Ask question

Ask question

All categories

2 years ago

10

Nico wanted to determine the number of students in his school who buy school lunch.he walked around the cafeteria one lunch peri

od looking to see whether every fifth person in the cafeteria purchased lunch or brought their own.which method did he use to collect his data

1 answer:

pashok25 [27]2 years ago

4 0

Answer:

Observational study

Step-by-step explanation:

You might be interested in

An animal shelter spends $1.00 per day to care for each cat and $8.00 per day to care for each dog. Mackenzie noticed that the s

attashe74 [19]

Answer:

There are 24 cats at the shelter on Wednesday.

Step-by-step explanation:

Since we have given that

Cost of an animal shelter per day to care for each cat =$1.00

Cost of an animal shelter per day to care for each dog = $4.50

Let number of cats be c

Let number of dogs be d

According to question,

We will use "Substitution Method ",

Put in the second equation :

so, Number of dogs = 25

and

Hence, Number of cats is 24.

Read more on Brainly.com - brainly.com/question/11637006#readmore

7 0

2 years ago

Read 2 more answers

Please help: Find the volume of the solid. Use 3.14 for π.

kenny6666 [7]

Answer:

3391.2

Step-by-step explanation:

The formula for the volume of a cylinder is

pi * r^2 * h

Plugging the values in we get

3.14 * 6^2 * 30

= 3.14 * 36 * 30

= 3391.2

6 0

3 years ago

If f(x) = 4x 6 and g(x) = x + 2,<br> what is (fºg)(7)?

laiz [17]

Step-by-step explanation:

(f○g)(7)

= f(g(7))

g(7) = 7 + 2

= 9

f(9) = 4(9) .....

......

3 0

3 years ago

Directed line segment DE has endpoints D(-4,-2) and E(1,8). Point F divides DE such that DF:FE is 3:2What are the coordinates of

VMariaS [17]

The Solution.

The given points are

$D(-4,-2)\text{ and E(1,8)}$

The formula is

$\frac{mx_2+nx_1}{m+n}_{},\frac{my_2+ny_1}{m+n}$

In this case,

$m=3,n=2$

Therefore,

$\begin{gathered} (\frac{mx_2+nx_1}{m+n}_{},\frac{my_2+ny_1}{m+n}) \\ =(\frac{3(1)+_{}2(-4)_{}}{3+2}_{},\frac{3(8)_{}+2(-2)_{}}{3+2}) \\ \end{gathered}$ $=(\frac{3-8}{5},\frac{24-4}{5})=(-\frac{5}{5},\frac{20}{5})$ $=(-1,4)$

Hence, the correct answer is (-1, 4) (option 3)

3 0

9 months ago

Determine if x - 2 is a factor of p(x) = x4 - 3x2 + 2x - 8, and explain why.

Natali [406]

<u>Answer:</u>

If x-2 is a factor of p(x) = x^{4} - 3 x^{2} + 2 x - 8 ,then p(x) = 0

<u>Solution:</u>

According to factor theorem of polynomials,

x-a is a factor of polynomial p(x), if and only p(a)=0

<u>Step 1:</u>

Since x-2 is factor of p(x),

x - 2 = 0

x = 2

<u>Step 2:</u>

$p(x) = x^{4} - 3 x^{2} + 2 x - 8 ------ (equation 1)$

By substituting x = 2 in equation 1,

$p(x) = 2^{4} - 3(2)^{2} + 2(2) - 8$

p(x) = 16 - 3(4 ) + 4 -8

p(x) = 16 - 12 - 4

p(x) = 16 - 16

p(x) = 0

Since x - 2 is a factor of p(x) , we get p(x)=0

7 0

3 years ago