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AnnyKZ [126]
3 years ago
6

6. At Louis Armstrong School, Ms. Turini's

Mathematics
1 answer:
34kurt3 years ago
7 0
A. 3:2
b. 2:3
c. 3:5
d. 5:3

My answers are simplified
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if a rectangle's length is 2 x − 1 and the width is 4 x − 2 , write an expression for the perimeter and an expression for the ar
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Answer:

Step-by-step explanation:

2p/2 = 2x+7

1) 2x+7 -x - 5 =

width = x + 2

2) 2p/2 = 21 in

x + 5 + x + 2 = 21

2x = 14

x = 7

lenght = 7 + 5 = 12 in

width = 7 + 2 = 9 in

3 )

A = (x+5)(x+2)

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2 years ago
Students get a 15% discount off the original prices at the Everything Fluorescent store during its back to school sale. Find the
spayn [35]
The discount is $1.19 unless you have to round up than it is $1.20. in order to solve this problem you would set up a proportion. So your proportion would be x over 7.99 = 15 over 100. Than you would cross multiply. 7.99*15=119.85. and 100*x=100x. than u divided both sides by a 100. than x= 1.19. which 1.19 is the discount. 
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3 years ago
A dairy scientist is testing a new feed additive. She chooses 13 cows at random from a large population of cows. She randomly as
mina [271]

Answer:

Step-by-step explanation:

Given that a dairy scientist is testing a new feed additive. She chooses 13 cows at random from a large population of cows. She randomly assigns nold = 8 to get the old diet, and nnew = 5 to get the new diet including the additive.

From the data given we get the following

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Sample   1    8           43       5.1824 1.832

Sample   2   5           73     21.0832 9.429

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a) Yes the two are independent.  The two sets of cows randomly chosen are definitely independent. Paired means equal number should be there and homogeneous conditions should be maintained.

b) Enclosed

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d) Test statistic= -3.1233

(because of unequal variances we use that method)

95% confidence interval =  ( -56.6676 , -3.3324 )

p value <0.05 our alpha

So reject null hypothesis.

The two means are statistically significantly different.

3 0
3 years ago
The length of a rectangle is x-2. It's area is 2x-4. What is a simplified expression for the width?​
NNADVOKAT [17]

Answer:

3x-6

Step-by-step explanation:

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3 years ago
. What is the total cost of 6 books at N8.50k each?​
Sati [7]

Answer:

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