All categories

3 years ago

CAN SOMEONE HELP ME PLEASE ?

Mathematics

2 answers:

Phoenix [80]3 years ago

8 0

First sequence is Arithmetic because the common difference is 4.

Second sequence is Geometric because it is multiplied by -2 each time.

Hope this helps :)

DENIUS [597]3 years ago

5 0

19, yes, 4
16, yes, -2
.....................

You might be interested in

WHO WANT TO DOYHIS FOR 89 POINTS...ASAP!!!PLEASEEEASAP!!

hoa [83]

Answer:

Step-by-step explanation:

A)1st pair: ∠HKJ ,∠JKG 2nd pair: ∠HKE,∠EKF

B)Verticle angle:∠HKE and ∠GKF

C) 4x+5+41=180

4x+46=180

4x=134

x=33.5

D)4x+36=90

4x=90-36

4x=54

x=13.5

E) x+x-4=180

2x=184

x=92

5 0

3 years ago

We are studying the proportion of cities that have private garbage collector. We want a maximum error of 0.10 and a 95% confiden

True [87]

Answer:

The minimum number of cities we need to contact is 96.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence interval $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

Z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

95% confidence interval

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

In this problem, we have that:

$p = 0.5, M = 0.1$

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.1 = 1.96*\sqrt{\frac{0.5*0.5}{n}}$

$0.1\sqrt{n} = 0.98$

$\sqrt{n} = 9.8$

$(\sqrt{n})^{2} = (9.8)^{2}$

$n = 96$

The minimum number of cities we need to contact is 96.

8 0

3 years ago

Solve for x.<br><br> x+23=−22<br><br> someone help

BaLLatris [955]

Answer:

x = - 45

Step-by-step explanation:

x+23(-23)=−22 (-23)First subtract 23 from both sides

x = - 45

7 0

3 years ago

What is the product in simplest form x^2+9x+18/x+2 times x^2-3x-10/x^2+2x-24

german

$\dfrac{x^2+9x+18}{x+2}\cdot\dfrac{x^2-3x-10}{x^2+2x-24}=\dfrac{x^2+6x+3x+18}{x+2}\cdot\dfrac{x^2-5x+2x-10}{x^2+6x-4x-24}\\\\=\dfrac{x(x+6)+3(x+6)}{x+2}\cdot\dfrac{x(x-5)+2(x-5)}{x(x+6)-4(x+6)}$

$=\dfrac{(x+6)(x+3)}{x+2}\cdot\dfrac{(x-5)(x+2)}{(x+6)(x-4)}=\dfrac{(x+3)(x-5)}{x-4}\\\\=\dfrac{x^2-5x+3x-15}{x-4}=\dfrac{x^2-2x-15}{x-4}$

5 0

3 years ago

Read 2 more answers

Last year, of business owners gave a holiday gift to their employees. A survey of business owners conducted this year indicates

IRINA_888 [86]

It would be 4 business owners will gift their employees

4 0

2 years ago