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leva [86]
2 years ago
15

Which of the following expressions represent 15% tip on a $20 meal? Which represents the total bill? **Select all that apply**.

Explain your reasoning for the choices you select.
A.) 1520
B.) 20+0.1520
C.) 1.1520
D.) 1510020
Mathematics
1 answer:
kifflom [539]2 years ago
4 0

Answer:

15/100 * 20, because the meal is 20 dollars and to find the percent of something you divide it with 100 so you will divide 15 with 100 and you’ll get 0.15. Then you will times it with the amount the meal cost because thats the charge. So 0.15•20 and you’ll get $3. A 15% tip for a $20 meal is $3.

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photoshop1234 [79]
I’m guessing it would be 21/24
5 0
3 years ago
The length and width of a rectangle are measured as 55 cm and 49 cm, respectively, with an error in measurement of at most 0.1 c
valentina_108 [34]

Answer:

The maximum error in the calculated area of the rectangle is 10.4 \:cm^2

Step-by-step explanation:

The area of a rectangle with length L and width W is A= L\cdot W so the differential of <em>A</em> is

dA=\frac{\partial A}{\partial L} \Delta L+\frac{\partial A}{\partial W} \Delta W

\frac{\partial A}{\partial L} = W\\\frac{\partial A}{\partial W}=L so

dA=W\Delta L+L \Delta W

We know that each error is at most 0.1 cm, we have |\Delta L|\leq 0.1, |\Delta W|\leq 0.1. To find the maximum error in the calculated area of the rectangle we take \Delta L = 0.1, \Delta W = 0.1 and L=55, W=49. This gives

dA=49\cdot 0.1+55 \cdot 0.1

dA=10.4

Thus the maximum error in the calculated area of the rectangle is 10.4 \:cm^2

4 0
3 years ago
How would this work? the graph is kinda weird
klasskru [66]
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2 years ago
76:6(679×200)-109×(567÷5)×9
fenix001 [56]

\blue{\bold{\underline{\underline{Answer:}}}}

<em><u>76:6(128,486,234.6)</u></em>

<em><u>Mar</u></em><em><u>k</u></em><em><u> </u></em><em><u>as</u></em><em><u> </u></em><em><u>BRAINLI</u></em><em><u>E</u></em><em><u>ST</u></em>

3 0
3 years ago
Val is buying tickets for the amusement park. The total cost of the
mario62 [17]

Answer: 20

Step-by-step explanation: Divide 27 by 12. You get 2.25. 2.25 is the cost of one ticket. Then divide 45 by 2.25 and your answer is 20.

Hope that helps!

8 0
3 years ago
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