3 years ago

Please help me with this

Mathematics

1 answer:

zhannawk [14.2K]3 years ago

6 0

I’m pretty sure it’s 82

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Let f(x) = x^2 - 11x - 60. Solve for f(x) using factoring.

Alona [7]

F(x) = X^2 - 11x - 60
Two terms that multiply to -60 and add to -11 so...
F(x) = (X - 15) (x + 4)
Your x-intercepts would be 15 and -4.

4 0

3 years ago

What is the domain of f(x)-(1/4)^x?

GrogVix [38]

D. All real numbers
The domain can be anywhere from negative infinity to infinity (-♾️ , ♾️ )

3 0

2 years ago

The following estimated regression equation based on 30 observations was presented. ŷ = 17.6 + 3.8x1 − 2.3x2 + 7.6x3 + 2.7x4 The

trapecia [35]

Answer:

a) = 0.9739

b) = 0.969

c) option A is correct

Step-by-step explanation:

Given that:

sample size n = 30

SST = 1803

SSR = 1756

$R^2 = \dfrac{SSR}{SST} \\ \\ R ^2 = \dfrac{1756}{1803} \\ \\ \mathbf{R^2 =0.9739}$

The adjusted $R_a^2$ is computed as:

$R_a^2 = 1 - (\dfrac{n-1}{n-p})(1-R^2)$

where;

$p = k+1 \\ p= 4+1 = 5$

$R_a^2 = 1 - (\dfrac{30-1}{30-5})(1-0.9739)$

$R_a^2 = 1 - (\dfrac{29}{25})(0.0261)$

$R_a^2 = 1 - (1.16)(0.0261)$

$R_a^2 = 1 -0.030276$

$\mathbf{R_a^2 \simeq 0.969}$

7 0

3 years ago

20 + 12k - 76 - 8 Help me please

Hunter-Best [27]

Answer:

12 + 5k

Step-by-step explanation:

=> 20 + 12k - 7k - 8

=> 20 - 8 + 12k - 7k

=> 12 + 5k

Hence correct answer is 12 + 5k.

8 0

4 years ago

Read 2 more answers

The cost of dinner for 5 friends was $75, plus a $15 tip. If the cost of the meal and tip was split eqaully among the friends, h

stiv31 [10]

They each paid $18. 75+15= 90 and 90/5=18

3 0

3 years ago