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3 years ago

Little bit confused

Mathematics

2 answers:

Virty [35]3 years ago

7 0

Answer:

50,000,000.

Step-by-step explanation:

It's 5 followed by 7 zero digits.

MakcuM [25]3 years ago

6 0

Answer:

50,000,000

Step-by-step explanation:

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Find the value of a and b<br><br> a^2 + b^2 = 400

Oliga [24]

Answer:

Step-by-step explanation:

a^2+b^2=400

a^2=400-b^2

a=sqrt(400-b^2) & -sqrt(400-b^2)

-----------------------------------------------

b^2=400-a^2

b=sqrt(400-a^2) & -sqrt(400-a^2)

7 0

4 years ago

Read 2 more answers

a cylinder has a volume of 24 cubic centimeters. The height of a cone with the same radius is two times the height of the cylind

Anastaziya [24]

Answer:

<h2>Volume of the cone is 16 cm³</h2>

Step-by-step explanation:

<h3 /><h3>We know that the volume of the cylinder is 24 cm³</h3><h3 /><h3>The formula for this cylinder is 24 = πr²h</h3><h3 /><h3>The cone has the same radius, but it's height is twice that of the cone, so the formula for the volume of the cone is</h3><h3 /><h3>V = (1/3)πr²(2h) it's 2h because it's height is twice the</h3><h3> height of the cylinder</h3><h3 /><h3>We can rewrite the equation using the associative rule of multiplication...</h3><h3 /><h3>V = (2/3)(πr²h)</h3><h3 /><h3>We know from the formula for the cylinder that πr²h = 24 cm³, so substitute that in...</h3><h3 /><h3>V = (2/3)(24 cm³)</h3><h3 /><h3>Now simplify...</h3><h3 /><h3>V = 16 cm³</h3>

5 0

3 years ago

Solve using the quadratic formula. <br><br> 2x2=8x-7

Ierofanga [76]

Answer:

$\boxed{x=\frac{4\pm\sqrt{2}}{2}}$

Step-by-step explanation:

Part 1: Rewriting equation to match ax² + bx + c = 0 (quadratic function)

The given equation is not written in quadratic form. To rewrite the equation:

All values need to be on the left side of the equation and set equal to zero.

To overcome this difficulty, follow these mathematical steps:

$2x^2=8x-7\\2x^2-8x=-7\\2x^2-8x+7=0$

Subtract <em>8x </em>from both sides of the equation to rearrange it to the left side. Then, add 7 to rearrange it as well. Finally, set the three values on the left of the equation equal to zero.

Part 2: Using the quadratic formula

The quadratic formula is defined as $\boxed{x=\frac{-b\pm\sqrt{b^2-4ac} }{2a} }$ .

Using the parent quadratic function, the values are easy to find in the given equation. $\boxed{a=2, b=-8, c=7}$

Substitute these values into the quadratic formula and solve for <em>x</em>.

$x=\frac{8\pm\sqrt{(-8)^2-4(2)(7)}}{2(2)} \\\\x=\frac{8\pm\sqrt{64-4(14)}}{4}\\\\x=\frac{8\pm\sqrt{64-56}}{4} \\\\x=\frac{8\pm\sqrt{8}}{4}\\\\x= 2\pm\frac{\sqrt{8}}{4}\\ \\x=2\pm\frac{\sqrt{2}}{2}$