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Savatey [412]
3 years ago
8

Evaluate 15cos60°. evaluate.

Mathematics
2 answers:
Fudgin [204]3 years ago
5 0

For this case we must evaluate the following expression:

15 * cos (60)

By definition we have that the cosine of 60 degrees is \frac {1} {2}. Then, substituting in the expression we have:

15 * \frac {1} {2} = \frac {15} {2} = 7.5

So, we have:

15 * cos (60) = 7.5

Answer:

15 * cos (60) = 7.5

Naddik [55]3 years ago
4 0

Answer:

15/2 or 7.5

Step-by-step explanation:

cos(60)=1/2

so 15(1/2)=15/2 or 7.5

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Answer:

1. -370

2. 70

3. 10.75

4. 6700

5. 37.26

Step-by-step explanation:

1. Estimating the solution means round the numbers to the nearest ten, then subtract the rounded numbers.

2. Same thing as #1

3. Using long division, it should be quite easy. If you need more evaluation, comment and I'll answer.

4. To the nearest hundred, you write the closest exact hundred. example: 8334 would be rounded to 8300.

5. To the nearest hundredth, you write the closest exact hundredth. example: 65.734 would be rounded to 65.73

Hope this helped, good luck!

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3 years ago
Is 3/8 bigger than 4/10
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no 4/10 is bigger than 3/8

Step-by-step explanation:

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During a phone call, Beyunka was told of the most recent transactions in her company's business account. There were deposits of
Norma-Jean [14]

Answer:

The amount of change in the balance of the account is an increase of $3160.57.

Step-by-step explanation:

i) first deposit is given as $1250

ii) second deposit is given as $3040.57

iii) first withdrawal is given as $400

iv) second withdrawal is given as $400

v) third withdrawal is given as $400

vi) first penalty removed is $35

vii) second penalty removed is $35

viii) therefore the change to the balance is given by

$1250 + $3040.57 - $400 - $400 - $400 + $35 + $35 = $3160.57

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4 0
3 years ago
A person’s website specializes in the sale of rare or unusual vegetable seeds. He sells packets of sweet-pepper seeds for $ 2.48
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Please help! Find the area and the perimeter of the shaded regions below. Give your answer as a completely simplified exact valu
Nadya [2.5K]

Answer:

The \ area \ of \ the \ figure = 4\dfrac{1}{2} \cdot \pi + 18 \ cm^2

Step-by-step explanation:

Given that the figure is made up of portion of a square and a semicircle, we have;

BC ≅ AB = 6 cm

The area of semicircle BC with radius BC/2 = 3 is 1/2×π×r² = 1/2×π×3² = 4.5·π cm²

Triangle ABC = 1/2 × Area of square  from which ABC is cut

The area of triangle ABC = 1/2×Base ×Height = 1/2×AB×BC = 1/2×6×6 = 18 cm²

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The area of the figure = 4.5·π cm² + 18 cm² = \dfrac{9 \cdot \pi +36}{2} \ cm^2.

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