Given:
To find:
The error that a student has made while solving the equation.
Solution:
We have,
Using distributive property, we get
Subtract 6 from both sides.
Divide both sides by -2.
The value of x is 1.
In step 2, the distributive property is not used properly because when -2 is distributive with -3 then we get 6 instead of -6.
Therefore, the student has made error in step 2.
Using the concept of probability and the combination formula, it is found that there is a 0.4444 = 44.44% probability they get to be on the same team.
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- A probability is the <u>number of desired outcomes divided by the number of total outcomes.</u>
- The order in which the children are chosen is not important, which means that the combination formula is used to find the number of outcomes.
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<u>Combination formula:
</u>
is the number of different combinations of<u> x objects from a set of n elements</u>, given by the following formula.
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Finding the number of desired outcomes:
- Andy and Ollie on the same team, plus 3 children from a set of 8.
- Can be on either team, blue or red, so multiplied by 2.
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Finding the number of total outcomes:
- <u>5 children from a set of 10</u>, thus:
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The probability is:
0.4444 = 44.44% probability they get to be on the same team.
A similar problem is given at brainly.com/question/22931444
Answer:
7.03 ft/s
Step-by-step explanation:
To obtain speed using the model :
Speed = sqrt(gL)
L = Length of leg, g = acceleration due to gravity
Length of leg of a giraffe = 6.03
g = 9.8 m/s or 32 ft/s²
Speed of giraffe in ft/s = sqrt(32 * 6.03) = 13.89 ft/ s
Speed of coyote ; L = 0.46 m
L in feets = 0.46 * 3.23 = 1.4858 feets
s = sqrt(1.4858 * 32) = 6.895 ft/s = 6.86 ft/s
Difference in speed :
13.89 - 6.86 = 7.03 ft/s
Giraffe has 7.03ft/s more speed Than a coyote
Hello :
for exemple ; x = 3t+2 y = -2t +7