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REY [17]
3 years ago
15

Solve the proportion 35/30 = 28/? A. 48 B. 23 C. 24 D. 46

Mathematics
1 answer:
koban [17]3 years ago
6 0

Answer:

C. 24

Step-by-step explanation:

by algebra:

let "?" be x

35/30 = 28 / x   (multiply both sides by 30)

35 = (28/x) (30)   (multiply both sides by x)

35x = (28)(30)

35x = 840  (divide both sides by 35)

x = 840 / 35

x = 24

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the ratio of cars to trucks in the parking lot is 3:5. If there are 360 vehicles in the parking lot how many are trucks
chubhunter [2.5K]

Step-by-step explanation:

cars : trucks = 3 : 5

there are 3 + 5 = 8 parts of the whole that is shared between cars and trucks.

these 8 parts (or the whole) are in total 360.

therefore, 1 part = 360/8 = 45

cars get 3 parts of the whole parking lot, that is

45 × 3 = 135 cars

trucks get 5 parts of the whole parking lot, that is

45 × 5 = 225 trucks

6 0
3 years ago
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Nutka1998 [239]
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4 0
3 years ago
1. If Sarah starts with $10 and spends all but $3, how much money does she have left?​
fiasKO [112]
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8 0
4 years ago
For the following geometric sequence, find the recursive formula.
igor_vitrenko [27]

Answer:

a_{n}=-\frac{1}{4}(a_{n-1})

Step-by-step explanation:

To find recursive formula in a geometric sequence, you need to first find the common ratio, 'r', between the numbers in the given data set.  From the data set given, it appears that the previous number is multiplied by -\frac{1}{4} so, r = -\frac{1}{4}.

Recursive formula involves two other variables:

a_{n}= the n^{th} term in the sequence

a_{n-1}=the term before the n^{th} term

So, the final formula is:  a_{n}=-\frac{1}{4}(a_{n-1})

4 0
3 years ago
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dezoksy [38]

Answer:

Answer is C took this test last week

7 0
4 years ago
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