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2 years ago

Prices are going up in the ratio 6:5 Write a 60% decrease as a ratio.

Mathematics

1 answer:

ivolga24 [154]2 years ago

3 0

Answer:

To Decrease an amount in a given Ratio, we need to multiply by a fraction that is less than one. For example, in scaling down a recipe for four people into a recipe for 3 people, we would use the ratio of 3 : 4 which means we would multiply all our recipe amounts.

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This is my next Trigonometry question I am needed help on- I just want to be sure I've got it right, or if not, then the steps I

Reptile [31]

$\bf cos(\theta)=\cfrac{3}{5}\cfrac{\leftarrow adjacent=a}{\leftarrow hypotenuse=c}
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c^2=a^2+b^2\implies \pm\sqrt{c^2-a^2}=b\implies \pm\sqrt{5^2-3^2}=b
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\pm\sqrt{16}=b\implies \pm4=b$

so, plus or minus? well, the angle is in the 1st quadrant, and on that quadrant, both cosine and sine are positive, so 4 = b

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4 years ago

roman ate at a restaurant and gave the waiter a $4 tip. The tip was 20% of the meal. How much was the meal?

Svetach [21]

4$-20%
X$-100%

X=4·100:20=400:20=20

Answer : He paid for the meal 20$.

4 0

3 years ago

Read 2 more answers

Hurry up!plz help I am in trouble

Tema [17]

Answer:

24.2 marks

Step-by-step explanation:

25 + 36 + 20 + 15 + 24 + 30 + 38 + 32 + 22 = 242

since there are 10 students we divide 242 by 10 and get 24.2

4 0

3 years ago

Read 2 more answers

1. In triangle ABC, D is the midpoint of BC. If Ac = 3x-15 and DE =6, what is the value of x?

Misha Larkins [42]

Answer:

Option C. 9

Step-by-step explanation:

The question is as following:

In triangle ABC, D is the midpoint of line AB and E is the midpoint of line BC. If AC= 3x-15 and DE= 6, what is the value of x?

==================================================

See the attached figure which represents the problem.

As shown:

D is the midpoint of line AB ⇒ AD = DB

E is the midpoint of line BC ⇒ BE = EC

Apply The Mid-segment theorem which states that the mid-segment connecting the midpoints of two sides of a triangle is parallel to the third side of the triangle, and the length of this mid-segment is half the length of the third side.

So, DE = 0.5 AC

Given: Ac = 3x-15 and DE =6

∴ 6 = 0.5 (3x - 15)

solve for x

Multiply both sides by 2

12 = 3x - 15

3x = 12 + 15 = 27

x = 27/3 = 9

So, the value of x is 9

The answer is option C. 9

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3 years ago

QUESTION 2 Find the 8th term for the sequence with the given formula. tn=n2 + 5

Elden [556K]

N I believe but I’m not too sure

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3 years ago