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4 years ago

Analyze the graph, please help me

Mathematics

1 answer:

ladessa [460]4 years ago

7 0

Answer:

a) 3rd degree

b) negative

c) 2

d) zero

e) the graph approaches +∞, -∞

Step-by-step explanation:

a) because two turns

b) because the function does not approach y=+∞ as x approaches x=+∞

c) the graph switches direction twice

d) from observation

e) it appears so, and is the nature of polynomials

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PLEASE HELP ME ID DONT UNDERSTAND

Anuta_ua [19.1K]

Answer:

1. m= 3/4

b= -7

2. 6x-4y = 20

-4y = -6x+20

y = 3/2x-5

m=3/2

b= -5

3 0

3 years ago

A survey reported in Time magazine included the question ‘‘Do you favor a federal law requiring a day waiting period to purchase

il63 [147K]

Answer:

The 90% confidence interval for the difference between proportions is (-0.260, -0.165).

Step-by-step explanation:

The question is incomplete. The complete question is:

"A survey reported in Time magazine included the question ‘‘Do you favor a federal law requiring a 15 day waiting period to purchase a gun?” Results from a random sample of US citizens showed that 318 of the 520 men who were surveyed supported this proposed law while 379 of the 460 women sampled said ‘‘yes”. Use this information to find a 90% confidence interval for the difference in the two proportions, pm - pw. Subscript pm is the proportion of men who support the proposed law and pw is the proportion of women who support the proposed law. (Round answers to 3 decimal places.)"

We want to calculate the bounds of a 90% confidence interval.

For a 90% CI, the critical value for z is z=1.645.

The sample of men, of size nm=-0.26 has a proportion of pm=0.612.

$p_m=X_m/n_m=318/520=0.612$

The sample 2, of size nw= has a proportion of pw=0.824.

$p_w=X_w/n_w=379/460=0.824$

The difference between proportions is (pm-pw)=-0.212.

$p_d=p_m-p_w=0.612-0.824=-0.212$

The pooled proportion, needed to calculate the standard error, is:

$p=\dfrac{X_m+X_w}{n_m+n_w}=\dfrac{318+379}{520+460}=\dfrac{697}{980}=0.711$

The estimated standard error of the difference between means is computed using the formula:

$s_{pm-pw}=\sqrt{\dfrac{p(1-p)}{n_m}+\dfrac{p(1-p)}{n_w}}=\sqrt{\dfrac{0.711*0.289}{520}+\dfrac{0.711*0.289}{460}}\\\\\\s_{pm-pw}=\sqrt{0.00039+0.00045}=\sqrt{0.001}=0.029$

Then, the margin of error is:

$MOE=z \cdot s_{pm-pw}=1.645\cdot 0.029=0.0477$

Then, the lower and upper bounds of the confidence interval are:

$LL=(p_1-p_2)-z\cdot s_{p1-p2} = -0.212-0.0477=-0.260\\\\UL=(p_1-p_2)+z\cdot s_{p1-p2}= -0.212+0.0477=-0.165$

The 90% confidence interval for the difference between proportions is (-0.260, -0.165).

6 0

3 years ago

If you could help me with this it would be greatly appreciated!

Ierofanga [76]

Here is your answer

B. $\sqrt{81}$

C. 9

REASON:

Let the side of square be a feet

Area of square = ${a}^{2}$

so,

${a}^{2}= 81$

$a= \sqrt{81}$

$a= 9 feet$

HOPE IT IS USEFUL

3 0

3 years ago

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In the figure at the right DC = 20 cm and AB =36 cm . what is FE? a.16cm b.56cm c.28cm d.46cm

puteri [66]

Answer:

however dc =20 cm is

Step-by-step explanation:

so this isnt contrary to 50

6 0

2 years ago

Read 2 more answers