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galina1969 [7]
2 years ago
8

Number Sense A bike helmet has a

Mathematics
2 answers:
Zarrin [17]2 years ago
6 0

Answer: The estimate is greater than the actual mass.

labwork [276]2 years ago
6 0

Answer: Elena is right, that is about 300 grams so her estimate is equal to the actual mass

Step-by-step explanation:

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Help 18 points pleaseeeeeeee
Genrish500 [490]
Answer : 9
explanation
8 0
3 years ago
What is the SLOPE and Y-INTERCEPT of the following equation. y = -x +7 ​
Natalka [10]
The slope is m=-1
Because the formula is y=mx+b (b is the intercept) (or replace 0 with x so that will be y=7)
And the Y intercept is 7 :)
I hope this helped!
8 0
3 years ago
There are 90 students in the sixth grade at Columbus Middle School, and 63 of those students participate in school sports.
Andrej [43]

Answer:

70% of the sixth graders participate in school sports

Step-by-step explanation:

63 ÷ 90 = 0.7 =70

round the decimal two places to the right

Hope this helps!!

3 0
3 years ago
Help me please #7!!!!!!
MatroZZZ [7]

Applying parallel line postulate twice

36degree=3x degree +2y degree

126 degrees=12 x degree + 2y degree

So, the two equations are:

3x + 2y = 36

and

12x + 2y = 126

Eliminate x to solve for y

-(3x + 2y)= -(36)

-3x - 2y = -36

Combine the equations

(-3x - 2y)+ (12x + 2y) = (-36) + (126)

-3x -2y + 12x + 2y = -36 + 126

9x = 90

x = 10

Plug value of x back into to the equations to solve for y

3(10) + 2y = 36

30 + 2y = 36

2y =6

y = 3

Optional

Plug x into the other equation to check for error

12(10) +2y = 126

120 + 2y =126

2y = 6

y = 3

4 0
4 years ago
A box contains a collection of triangular and square tiles. There are 2525 tiles in the box, containing 8484 edges total. How ma
AnnyKZ [126]
Let us consider the number of edges = x
we know that a triangle will have 3 edges and a square will have 4 edges. Using this details we can form an equation.
3x + 4x = 8484
7x = 8484
x = 8484/7
  = 1212
Then
Number of square tiles = 1212/4
                                     = 303
So there are 303 square tiles in the box. I hope the procedure is clear enough for your understanding. You can always use this method for solving similar problems.
                                                      
5 0
3 years ago
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