<img src="https://tex.z-dn.net/?f=%5Csqrt%7B9-4%5Csqrt%7B5%7D%20%7D" id="TexFormula1" title="\sqrt{9-4\sqrt{5} }" alt="\sqrt{9-4

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Sedaia [141]

2 years ago

\sqrt{5} }" align="absmiddle" class="latex-formula">. Solve.

Mathematics

1 answer:

Degger [83]2 years ago

4 0

Answer: √5-2.

Step-by-step explanation:

$\sqrt{9-4\sqrt{5} }=\\\\ \sqrt{5+4-2*2*\sqrt{5} } =\\\\\sqrt{(\sqrt{5})^2-2*\sqrt{5}*2+2^2 } =\\\\\sqrt{(\sqrt{5}-2)^2} =\\\\|\sqrt{5} -2|=\\\\\sqrt{5} -2$

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Komok [63]

Answer:

Part a) $22.95+0.43x \leq 25$

Part b) The maximum number of candy bars that you can purchase is 4

Part c) The change would be $\$0.33$

Step-by-step explanation:

Part a) Write an equation representing your shopping experience and use x for the number of candy bars

Let

x -----> the number of candy bars

we know that

The inequality that represent this problem is equal to

$2(3.50)+2(2.75)+10.45+0.43x \leq 25$

$22.95+0.43x \leq 25$

Part b) Solve the equation to determine how many candy bars can you purchase?

$22.95+0.43x \leq 25$

Solve for x

Subtract 22.95 both sides

$0.43x \leq 25-22.95$

$0.43x \leq 2.05$

Divide by 0.43 both sides

$x \leq 2.05/0.43$

$x \leq 4.8$

The maximum number of candy bars that you can purchase is 4

Part c) How much change would you have left?

If you purchase 4 candy bars

then

$22.95+0.43(4)=\$24.67$

therefore

$\$25-\$24.67=\$0.33$

4 0

4 years ago

Use De Morgan's laws to write negations for the statement. Sam is an orange belt and Kate is a red belt.

iVinArrow [24]

Answer:

C. Same is not an orange belt and Kate is not a red belt.

Step-by-step explanation:

A negation is an operation that "takes a statement and changes it to a statement whose true or false value is opposite". For example, if I were to say 2 + 2 = 4, the negation would be that 2 + 2 ≠ 4.

So, if Sam is an orange belt and Kate is a red belt, the negation is C. Same is not an orange belt and Kate is not a red belt.

Hope this helps!

5 0

4 years ago

Read 2 more answers

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zaharov [31]

Answer:

x=14

Step-by-step explanation:

This is asking for the ratio of A to B.

The x-10 is 1.

The 28 is 7.

Find the scale factor by executing 28/7=4.

So, you would want polygon A to be 4 in order to be proportional to polygon B.

Now, you can just guess and check that 14-10=4

Or, you can set up the equation as follows: x-10 = 4

+10 +10

x = 14 is your answer.

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3 years ago

Help!

dezoksy [38]

The answer is the first one: {x/x not equal to 100}
This means that x can be equal to any real number except 100

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3 years ago

What is the best approximation of the sine of 50°?

Nina [5.8K]

It's 0.7660. When you plug it in the calc. you'll get 0.7660444431.

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3 years ago