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3 years ago

FOR BRAINLIEST ANSWER AND 20 POINTS!!! who can do this question

Mathematics

1 answer:

earnstyle [38]3 years ago

5 0

Answer:

Flags are one of the simplest yet most powerful pieces of design ever conceived.

Step-by-step explanation:

They can make us swell with pride, burn with hatred — and even inspire people to die or kill in their name, says vexillologist Michael Green. Take a brief walk through history as Green explores the symbolic fervor behind flags that unify and divide, inviting us to imagine a future where we can come together under one collective identity: humanity.

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There are eight furlongs in a mile and two weeks in a fortnight. if i travel 2800 furlongs in a fortnight, how many miles per da

yaroslaw [1]

The answer is 25 miles per day.

one mile = 8 furlongs
fortnight = 2 weeks = 14 days
convert furlongs to miles;
2800/8 = 350 miles
it means you travel 350 miles in 14 days
miles per day = 350/14 = 25
Thus, you travel 25 miles per day.

3 0

3 years ago

The brand manager for a brand toothpaste must plan a campaign designed to increase brand recognition. He wants to first determin

bulgar [2K]

We need to find out how many adults must the brand manager survey in order to be 90% confident that his estimate is within five percentage points of the true population percentage.

From the given data we know that our confidence level is 90%. From Standard Normal Table we know that the critical level at 90% confidence level is 1.645. In other words, $Z_{Critical}=1.645$ .

We also know that E=5% or E=0.05

Also, since, $\hat{p}$ is not given, we will assume that $\hat{p}$ =0.5. This is because, the formula that we use will have $\hat{p}(1-\hat{p})$ in the expression and that will be maximum only when $\hat{p}$ =0.5. (For any other value of $\hat{p}$ , we will get a value less than 0.25. For example if, $\hat{p}$ is 0.4, then $1-\hat{p}=0.6$ and thus, $\hat{p}(1-\hat{p})=0.24$ .).

We will now use the formula

$n=(\frac{Z_{Critical}}{E})^2\hat{p}(1-\hat{p})$

We will now substitute all the data that we have and we will get

$n=(\frac{1.645}{0.05})^2\times0.5(1-0.5)$

$n=(32.9)^2\times0.25$

$n=270.6025$

which can approximated to n=271.

So, the brand manager needs a sample size of 271

3 0

3 years ago

A retangular athletic field is twice as long as it is wide. If the perimeter of the athletic field is 180 yards, what are its di

pishuonlain [190]

W= width
l= 2w= length

Perimeter of a Rectangle Formula
P= 2(l + w)
substitute 2w for l in equation

180= 2(2w + w)
multiply 2 by parentheses

180= 4w + 2w
combine like terms

180= 6w
divide both sides by 6

30 yards= w

LENGTH
2w= 2(30)= 60 yards

CHECK:
180= 30 + 60 + 30 + 60
180= 90 + 90
180= 180

ANSWER: the width is 30 yards and the length is 60 yards

Hope this helps! :)

5 0

3 years ago

G.SRT.B.5 Worksheet #2

Yanka [14]

B): x=8, y=8root2, z=16
c): x=4, y=12, z=8root3
The ones later one you can do by your self.
30 60 90 triangle side ratio: 1:root3:2
90 45 45 triangle side ratio: 1:1:root2

4 0

2 years ago

kim has 18 toys.1/3 of the toys are teddy bears.1/6 of the toys are balls and the rest are dolls.How many dolls does Kim have

Korvikt [17]

D represents dolls

1/3×18+1/6×18+d=18

18/3+18/6+d=18

6+3+d=18
9+d=18

d=18-9
d=9

7 0

3 years ago