fraction form?
Answer:
7/23
Step-by-step explanation:
3 2/7 - so 7 times 3 is 21, plus the extra 2 is 23, so it then becomes the improper fraction 23/7, which switched becomes 7/23
Answer: is in picture below
A reason improper use of netiquette can be risky is that users can
O become vulnerable to online harassment.
O access inappropriate websites.
O have their private information stolen.
O receive unwanted spam.
The answer is A, Sorry I am late but for the future people i hope this helps them :))
- Have a nice day.
The improper use of netiquette can be risky as the user can become vulnerable to online harassment.
What is cybersecurity?Protecting the online data from the digital attacks initiated by a hacker is called cybersecurity. Cybersecurity is necessary to protect the various systems, networks and programs that may contain some confidential information about any person.
Given is to identify the reason why the improper use of netiquette can be risky.
The improper use of netiquette can be risky as the user can become vulnerable to online harassment.
Therefore, the improper use of netiquette can be risky as the user can become vulnerable to online harassment.
To solve more questions on cybersecurity, visit the link-
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=
The length of a rectangular room is 15 feet longer than the width. If the room's perimeter is 250 feet,
what are the room's dimensions?
Width = 70 ft; length = 280 ft
Width = 55 ft; length = 70 ft
Width = 70 ft; length = 35 ft
Width = 55 ft; length = 220 ft
Answer:
B. Width = 55ft; length = 70ft
Step-by-step explanation:
it is the only one in which the length is 15 ft longer than that of the width.
Suppose that the average speed of cars on a busy section of a local highway was normally distributed with a mean of 65 mph and standard deviation of 4 mph. What is the probability that the speed of a random car in this data set was less than 53 mph?
0.025
0.0015
0.16
0.475
==================================================
Explanation:
mu = 65 = population meansigma = 4 = population standard deviationLet's convert x = 53 to its corresponding z score
z = (x-mu)/sigma
z = (53-65)/4
z = -12/4
z = -3
This indicates we're 3 standard deviations below the mean.
Recall that the Empirical Rule states that roughly 99.7% of the data items in a normal distribution are within 3 standard deviations of the mean. That leaves 100% - 99.7% = 0.3% outside this range. This small percentage is the combined percentage in both tails. Take half of this to find the amount in the left tail only.
(0.3%)/2 = 0.15%
This then converts to 0.0015 when we move the decimal point 2 spots to the left.
cho hình thang ABCD vuông tại A và D cho biết AD=20 AC=52 và BC=29 Tính độ dài AB
Answer:
https://sooddan.zendesk.com
v = u + wz, make z the subject
Think about all the ways in which a circle and a parabola can intersect.
Select all of the number of ways in which a circle and parabola can intersect.
0
1
2
3
4
5
Answer:
3
Step-by-step explanation:
Answer:
0,1,2,3,4
Step-by-step explanation:
trustttttt meee
M<2 = 4x +6
What is the value of X?
Answer:
Step-by-step explanation: 10 but thanks green guy
Answer:
x = 10
Step-by-step explanation:
The triangle has 2 congruent sides and is therefore isosceles, then the 2 base angles are congruent, both 67°
The sum of the 3 angles is 180° , that is
4x + 6 + 67 + 67 = 180
4x + 140 = 180 ( subtract 140 from both sides )
4x = 40 ( divide both sides by 4 )
x = 10
Melinda put 64 pieces of cake on a table. She placed them in 8 rows with the same number in each row. Each row had an equal number of two flavors of cake. How many pieces of each flavor were in one row?
( ugh math)
Answer:
There were 4 pieces
Step-by-step explanation:
