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ikadub [295]
3 years ago
11

Please answer 13 and 14

Mathematics
2 answers:
Deffense [45]3 years ago
5 0

Q13. The answer is 0.14

Q14. The answer is 125m^2

Hope this helps!

gtnhenbr [62]3 years ago
4 0

Q13 is 140m

Q14 is 125m2

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Find the value of x in the figure below
Ksju [112]

Answer:

answers below.

Step-by-step explanation:

50+x+5+180-4x-10=180

225-3x=180

-3x=-45

x=15

m<B=20

m<ACB=110

m<ACD=70

6 0
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Wewaii [24]

The answer are:

1.D

2.C

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3 years ago
If two linear regression models have the same number of explanatory variables, a model with an R2 value of 0.45 is a better pred
icang [17]

Answer:

False

Step-by-step explanation:

Given that two linear  regression models have the same number of explanatory variables

First model has coefficient of determination as 0.45 while other

0.65

we know that R^2 is the proportion showing the variation of dependent because of variation in independent variables.

Hence a higher R square is always better because it ensures more linearity and hence more accuracy in the regression equation.

Hence 0.65 model is better than 0.45 model.

The given statement is false.

5 0
3 years ago
Find one value of x that is a solution to the equation:<br> (2x + 3)2 – 4(2x + 3) - 12 = 0
Flauer [41]

Answer:

x = 3/2

Step-by-step explanation:

(2x + 3)2 – 4(2x + 3) - 12 = 0

Simplify the equation then isolate for x.

Distribute over brackets:

(4x + 6) – (8x + 12) - 12 = 0

Combine like terms:

4x + 6 – 8x + 12 - 12 = 0

6 - 4x = 0

Isolate x:

6 = 4x

6/4 = x

Reduce the fraction:

6/4 = x    <= divide top and bottom by "scale factor" of 2

3/2 = x

x = 3/2    <= having x on the left side is standard

3 0
3 years ago
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