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3 years ago

What is the square of 9?

Mathematics

2 answers:

Artemon [7]3 years ago

8 0

Answer:

Step-by-step explanation:

sqrt9 = 3

Marysya12 [62]3 years ago

6 0

I’m pretty sure it is 81.

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COMPLETE<br> Find the value of the function for O.<br> sin(45°) = ?

geniusboy [140]

Answer: $\sqrt{2}/2$ which is Choice B

This is the same as writing $\frac{\sqrt{2}}{2}$

The second "2" is not under or inside the square root.

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Explanation:

Refer to the unit circle below. I've highlighted the angle 45 degrees and its corresponding sine value. It's the y coordinate of the point on the unit circle, for this particular angle.

Therefore, $\sin(45^{\circ}) = \frac{\sqrt{2}}{2}$

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You could alternatively draw out a 45-45-90 triangle. Let x be the leg length and the hypotenuse is 1 unit long. Solve $x^2+x^2 = 1$ for x and you should get $x = \frac{\sqrt{2}}{2}$ as the length of each leg.

Then take the ratio of the opposite over hypotenuse to find the same answer mentioned above.

6 0

2 years ago

Law of Sines Round to the nearest degree.

german

Answer:

Step-by-step explanation:

recall law of Sines Sin(A) /a = Sin(B) / b

for this question

F = A = 105 and a = 37

E = B and b = 28

then plug those into our law of Sines equations

Sin(105) / 37 = Sin(B) / 28

0.025846 = Sin(B) / 28

28 * 0.025846 = Sin(B)

0.72369 = Sin(B)

arcSin(0.72369) = arcSin ( Sin ( B ) )

46.3599 = B

E = 46° ( rounded to the nearest degree)

6 0

2 years ago

Terry has a credit card that uses the average daily balance method. For the first 18 days of one of his billing cycles, his bala

Temka [501]

Complete question:

Terry has a credit card that uses the average daily balance method. For the first 18 days of one of his billing cycles, his balance was $350, and for the last 12 days of the billing cycle, his balance was $520. If his credit card's APR is 14%, which of these expressions could be used to calculate the amount Terry was charged in interest for the billing cycle?

(0.14/365 31)(18 $350 + 12 $520 / 31)

(0.14/365 30)(18 $350 + 12 $520 / 30)

(0.14/365 30)(12 $350 + 18 $520 / 30)

(0.14/365 31)(12 $350 + 18 $520 / 31)

Answer:

(0.14/365 30)(18 $350 + 12 $520 / 30)

Step-by-step explanation:

Number of days in a year = 365

Number of days in billing cycle = (18 + 12) = 30

Interest rate per year = 14% = 0.14

Amount charged monthly :

(Monthly rate × average daily balance)

MONTHLY RATE:

(Annual interest / number of days in year) * days in billing cycle

(0.14 / 365) × 30

Average daily balance :

First 18 days ; balance = $350

Last 12 days ; balance = $520

Sum of balance / days in billing cycle

[(18 × $350) + (12 × 520)] / 30

THEREFORE, MONTHLY INTEREST CHARGE :

((0.14 / 365) × 30) ((18 × $350) + (12 × 520) / 30)

4 0

3 years ago

Evaluate :<br> 5 - 3 x when x = - 7<br> Substitute - 7 for x.

monitta

Answer:

26 because if x= -7 then -3 X - 7 = +21

+21 +5 = 26

4 0

3 years ago

Read 2 more answers

A seamstress needs to cut 15 inches pieces of ribbon from a roll of ribbon that is 9 feet in length what is the greatest number

Natali [406]

Answer: 36

Step-by-step explanation:

One roll is of length = 9 feet

1 foot = 12 inches

9 feet = 12 *9 = 108 inches

Since there are 5 rolls

So, total length of 5 rolls = 108 * 5 = 540 inches

Since we are given that A seamstress needs to cut 15-inch pieces of ribbon from a roll of ribbon that is 9 feet in length.

We are supposed to find . What is the greatest number of 15-inch pieces the seamstress can cut from 5 of these rolls of ribbon

So, number of 15-inch pieces the seamstress can cut from 5 of these rolls of ribbon:

Hence the greatest number of 15-inch pieces the seamstress can cut from 5 of these rolls of ribbon is 36

4 0

3 years ago