Answer:
The child needs a score of 37.2 to move up to the next level of the competition.
Step-by-step explanation:
The mean is the sum of all scores divided by the number of competions. So
![M = \frac{S}{T}](https://tex.z-dn.net/?f=M%20%3D%20%5Cfrac%7BS%7D%7BT%7D)
In which S is the sum of all her scores and T is the number of competitions.
The child has five competions:
Which means that ![T = 5](https://tex.z-dn.net/?f=T%20%3D%205)
She has to get a mean of at least 36.5, so ![M = 36.5](https://tex.z-dn.net/?f=M%20%3D%2036.5)
Her scores are: 35.5, 36.3. 36.6, and 36.9. Her last score, i am going to call x. So
![S = 35.5 + 36.3 + 36.6 + 36.9 + x = 145.3 + x](https://tex.z-dn.net/?f=S%20%3D%2035.5%20%2B%2036.3%20%2B%2036.6%20%2B%2036.9%20%2B%20x%20%3D%20145.3%20%2B%20x)
The child needs a score of _____ to move up to the next level of the competition.
This score is x. So
![M = \frac{S}{T}](https://tex.z-dn.net/?f=M%20%3D%20%5Cfrac%7BS%7D%7BT%7D)
![36.5 = \frac{145.3 + x}{5}](https://tex.z-dn.net/?f=36.5%20%3D%20%5Cfrac%7B145.3%20%2B%20x%7D%7B5%7D)
![145.3 + x = 36.5*5](https://tex.z-dn.net/?f=145.3%20%2B%20x%20%3D%2036.5%2A5)
![x = 37.2](https://tex.z-dn.net/?f=x%20%3D%2037.2)
Answer:
The equation of a right triangle is given by a2 + b2 = c2, where either a or b is the height and base of the triangle and c is the hypotenuse. Using the Pythagorean Theorem, finding the missing side of a triangle is pretty simple and easy. The two special right triangles include: 45°; 45°; 90° Triangle.
a correct answer that guy ☝ is rude can i get brainliest for answering
Answer:
it should take her 45 minutes to run 9 laps
Step-by-step explanation:
40/8 = 5
9*5 = 45
Answer:
Fraction of bread used in the recipe is 3/12 which can be further simplified into 1/4
Explanation:
The original loaf of bread is 100% complete (no fraction is taken from it yet). This means that the value of the original loaf is 12/12
Now, assume that the fraction used in the recipe is x
We know that:
2/12 of the loaf was used in making a sandwich
7/12 of the oaf was put in the refrigerator
Therefore:
complete loaf = fraction used in making a sandwich + fraction used in making recipe + fraction put in refrigerator
12/12 = x + 2/12 + 7/12
12/12 = x + 9/12
x = 12/12 - 9/12
x = 3/12
Hope this helps :)
Answer:
the answer is C.
Step-by-step explanation: