3 years ago

Solve for x:

Mathematics

1 answer:

Kamila [148]3 years ago

3 0

-5
It’s c because your solving for x

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Geometry number 11 only need help on

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Answer:

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Step-by-step explanation:

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Help Plz!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Place your dot roughly around 2.23. The square root of 5 is 2.23

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3 years ago

Which are the roots of the quadratic function f(b) = 62 – 75? Select two options.

elena55 [62]

Answer:

$b = 5 \sqrt{3} \ or\ b = -5 \sqrt{3}$

Step-by-step explanation:

Given

$f(b) = b^2 - 75$

Required

Determine the roots

To get the root of the function, then f(b) must be 0;

i.e. f(b) = 0

So, the expression becomes

$0 = b^2 - 75$

Add 75 to both sides

$75 + 0 = b^2 - 75 + 75$

$75 = b^2$

Take square roots of both sides

$\sqrt{75} = \sqrt{b^2}$

$\sqrt{75} = b$

Reorder

$b = \sqrt{75}$

Expand 75 as a product of 25 and 3

$b = \sqrt{25*3}$

Split the expression

$b = \sqrt{25} *\sqrt{3}$

$b = \±5 *\sqrt{3}$

$b = \±5 \sqrt{3}$

$b = 5 \sqrt{3} \ or\ b = -5 \sqrt{3}$

The options are not clear enough; however the roots of the equation are $b = 5 \sqrt{3} \ or\ b = -5 \sqrt{3}$

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3 years ago

In the diagram, point O is the center of the circle and AC¯¯¯¯¯ and BD¯¯¯¯¯ intersect at point E. If m∠AOB = 90° and

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m∠CED = 1/2(m∠AOB + m∠COD) = 1/2(90° + 16°) = 1/2(106°) = 53°

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What percent is equivalent to 2/5

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2/5 X 100 = 200/5= 40 percent

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