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kolezko [41]
3 years ago
8

Lexi sent 1 piece of mail in March, 5 pieces of mail in April, 25 pieces of mail in May, and 125 pieces of mail in June. If this

pattern continues, how many pieces of mail will Lexi send in July?
Mathematics
1 answer:
Artemon [7]3 years ago
7 0

Answer:

Lexi would send 625 in July.

Hope this helps!

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This one isn’t really that hard. the answer is 24.
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$35,200 at 2% for 2 years
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Answer:

Um 1408

Step-by-step explanation:

2% of 35,200 is 704 and 304*2= 1408

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Linda buys a packet of biscuits, there were p biscuits in it. She eats y of them and gave the rest to her friend. How many biscu
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2 years ago
In order to estimate the difference between the average hourly wages of employees of two branches of a department store, two ind
liberstina [14]

Answer:

Step-by-step explanation:

Hello!

You have two populations of interest and want to compare them. If you define the study variables as:

X₁: average hourly wages of an employee of the Downtown store.

n₁= 25

X[bar]₁= $9

S₁= $2

X₂: average hourly wages of an employee of the North Mall store.

n₂= 20

X[bar]₂= $8

S₂= $1

Both samples taken are independent, assuming that both populations are normal and that their population variances are equal I'll use the Student's-t statistic with a pooled sample variance to calculate the Confidence interval:

95% CI for μ₁ - μ₂

(X[bar]₁-X[bar]₂) ± t_{n_1+n_2-2; 1-\alpha /2} * (Sa*\sqrt{\frac{1}{n_1} +\frac{1}{n_2} } )

Sa^2= \frac{(n_1-1)S_1^2+(n_2-1)S_2^2}{n_1+n_2-2}

Sa^2= \frac{24*4+19*1}{25+20-2}= 2.67

Sa= 1.64

t_{n_1-n_2-2;1-\alpha /2} = t_{43; 0.975} = 2.017

(9-8)±2.017*(1.64*\sqrt{\frac{1}{25} +\frac{1}{20} } )

[0.007636;1.9923]

I hope it helps!

6 0
2 years ago
If the rule of the function is "multiply by 2 then add 3" and the input value is -2, what is the output value?
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The equation would be 2x+3 so when you plug it in it's 2(-2)+3 which simplify to -4+3 which is -1
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3 years ago
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