Juan has taken four skill checks for the third grading period and earned a 60, a 75, an 85 and a 95. If the Unit Test counts as TWO skill check grades, what is the range of scores that Juan can earn on the Unit Exam so that he will earn a B? (Between 79 and 90) Write the inequality that can be used to solve for the range of values Juan must earn on his unit exam to meet his goal?

Please note that I am using the < and > symbol, because he wants to earn a B which is BETWEEN 79 and 90 and does NOT include them.

I also completed the first step of multiplying all parts of the inequality by the denominator (6) to "elliminate" it from my average formula.

4444444444444 i think

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!