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Xelga [282]
2 years ago
14

Wendy and two friends went out to eat and decided they would split the bill. The total bill was 35.40. They also decided to leav

e a 20% tip. What is the price that each person paid?
Mathematics
1 answer:
marta [7]2 years ago
8 0

Answer:

14.16

Step-by-step explanation:

we first calculate the total amount of money paid, which is 35.40 plus 20%, we use this calculation:

35.40×1.20 = 42.48

now, this amount is split to 3 people, so:

42.48/3 = 14.16

and that is our answer

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ANSWER ASAP!! Find the area of a triangle with legs that are: 12 m, 15 m, and 9 m.
Setler79 [48]

Answer:

<h2>54m²</h2>

Step-by-step explanation:

<h3>METHOD 1:</h3>

You can use the Heron's formula:

A=\sqrt{p(p-a)(p-b)(p-c)}

where

<em>p</em><em> - half of perimeter</em>

<em>a, b, c</em><em> - lengths of sides</em>

We have

a=12m;\ b=15m;\ c=9m

Calculate:

p=\dfrac{12+15+9}{2}=\dfrac{36}{2}=18\ (m)\\\\A=\sqrt{18(18-12)+(18-15)(18-9)}\\\\A=\sqrt{(18)(6)(3)(9)}\\\\A=\sqrt{2916}\\\\A=54\ (m^2)

<h3>METHOD 2:</h3>

Let's check that it is not a right triangle.

If the sum of the squares of the two shorter sides is equal to the square of the longest side, then this triangle is rectangular.

We have

9m < 12m

Check:

9^2+12^2=81+144=225\\15^2=225

This is a right trianglr wherew 9m and 12m are legs and 15m is a hypotenuse.

The formula of an area of a right triangle is:

A=\dfrac{ab}{2}

<em>a, b</em><em> - legs</em>

Substitute:

A=\dfrac{(9)(12)}{2}=\dfrac{108}{2}=54\ (m^2)

6 0
3 years ago
10.36 less than the product of 42 and x <br> please i need help
Brums [2.3K]

Answer:

so the problem is saying 42x-10.36 so it's just saying take 10.36 away from 42 multiplied by X

Step-by-step explanation:

3 0
3 years ago
Write 28 + 24 as a product of two factors using the GCF and the distributive property
Harman [31]

Answer:

4 x 13

Step-by-step explanation:

GCD of 28 and 24 is 4

28 = 4 x 7

24 = 4 x 6

u take the 4 out

4 (7 + 6)

4 x 13

6 0
3 years ago
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What is 5.06 times 2.10. Pease show work
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your \: answer \: is \: 10.626

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3 0
3 years ago
What is 159% of 980? Round to the nearest hundredth.
notsponge [240]

Answer: There is no need to round in this case, but 159% of 980 is 1558.2.

3 0
4 years ago
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