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2 years ago

2. Quinton sold the most tickets in his school for the annual Autumn Festival. As a

Mathematics

2 answers:

Umnica [9.8K]2 years ago

7 0

Answer:

I personally would choose the notebook

Step-by-step explanation:

juin [17]2 years ago

4 0

Answer:

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A translation 2 units to the right and 10 units up. Then a reflection over the line AC

Artyom0805 [142]

80 is the correct answer

6 0

2 years ago

Translate this sentence into an equation.: Mai's savings increased by 15 is 65. Use the variable m to represent Mai's savings.

Schach [20]

M+15=65 could this be the answer you are possibly looking for? if the m is Mai's savings "increased by 15" would simply be adding 15 and it would be equal to 65

7 0

2 years ago

The mass of a rock sample is 25 g and

balu736 [363]

Answer:

given us,

mass= 25g

density= 5 g/ cm2

here,

volume = mass/ density

= 25g/ 5g cm2

= 5cm2

Step-by-step explanation:

cm2 is the square

3 0

2 years ago

Read 2 more answers

Use the formula for the cosine of the difference of two angles to find the exact value of the following expression.

Zolol [24]

Answer:

Exact value of Cos(45° - 60°) is 0.96 using difference of two angles.

Step-by-step explanation:

Given:

Cos(45° - 60°)

We have to apply the formula of cosine for difference of the two angles.

Formula:

$cos(a-b)=cos(a)\ cos(b)+sin(a)\ sin(b)$

Plugging the values.

⇒ $cos(45-60)=cos(45)\ cos(60) + sin(45)\ sin(60)$

We know that the values :

$sin(45) =cos(45) = \frac{1}{\sqrt{2} }$

$sin(60)=\frac{\sqrt{3} }{2}$ and $cos(60)=\frac{1}{2}$

So,

⇒ $cos(45-60)=(\frac{1}{\sqrt{2} } \times \frac{1}{2} ) + (\frac{1}{\sqrt{2} } \times \frac{\sqrt{3} }{2})$

⇒ $cos(45-60)=(\frac{1}{2\sqrt{2} } + \frac{\sqrt{3} }{2\sqrt{2} })$

⇒ $cos(45-60)=(\frac{1+\sqrt{3} }{2\sqrt{2} } )$

⇒ $cos(45-60)=(\frac{1+\sqrt{3} }{2\sqrt{2} } )\times \frac{2\sqrt{2} }{2\sqrt{2} }$ ...rationalizing

⇒ $cos(45-60)=\frac{2\sqrt{2} +2\sqrt{6} }{ 8}$

⇒ $cos(45-60)=\frac{2(\sqrt{2}+\sqrt{6})}{8}$ ...taking 2 as a common factor

⇒ $cos(45-60)=\frac{(\sqrt{2}+\sqrt{6})}{4}$

To find the exact values we have to put the values of sq-rt .

As, $\sqrt{2}=1.41$ and $\sqrt{6} =2.44$

Then

⇒ $cos(45-60)=\frac{( 1.41+2.44)}{4}$

⇒ $cos(45-60)=\frac{( 3.85)}{4}$

⇒ $cos(45-60)=0.96$

So the exact value of Cos(45° - 60°) is 0.96 using difference of two angles.

3 0

2 years ago

Help! You can see option c but it says: "Total number of meters of string Hope used"

yaroslaw [1]

the answer is b because they didnt give you a number for the 3rd yo yo

good luck with khan!!

8 0

2 years ago