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3 years ago

Which functions are decreasing? Select all answers that are correct.

Mathematics

2 answers:

bazaltina [42]3 years ago

8 0

Answer:

it's number 3 and number 4

i took the quiz

monitta3 years ago

7 0

Answer:

The last two functions are decreasing!

Step-by-step explanation:

You can easily tell the functions are decreasing if the function is going down from L to R. If it is going up, from L to R, then it is increasing!

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Determine the value of x for which a || b if m<3=10x and m<5=12x-25

dangina [55]

10x=12x-25
-2x=-25
2x=25
x=2.5

6 0

3 years ago

If the bases of an isosceles trapezoid have lengths of 11 and 24, what is the length of the median? A. 17.5 units B. 35 units C.

erma4kov [3.2K]

Answer:

Option A. $17.5\ units$

Step-by-step explanation:

we know that

The measure of the median is the semi-sum of the bases

$\frac{1}{2}(11+24)=17.5\ units$

4 0

3 years ago

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the sitting height (from the bottom of the seat to the top of the person's head) of female drivers is normally distributed with

Sindrei [870]

Answer:

B; 50%

Step-by-step explanation:

Here, we want to calculate the percentage of women that will not fit in the driver’s seat

We proceed as follows;

We start with calculating the z-score of this;

That would be ;

(x-mean)/SD

in this case;

x = 34 inches

mean = 34 inches

SD = 1.4 inches

Thus, we have that;

(34-34)/1.4 = 0/1.4 = 0

when z-score is 0, we are at the center of the distribution

A z-score of 0 corresponds to exactly 50%

6 0

3 years ago

Julia wants to estimate the percentage of people who submit their tax returns online. She surveys 330 individuals and finds that

larisa86 [58]

Answer: 0.0432

Step-by-step explanation:

Formula of Margin of Error :-

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

Given : Sample size : n= 400

The proportion of individuals use public transportation.= $\dfrac{65}{330}\approx0.20$

Level of confidence = 0.95

Significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.96$

Substitute the values in the given formula , we get

$E=(1.96)\sqrt{\dfrac{0.2(1-0.2)}{330}}\\\\\Rightarrow\ E=0.043157779593\approx0.0432$

Hence, the margin of error for the confidence interval for the population proportion with a 95% confidence level. = 0.0432

6 0

3 years ago

I dont have brain cells :/

Aleks04 [339]

Answer:

the answer would be 2.

Step-by-step explanation:

(9 - (3 / (1/3)) plus 2 equals 2

Hope this helps!

Good luck

8 0

4 years ago

Read 2 more answers