3 years ago

2+2 Help please i really need it

Mathematics

2 answers:

Dafna11 [192]3 years ago

3 0

Answer: 4

Step-by-step explanation:

babunello [35]3 years ago

3 0

4 I’m only answering this so I can ask a question

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I need help find the volume of the composite solid use 3.14 for pi

Evgen [1.6K]

Answer:

$222.312\:\mathrm{in^3}$

Step-by-step explanation:

The composite solid consists of a cylinder and a cone. Therefore, its total volume will be the sum of the volumes of the cylinder and cone:

Volume of the cone: $\frac{1}{3}\cdot 2^2\cdot 3.14\cdot 8.1 =33.912$

Volume of the cylinder: $2^2\cdot 3.14 \cdot 15=188.4$

Thus, the total volume of the solid is:

$33.912+188.4=\boxed{222.312\:\mathrm{in^3}}$

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3 years ago

Solve for all values of x by factoring.<br> x^2 + 4x – 30 = -3x

vichka [17]

Answer:

${x}^{2} + 4x - 30 = - 3x \\{x}^{2} + 7x - 30 = 0 \\ {x}^{2} - 3x + 10x - 30 = 0 \\ x(x - 3) + 10(x - 3) = 0 \\ (x - 3)(x + 10) = 0 \\ \boxed{x = 3} \\ \boxed{x = - 10}$

<h3><em><u>x=3 or x=-10</u></em> is the right answer.</h3>

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3 years ago

Steven wants to buy a $530 bicycle. Steven has no money saved, but will be able to deposit $35 into a

xxTIMURxx [149]

17 weeks of deposits will pay for his bike and his sister

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3 years ago

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Barry made a model to show multiplication of a fraction by a fraction. What multiplication sentence does the model represent?

artcher [175]

Im guessing 12 over 15

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4 years ago

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Factor completely 6x^3-23x^2+20x

Westkost [7]

Answer:

$x[2x - 5][3x - 4]$

Step-by-step explanation:

$6x^3 - 23x^2 + 20x \\ x[6x^2 - 23x + 20] \\ \\ [x][6x^2 - 8x] - [15x + 20] \\ \\ [x]2x[3x - 4] \: -5[3x - 4] \\ \\ x[2x - 5][3x - 4]$

I am joyous to assist you anytime.

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3 years ago