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3 years ago

Select all solutions for the equation (3x + 5)(2x + 8) = 0

Mathematics

1 answer:

Neko [114]3 years ago

7 0

Answer:

x=-1.67 or x=-4

Step-by-step explanation:

3x+5=0 and 2x+8=0

3x=0-5 2x=-8,,,divide both sides by 2, the two's cancel then x=-4

3x=5 Divide by 3 to hve x on one side,,, thus the answer is -5÷3=1.666...

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Find the scale factor of a cube with volume 216 ft^3 to a cube with volume 1000 ft^3.

Bad White [126]

Answer:

Scale factor of cube to the smaller cube is 5 : 3.

Step-by-step explanation:

Ratio of the volumes of two cubes = $\frac{\text{volume of large prism}}{\text{Volume of small prism}}$

= $\frac{1000}{216}$

= $\frac{125}{27}$

Scale factor of these cubes = $\sqrt[3]{\text{ratio of the volumes of the cubes}}$

= $\sqrt[3]{\frac{\text{volume of large prism}}{\text{Volume of small prism}}}$

= $\sqrt[3]{\frac{125}{27} }$

= $\frac{5}{3}$

= 5 : 3

Therefore, scale factor of cube to the smaller cube is 5 : 3.

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kirill115 [55]

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3 years ago

Henry packed some apples in a box. The total mass of the box and the apples was 16 240 g. He packed some strawberries in a simil

icang [17]

Step-by-step explanation:

x = mass of apples

y = mass of strawberries

z = mass of the box

x = 3y

x + z = 16240

y + z = 6350

let's subtract the second from the first equation

x + z = 16240

- y + z = 6350

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x - y + 0 = 9890

using the first identity in that result gives us

3y - y = 9890

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y = 4,945 g

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Stella [2.4K]

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Read 2 more answers

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elixir [45]

Answer:

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Step-by-step explanation:

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3 years ago