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kozerog [31]
3 years ago
6

Please help me I will give you extra points and whoever the first one to answer I mark you with the brain thing. 7

Mathematics
1 answer:
Stels [109]3 years ago
3 0

Answer:

d.

Step-by-step explanation:

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You can ride your bike around your block twice and the whole neighborhood once in 10 minutes. You can ride your bike around your
Bond [772]
I THINK,4=31
1=?
(1*31)/4=x
X=31/4
X=7.75minute to ride around the neighborhood once
It may not be correct
6 0
2 years ago
What is the standard deviation of the following data set 1,1.2,4,1.28,4.1,5.3?
VikaD [51]
Memorize the definition of standard deviation: the sd is the square root of the average of the squared deviations of the mean. Wow. Let's do it.

Step 1. First we need the mean. That's easy. Add them up and divide by the count. Check if you get 16.88/5 = 2.81333.

Step 2. Now we're going to subtract this from each of the values, and square the result. Don't worry about negative signs, the squaring will get rid of those. Example for the first number:

(1 - 2.813)^2 = 3.29

The list of numbers I get is (rounded, in reality round as little as possible):

3.29, 2.60, 1.41, 2.35, 1.66, 6.18

Step 3: Add them all up. I get 17.49. 
Step 4: Divide by the count of numbers. 17.49/6 = 2.91
Step 5: Take the square root from this result. SQRT(2.91) = 1.707305

TIP: Use excel to do all these steps, then run the set of numbers through Excel's built-in sd function (called  STDEV.P) and see that you get the same result!
3 0
3 years ago
please help 20 points if do
NISA [10]

Answer:

2,34x

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
How can you use the value of x to find the measurements of the angles? PLZ HELP I WILL MARK YOU BRAINLYEST
makvit [3.9K]

Answer:

140/3 or 46.6(with the 6 repeating)

Step-by-step explanation:

(x+55)+(2x-15)=180

4 0
3 years ago
Using the linear combination method what is the solution to the system of linear equations 7x - 2y = -20 and 9x + 4y = -6
Ghella [55]

x should equal -2 and y should equal -3 to solve this i multiplied the first equation by 2 then got rid of the 4y and -4y then i added the 14x to the 9 equaling 23x and added the -40 to the -6 which became 23x=-46 i solved this getting -s for x, then i plugged that into the equations to get y which was -3

8 0
3 years ago
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