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olya-2409 [2.1K]
3 years ago
13

HELP HELP HELP PLEASE

Mathematics
1 answer:
defon3 years ago
3 0

Answer:

Put your dot on 7/4 and then then -1 means you will go left 1 time and down 1 time 1 left 1 down it should look like a staircase

Step-by-step explanation:

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HELP PLEASE<br> What is M CEA?
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2 years ago
EASYY TO ANSWER I WILL MARK YOU AS BRILIANT HELP PLEASE
BARSIC [14]

Question 1: (0,2) because b value in mx+b is y-intercept


Question 2: plug in 4 for x you will get 1 so max is (4, 1)


Question 3: plug in -4 for x you will get -5 so min is (-4, -5)


Hope it helps :D

7 0
3 years ago
Which figure could be the result of dilating this rectangle with a scale factor between 0 and 1?
navik [9.2K]

Answer:

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7 0
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
3 years ago
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