First, we know that in order to find the average of a group of numbers, we need to add all the values together and divide by the number of values. In this case, we can write a formula for the average in order to solve for the unknown test score that Kia needs to receive: 80=(76+85+82+75+74+x)/6 (x represents the unknown test score). The reason we divide by 6 rather than by 5 is because with the new test score, there will be a total of 6 test scores. First, we can simplify the equation to 80=(392+x)/6. Then, we can cross multiply to get 80*6=392+x or 480=392+x. Lastly, we must subtract 392 from both sides to get x=88 so the answer is choice B.
Answer:
10³ = 10 * 10 * 10 = 1000
According to the given data we have the following:
right triangle contains another angle=x
Opposite that angle is a side measuring 9cm
Therefore, to find the length of the side adjacent to that 35-degree angle we would have to make the following calculation:
sin 35=9cm/x
x=9cm/ sin 35
x=15.60 cm
Therefore, the length of the side adjacent would be of 15.60 cm.
Equation: x + x + 6 = 2x = 25
smallest side is 4.75 units
largest size is 4.75 + 6 = 10.75 units
3rd side is 2(4.75)= 9.5 units
smallest side is x
largest size is x + 6
3rd side is 2x
-----------------------------------
4x + 6 = 25
-6 -6
<u>4x</u> = <span><u>19</u>
</span> 4 4
x = 4.75 is the smallest side
smallest side is 4.75 units
largest size is 4.75 + 6 = 10.75 units
3rd side is 2(4.75)= 9.5 units
81- answer is ok but im not suree