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Maksim231197 [3]
2 years ago
15

How do i solve this proportion? 3t/10 = 1/2

Mathematics
1 answer:
never [62]2 years ago
5 0

Answer:

Multiply both sides of the equation

Step-by-step explanation:

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The number of a two dollar bill i need to pay for a purchase is 9 more than the number of 5 dollar bills i need to pay for the s
melisa1 [442]

Answer:

$60

Step-by-step explanation:

Let's say we need t $2 bills and v $5 bills.

We need 9 more $2 bills than $5 bills, so:

t = 9 + v

We also know that the amount of money in t $2 bills is 2 * t = 2t. The amount of money in v + 9 $5 bills is 5 * (v + 9) = 5v + 45. These amounts are equal:

5v + 45 = 2t

Plug v + 9 in for t in 5v = 2t + 18:

5v = 2t + 18

5v = 2 * (9 + v) + 18

5v = 18 + 2v + 18

3v = 36

v = 12

We have 12 $5 bills, so that total cost is 12 * 5 = $60.

<em>~ an aesthetics lover</em>

5 0
3 years ago
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makvit [3.9K]
The answer is A)$25.60
7 0
3 years ago
State the domain of d.
tester [92]

d(x) = { (x,y): y = sqrt(x) and y >=0 }

since sqrt function requires x to be >=0 so

<u>x >= 0</u>

4 0
3 years ago
Read 2 more answers
What is the distance between p(-300, 200) and Q(500, 400)?
alina1380 [7]

Answer:

200 √17

Step-by-step explanation:

distance between two points (x,y) and (x',y')

D² = (x' - x)² + (y' - y)²

D² = (500 - (-300))² + (400 - 200)² = 640000 + 40000 = 680000

D = √680000 = √4 x 17 x 10000 = 200 √17

7 0
3 years ago
Rewrite each linear expression by factoring out the greatest common factor. (please solve each question)
ohaa [14]

Answer:

-5(y + 7).

Step-by-step explanation:

GCF= -5.

7 0
3 years ago
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