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Stella [2.4K]
3 years ago
9

Please help, 30 points, brainliest, and thanks!

Mathematics
1 answer:
PolarNik [594]3 years ago
6 0
BEDMAS is a main strategy to simplify algebraic expressions. Following the order of operations ensures accuracy.
Inverse operations help solve equations by isolating the value(usually a variable) that you are trying to find. Or by rearranging the equation so that it can be simplified or solved easier.
A real world scenario would be conversions. By using ratios of conversions and manipulating the equation you can convert many things.
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Bob's carpet cleaning company uses the equation y=22x+30 to calculate cost, y, to clean x numbers of rooms. Andy's carpet cleani
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Bob charges $140 
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6 0
3 years ago
Use the data in LAWSCH85 for this exercise. (i) Using the same model as in Problem 4 in Chapter 3, state and test the null hypot
natka813 [3]

Answer:

Step-by-step explanation:

In the model

Log (salary) = B0 + B1LSAT +B2GPA +B3log(libvol) +B4log(cost)+B5 rank+u

The hypothesis that rank has no effect on log (salary) is H0:B5 = 0. The estimated equation (now with standard errors) is

               Log (salary) =    8.34 +    .0047 LSAT +   .248 GPA +   .095 log(libvol)

                                        (0.53)     (.0040)              (.090)            (.033)

                                         +     .038 log(cost)    – .0033 rank

                                              (.032)                    (.0003)

                   n = 136,    R2 = .842.

The t statistic on rank is –11(i.e. 0.0033/0.0003), which is very significant. If rank decreases by 10 (which is a move up for a law school), median starting salary is predicted to increase by about 3.3%.

(ii) LSAT is not statistically significant (t statistic ≈1.18) but GPA is very significance (t statistic  ≈2.76). The test for joint significance is moot given that GPA is so significant, but for completeness the F statistic is about 9.95 (with 2 and 130 df) and p-value ≈.0001.

6 0
3 years ago
Multiple choice plz plz help! And explain :) thank u!
kolbaska11 [484]
It all the way across a circle so 

7.3+7.3=14.6 so that your answer

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3 years ago
Simplify cos^4x+2cos^2xsin^2x+sin^4x
KonstantinChe [14]

Answer: 1

Step-by-step explanation:

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2 years ago
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.The children initially didn't expect to have fun cleaning the attic, but then they discovered the treasure map.

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3 years ago
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