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2 years ago

What is the greatest common factor of 90 and 15

2 answers:

8 0

The greatest common factor is the highest number that divides exactly into two or more numbers.

15: 1, 3, 5, 15 

90: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90 

The GCF for 15 and 90 is 15.

Leviafan [203]2 years ago

7 0

$90: \ 30, \ 6 
 \\ 15: \ 5, \ 1
 \\ 3 \ x \ 5 \ = \ 15
 \\ GCF: \ 15

$

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If town A had 35 people, 12 left, 13 joined, 39 joined, 25 got killed, how many people were there left?

Makovka662 [10]

Answer:

Step-by-step explanation:

35 - 12 + 13 + 39 - 25 = 50

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2 years ago

A major car dealership has several stores in a big city. The owner wants to determine if there is a difference in the proportion

Gemiola [76]

Answer:

confidence interval = ( -0.38 , 0.08 )

Step-by-step explanation:

Given data :

n1 = 55 , n2 = 60 ,

Let P1 ( proportion of SUV sales at store A ) = 30 / 55 = 0.55

P2 ( sample proportion of SUV sales at store B ) = 42/60 = 0.70

The Z-value at 99% confidence Interval = 2.58

Determine the 99% confidence interval for difference in proportion

applying the formula below

( P1 - P2 ) ± Z ( $\sqrt{p1( 1-p1)/n1 + p2(1-p2)/n2}$

Input values above into equation

confidence interval = ( -0.38 , 0.08 )

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3 years ago

A 16- ounce bottle of fresh water is $1.76. A 20-ounce bottle of spring water is $2.40. Which statement about the unit price is

PSYCHO15rus [73]

To find the unit price of each item you want to divide:

Fresh water:

$1.76 / 16 = $0.11

Spring water:

$2.40 / 20 = $0.12

So the statement that is true is B) Fresh water has a lower unit price of $0.11/ounce.

Hope this Helps!!

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3 years ago

5/7+(-1/3)-(-1/2) Show work pls

ELEN [110]

30/42-14/42+21/42= 37/42

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3 years ago

If u = 8 + 4i and v = 3i + 6, then what is u – v?

lozanna [386]

$u=8+4i\ and\ v=31+6\\\\u-v=(8+4i)-(3i+6)=8+4i-3i-6=(8-6)+(4i-3i)\\\\\huge\boxed{=2+i}\leftarrow \boxed{d}$

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3 years ago