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LenKa [72]
3 years ago
9

Which pair of ratios will make a proportion

Mathematics
1 answer:
sleet_krkn [62]3 years ago
6 0
The answer would be C. If you simplify the 12/9 by 3 it would simplify to be 4/3 and 4/3 = 4/3. You can also cross multiply 4/3 = 12/9. 4(9) = 12(3) both would equal 36 so they would be proportional.
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Complete the identity
spin [16.1K]

Answer: cos(\pi-x)=-cos(x)

Step-by-step explanation:

We need to apply the following identity:

cos(A - B) = cos A*cos B + sinA*sin B

Then, applying this, you know that for cos(\pi-x):

cos(\pi-x)=cos(\pi)*cos(x)+sin(\pi)*sin(x)

We need to remember that:

cos(\pi)=-1 and sin(\pi)=0

Therefore, we need to substitute these values into cos(\pi-x)=cos(\pi)*cos(x)+sin(\pi)*sin(x).

Then, you get:

cos(\pi-x)=(-1)*cos(x)+0*sin(x)

cos(\pi-x)=-1cos(x)+0

cos(\pi-x)=-cos(x)

8 0
3 years ago
Write the following word phase as a mathematical equation. The sum of 7 and twice a number, squared.
agasfer [191]

Answer:

(7+(2n))^2

You don't technically need the ( ) around the 2n, but I included them to avoid confusion.

4 0
3 years ago
Helpppppppppppppppppppp
lesya [120]

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• An angle

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A plane is named by 4 points

3 0
3 years ago
The Pit BBQ food truck sells two combo packs of ribs and brisket. Combo A contains 10 oz of brisket and 16 oz of ribs and sells
GenaCL600 [577]

The maximum revenue is $700 which is at 16 combo A and 12 combo B.

<h3>Inequality</h3>

An inequality is an expression that shows the non equal comparison of two or more numbers and variables.

Let x represent the number of combo A and y represent the number of combo B, hence:

10x + 20y ≤ 400 (1)

Also:

x + y ≤ 28   (2)

The solution is at (16,12). Hence:

Revenue = 21.25 * 16 + 30 * 12 = $700

The maximum revenue is $700 which is at 16 combo A and 12 combo B.

Find out more on Inequality at: brainly.com/question/24372553

3 0
2 years ago
What is 17- 6 11/12<br> Can someone please solve in steps?
Airida [17]

17- 6 11/12

borrow from the 17 and use a common denominator

16 12/12 - 6 11/12

10 1/12

6 0
3 years ago
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