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2 years ago

30% of which number is 3?

Mathematics

2 answers:

Nutka1998 [239]2 years ago

4 0

Answer:

Step-by-step explanation:

30/100*x=3

Multiply both sides by 100 and divide both by 30

You get the answer x=10

enyata [817]2 years ago

4 0

Answer:

Step-by-step explanation:

DO this 3x100/30 and you get 10

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Y=-3x+5 5x-4y=-3 Trying to solve this problem

rodikova [14]

Your answer would be y= 5x/-4 - 3/-4 because you’ll move 5x to the other side of the equal sign then divide -4 to get y by itself

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2 years ago

PLEASE HELP!! Dee bought 6 dolls and 2 toy trains for $55. At the same prices, Joy bought 4 dolls and 7 toy trains for $65. What

GuDViN [60]

Answer:

The cost of 1 doll = $ 7.5

and The Cost of 1 toy train = $ 5

Step-by-step explanation:

Let the price of 1 doll = $ x

The price of 1 toy train = $ y

Now, according to the question:

6 x + 2 y = $ 55

and 4 x + 7 y = $ 65

Solving the given system of equation,

From (1), we get

$x= \frac{55 - 2y}{6}$

$4 ({\frac{55 - 2y}{6}} ) + 7y = 65$

or, solving for y , we get

110y - 4y + 21 y = 195

or, 17 y = 85

⇒ y= 85/17 = 5

This implies : 6 x + 2 (5) =55

or, 6x = 55 - 10 = 45

or, x = 45/ 6 = 15/2

Hence, the cost of 1 doll = x = $ 7.5

and the Cost of 1 toy train = y = $ 5

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2 years ago

17 - 19 please and thank you!

Nataly [62]

The answer and equation is 17 - 19 = -2

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3 years ago

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Convert 12°34'56” to decimal degree form. Round your answer to four decimal places.

Vlada [557]

Answer:

12.57555 rounded to 12.5756

Step-by-step explanation:

34'=34*1/60=0.56°

56''=56/1/3600=0.01555°

12°+0.56°+0.01555°=12.57555°

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3 years ago

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blondinia [14]

Look at the attached picture ⤴

Hope it will help u...

✴Have a great day✴✴

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