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UNO [17]
3 years ago
7

15 POINTS PLEASE HELP

Mathematics
1 answer:
adoni [48]3 years ago
5 0

hey....I didn't know the answer to question 6.

I know my handwriting sucks....if you have trouble understanding my handwriting

tell me...I ll explain it to you

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Translate each verbal description into an algebraic expression. Simplify the expression if you can.
liubo4ka [24]
1/2u - 3 x u
 2u x u = 2u
 answer 2u - 3

4 0
3 years ago
APQR is inscribed in a circle with P=60, Q = 80, and R = 40. What are the measures of PQ, QR, and PR?
Sergeeva-Olga [200]

Answer:

PQ:80

QR:160

PR:120

Step-by-step explanation:

PQ=2x∠R

=2×40

=80

QR=2×m∠p

=20×80

=160

PR=2×m∠Q

=2×60\\

=120

<em>hope it helps </em>

<em>have a great day!!</em>

5 0
3 years ago
May can swim one lap in 6.089 seconds, and Sarah can swim one lap in 6.098 seconds. Write an equation to compare their speeds.
Pie

6.098-6.089=.009 maybe?

6 0
3 years ago
Read 2 more answers
Simplify (7x+42)/(x^2+13x+42)
Colt1911 [192]
\frac{7x+42}{x^2+13x+42}=  \frac{7(x+6)}{x^2+7x+6x+42}=   \frac{7(x+6)}{x(x+7)+6(x+7)}=  \frac{7(x+6)}{(x+6)(x+7)}=  \frac{7}{x+7}
7 0
3 years ago
Read 2 more answers
You have fit a regression model with two regressors to a data set that has 20 observations. The total sum of squares is 1000 and
Llana [10]

Answer:

Hence the adjusted R-squared value for this model is 0.7205.

Step-by-step explanation:

Given n= sample size=20  

Total Sum of square (SST) =1000  

Model sum of square(SSR) =750  

Residual Sum of Square (SSE)=250  

The value of R ^2 for this model is,  

R^2 = \frac{SSR}{SST}  

R^2 = 750/1000 =0.75  

Adjusted R^2 :

Adjusted R^2 =1- \frac{(1-R^2)\times(n-1)}{(n-k-1)}

Where k= number of regressors in the model.

Adjusted R^2 =1-(19\times 0.25/((20-2-1)) = 0.7205

3 0
3 years ago
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