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MakcuM [25]
3 years ago
7

What is the exact value of cos 225º cos 75°?

Mathematics
2 answers:
love history [14]3 years ago
5 0

Answer:

-\frac{\sqrt{3}  -1}{4}

Step-by-step explanation:

julsineya [31]3 years ago
3 0

Answer:

√

6

−

2

4

Step-by-step explanation:

i dont kno the other one

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Bill has 5 cups of strawberries he uses 2 and 1/6 to make smoothies he uses the rest of the strawberries to make fruit cups he n
Dmitry_Shevchenko [17]

Answer: Total fruit cups made = 4\dfrac14

Step-by-step explanation:

Total cups of strawberries = 5

Cups used for smoothies = 2\dfrac16=\dfrac{13}{6}

Since rest of the strawberries are used to make fruit cups = 5-\dfrac{13}{6}=\dfrac{30-13}{6}=\dfrac{17}{6}

Cups of strawberries for each fruit cup = \dfrac23

Total fruit cups made = (rest of the strawberries ) ÷(Cups of strawberries for each fruit cup)

=\dfrac{17}{6}\div \dfrac23\\\\=\dfrac{17}{6}\times\dfrac32\\\\=\dfrac{17}{4}\\\\=4\dfrac14

∴ Total fruit cups made = 4\dfrac14

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3 years ago
What is the concept of ratios
Flura [38]
How is elementary? just wondering haha seems hard for a kid
8 0
4 years ago
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Emanuel works as a car salesman. He makes $13 an hour plus a commission of 5% on all cars he sells. Last month he worked 40 hour
gtnhenbr [62]

Solution: Emanuel earns $13 per hour. Also he earns a commission of 5% on all cars he sells.

Number of hours Emanuel worked last month = 40 hours

He sold cars worth $120,000.

Therefore, the total earning of Emanuel is:

13 \times 40 + 5\% of 120,000

520 + \frac{5}{100} \times 120,000

520+6000

6520

Hence, last month Emanuel made $6520, including his hourly pay and commissions.

7 0
3 years ago
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13. Find a four digit number that is divisible by 3,<br> 5, and 8.
IRINA_888 [86]

Answer:

3×5×8=120

Step-by-step explanation:

divisibility and prime number

4 0
3 years ago
Evaluate the summation of 2 times negative 2 to the n minus 1 power, from n equals 1 to 7..
sukhopar [10]
Thank you for posting your question here at brainly. Feel free to ask more questions.  

<span>The best and most correct answer among the choices provided by the question is 86.</span><span>       
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3 years ago
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