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2 years ago

Which of the following best describes the graphs below?

Mathematics

1 answer:

Leya [2.2K]2 years ago

4 0

Answer:

Step-by-step explanation:

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PLEASEEE HELPPPP!!!!!!!!!skkaksks

Vesnalui [34]

Step-by-step explanation:

(√3+√7)(√3+√7)
(√3)^2+[(√3*√7)+(√3*√7)]+(√7)^2
3+2√21+7
10+2√21

6 0

2 years ago

A hotel plans to use marble for part of the floor lobby. The marble section of the floor will be in the shape of a triangle with

lidiya [134]

It will cost $14,400 to do the triangle the hotel plans to do.

8 0

2 years ago

Read 2 more answers

. Could someone please explain this to me in detail. I am very confused. Thank you so much!. . A candle is 17 inches tall after

andrew-mc [135]

The generic equation of the line is:

$H-H0 = m (T-T0)$

Where,

m: slope of the line

(T0, H0): ordered pair belonging to the line.

The slope of the line is:

$m =\frac{H2-H1}{T2-T1}$

Substituting values we have:

$m =\frac{15-17}{5-3}$

Rewriting:

$m =\frac{-2}{2}$

$m = -1$

Then, choosing an ordered pair we have:

$(T0, H0) :( 5, 15)$

Substituting values we have:

$H-15=-(T-5)$

Rewriting the equation:

$H-15=-T+5$

$H=-T+5+15$

$H=-T+20$

Then, for 8 hours we have:

$H=-8+20$

$H=12$

Answer:

a linear equation to model the relationship between height H of the candle, and T time is:

$H=-T+20$

the candle will be 12 inches after burning 8 hours

7 0

2 years ago

Read 2 more answers

If we wanted to create a new 90% confidence interval from a different sample for the proportion of those with a two on one date

slava [35]

Answer: 271

Step-by-step explanation:

The formula we use to find the sample size is given by :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$

, where $z_{\alpha/2}$ is the two-tailed z-value for significance level of $(\alpha)$

p = prior estimation of the proportion

E = Margin of error.

If prior estimation of the proportion is unknown, then we take p= 0.5 , the formula becomes

$n=0.5(1-0.5)(\dfrac{z_{\alpha/2}}{E})^2$

$n=0.25(\dfrac{z_{\alpha/2}}{E})^2$

Given : Margin of error : E= 0.05

Confidence level = 90%

Significance level $\alpha=1-0.90=0.10$

Using z-value table , Two-tailed z-value for significance level of $0.10$

$z_{\alpha/2}=1.645$

Then, the required sample size would be :

$n=0.25(\dfrac{1.645}{0.05})^2$

Simplify,

$n=270.6025\approx271$

Hence, the required minimum sample size =271

3 0

3 years ago

Find the domain of the following piece wise function

anastassius [24]

Answer:

Step-by-step explanation:

$f(x)=\left\{\begin{array}{ccc}x+4&if&-4\leq x$

8 0

3 years ago