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Ostrovityanka [42]
2 years ago
6

Select the pair(s) of ratios that form a proportion.

Mathematics
1 answer:
ryzh [129]2 years ago
5 0

Answer:

C is the only choice that forms a proportion

Step-by-step explanation:

a. 24/31, 20/27

(31 is prime)

b. 8/9, 24/36

(this one doesn't work since it would have to be 3/4) which isn't a proportion

c. 16/5, 64/20

(both 16/5  *4 = 64/20) so it works

d. 6/4 , 15/10

(similar situation to choice b the ratio wont work since 6 doesn't go into 15)

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Write 0.0007654 * 10^0 in scientific notation, then state the order of magnitude for it.
Bas_tet [7]

remember that to put a number in scientific notation is necessary to have the first digit of the number different to 0, so

0.0007654\cdot10^0=7.654\cdot10^{-4}

to calculate the order of magnitude, if the number is greater than 3.16, we assume it as a 10, so in this case as 7.654 > 3.16 we get that the order is

10\cdot10^{-4}=10^{-3}

So the order is 10^-3

5 0
1 year ago
What is the smallest number divisible by 10,15,20? and how?
Westkost [7]

Answer:

2

Step-by-step explanation:


3 0
3 years ago
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Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.
AnnZ [28]

Answer:

I am stuck on this problem too. Is it on eacxt path.

Step-by-step explanation:

7 0
3 years ago
Solve for b2 in A = 1/2 h ( b1 + b2 ), if A = 16, h = 4, and b1 = 3.
Katarina [22]

Hello from MrBillDoesMath!

Answer:

b2 = 5  


Discussion:

A = 1/2 h (b1 + b2) .

Substituting A = 16, h = 4, and b1=3 in the above formula gives:

16 = (1/2) (4)( 3 + b2)    =>         (as (1/2)4 = 2) )

16 = 2 ( 3 + b2)             =>         (divide both sides by 2)

8 = (3 + b2)                   =>         (subtract 3 from both sides)

8-3  = b2                       =>

5     =  b2


Check Area formula:

Does A = 16 = (1/2)(4)(3+5)   ?

Does 16 = (1/2) (4)(8)             ?

Does 16 = (1/2)(32)                ?  Yes it does so our calculation for b2 is correct




Thank you,

MrB

7 0
3 years ago
A national grocery store chain designed a study to determine whether its customers would be interested in home delivery. The cha
SashulF [63]
The parameter of the study's population is the 80% of all customers who shopped in the chain's stores that were interested in the home delivery service.

Population parameter is defined as any summary number that describes the entire population. It can be an average or a percentage/

The 1,000 customers that were surveyed are the sample of the population. They basically represent the population of the chain's customers. 
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3 years ago
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