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Oksana_A [137]
3 years ago
13

If you go out to eat, a good tip is $18 when the bill costs $100. What is this percent?

Mathematics
2 answers:
yuradex [85]3 years ago
5 0

Answer:

I think0.18

Step-by-step explanation:

dlinn [17]3 years ago
4 0

Answer:

This is a good tip and $18 is 18% of what the meal cost.

Step-by-step explanation:

On average the proper tip is 15% of the cost of your meal cost. In this case you have paid 18% of your meal cost.

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Which of the following expressions are factors of 25x^3−75x^2−9x+27?
Natali [406]

Answer:

I am not sure but I think the correct answer is c

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3 years ago
Just answer what it asks in the picture PLEASE
Molodets [167]

m∠1 = 30° (by Vertical angle theorem)

m∠A = 80° (by Triangle sum theorem)

m∠D = 80° (by Triangle sum theorem)

The value of x is 7.5 and y is 9.

Solution:

∠ACB and ∠DCE are vertically opposite angles.

Vertical angle theorem:

<em>If two lines are intersecting, then vertically opposite angles are congruent.</em>

⇒ m∠DCE = m∠ACB

⇒ m∠1 = 30° (by Vertical angle theorem)

In triangle ACD,

Triangle sum property:

<em>Sum of the interior angles of the triangle = 180°</em>

⇒ m∠A + m∠C + m∠B = 180°

⇒ m∠A + 30° + 70° = 180°

⇒ m∠A + 100° = 180°

⇒ m∠A = 100° – 180°

⇒ m∠A = 80° (by Triangle sum theorem)

Similarly, m∠D = 80° (by Triangle sum theorem)

In ΔACD and ΔDCE,

All the angles are congruent, so ΔACD and ΔDCE are similar triangles.

<em>In similar triangle corresponding sides are in the same ratio.</em>

$\frac{9}{12}=\frac{x}{10}

Do cross multiplication.

90 = 12x

7.5 = x

Now, to find y:

$\frac{9}{12}=\frac{6}{y}

Do cross multiplication.

9y = 72

Divide by 9, we get

y = 8

Hence the value of x is 7.5 and y is 9.

7 0
3 years ago
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miv72 [106K]

Answer:

A

Step-by-step explanation:

The volume (V) of water in the tank is calculated as

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Here l = 80, b = 40 and h = 50 , then

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V ( in litres) = 160000 ÷ 1000 = 160 litres , then

number of times = 160 ÷ 10 = 16

8 0
2 years ago
What is the measure of angle d? <br> A. d=59 <br> B. d=114 <br> C. d=55 <br> D. d=66
gayaneshka [121]

Answer:

A. d = 59°

Step-by-step explanation:

We know that the 3 angles added up together are a straight line or 180°. Therefore,

m∠d° = 180 - (57 + 64)

6 0
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Answer:

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