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Svetlanka [38]
2 years ago
12

The ratio of the number of dolls Jacky had to the number of dolls Peter had was 5:2 but, after Jacky gave 15 dolls to Peter, the

y have an equal number of dolls. How many dolls did they have altogether?​
Mathematics
2 answers:
Sidana [21]2 years ago
5 0

Answer:

70

Step-by-step explanation:

I am good yeet

sleet_krkn [62]2 years ago
4 0

Answer:

70 dolls

Step-by-step explanation:

Hello!

The ratio is 5:2, which are division of  a whole. They can be represented as 5x and 2x.

Jacky has 5x dolls, and Peter has 2x dolls. They were equal after subtracting 15 dolls from 5x and adding them to 2x.

Equation:

  • 5x - 15 = 2x + 15

Solve:

  • 5x - 15 = 2x + 15
  • 5x - 30 = 2x
  • 5x = 2x + 30
  • 3x = 30
  • x = 10

So Jacky has 5(10) dolls, or 50 dolls, and Peter has 2(10) or 20 dolls.

The total sum is 70 dolls.

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3 * z

Step-by-step explanation:

3 * z

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6 0
3 years ago
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A fish tank with a rectangular base has a volume of 3360 cubic inches. the length of the tank is 14 inches and the width is 12 i
Alenkasestr [34]

water  the tank will hold = 14.583 gallons

<h3>What is cuboid ?</h3>
  • A cuboid is a three-dimensional or solid shape.
  • A cuboid is a convex polyhedron that has six rectangular faces, eight vertices, and twelve edges.
  • Another name for a cuboid is a rectangular prism. A cube is a cuboid with six square faces.
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Given : A fish tank  has a volume = 3360 cubic Inches.

        The length of the tank is =14 inches

                             the width is  = 12 inches.

         The height of the tank is = 20 inches.

           If one fluid ounce is = 1.8 cubic inches

Volume of tank = 14 * 12 * 20  =  3360 cubic inches

1.8 cubic inches   =  one fluid ounce

3360 cubic inches   =  3360/1.8   fluid ounce

= 5600/3    fluid ounce

As we know,

                  1 gallons  = 128   fluid ounces

water  the tank will hold    =(  5600/3 ) / 128

                                           = 175 / 1 = 14.583 gallons

Therefore, water  the tank will hold  = 14.583 gallons

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2 years ago
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Jalil mixed 3/8 cup of sugar with 1 5/6 of water. How many more cups of water than sugar did he use in his mixture?
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If f(x) = 4x-3, which of the following is the inverse of f(x)?
GalinKa [24]

Answer:

\huge\boxed{f^{-1}(x)=\dfrac{x+3}{4}=\dfrac{1}{4}x+\dfrac{3}{4}}

Step-by-step explanation:

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