3 years ago

I Need Help Fast Please

Mathematics

1 answer:

lbvjy [14]3 years ago

4 0

C. 130,90,130.

#01234, the tenths number stays the same
#56789, the tenths number go up 1 number

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600:450 and 4:3 why is it equivalant

alexira [117]

Answer:

600 ÷ 4 = 150

450 ÷ 3 = 150

The same thing either way.

They are considered proportional ratios

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2 years ago

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A customer wants to purchase a pair of shoes that cost $45 and the state sales tax is 7%.

Rasek [7]

Answer:

$22.84

Step-by-step explanation:

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A local Elementary School has 560 students. A Random Sample of 50

Komok [63]

Well since there was 560 students the it was 560/560. now that 50 got selected the total portion would be 560/6

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3 years ago

A boy bought 9 new cards to add to his card collection of 25 cards. The next day his dog ate half of his collection. How many ca

lora16 [44]

This would equal (9+25)/2

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3 years ago

A job candidate at a large job fair can be classified as unacceptable, provisional, or acceptable. Based on past experience, a h

svp [43]

Answer:

chisquare = 31.667

degree of freedom = 2

Step-by-step explanation:

Formula for chisquare test = (O-E)²/E

total number observations= 60 + 25 + 15 = 100

Estimated E,

80% x 100 = 80

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chisquare =

$\frac{(60-80)^{2} }{80} +\frac{(25-15)^{2} }{15}+\frac{(15-5)^{2} }{5}\\$

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the degree of freedom is the number of samples in the test n - 1

= 3-1

= 2

I have solve this question also in a tabular form to aid understanding in the file i uploaded.

thank you and good luck!

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3 years ago