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garik1379 [7]
3 years ago
8

Don and Marie like to go to a good restaurant. Dinners are $16 to $19 dollars with soup or salad. A beverage is $1.50. Dessert i

s $3.75. If one dinner is $16, the other is $19 and each diner has a beverage and dessert, what will the cost be if a 6% tax is charged and a 15% tip on the pre-tax amount is left? $
Mathematics
2 answers:
Vanyuwa [196]3 years ago
8 0
40.25 you add everything together then multiply by .6
barxatty [35]3 years ago
5 0
16 + 19 + 2(1.50) + 2(3.75) = 45.50....now this is before tax

there is a tip of 15%.....0.15(45.50) = 6.825 rounds to 6.83....tip

there is a 6% sales tax......45.50 * 1.06 = 48.23

so in total, meal + tax + tip = 48.23 + 6.83 = 55.06 <===
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ZanzabumX [31]

Find the distance of each trip:

68 km / 34 trips = 2 km per trip

Divide total distance by distance per trip:

348 km / 2 km per trip = 174 trips

Answer: 174 trips

5 0
3 years ago
Solve for x (5x-3)/4 = x/3 + 1 and please show working out
Mila [183]
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5x-3 = 4x/3 +4 
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(11/3)x = 7 
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4 0
3 years ago
1. Kalena was asked to prove ifx(x - 1)(x + 1) = x3 - X represents a polynomial identity. She
Verdich [7]

Answer:

C. Kalena made a mistake in Step 3. The justification should state: -x²

+ x²

Step-by-step explanation:

Given the function x(x - 1)(x + 1) = x3 - X

To justify kelena proof

We will need to show if the two equations are equal.

Starting from the RHS with function x³-x

First we will factor out the common factor which is 'x' to have;

x(x²-1)

Factorising x²-1 using the difference of two square will give;

x(x+1)(x-1)

Note that for two real number a and b, the expansion of a²-b² using difference vof two square will give;

a²-b² = (a+b)(a-b) hence;

Factorising x²-1 using the difference of two square will give;

x(x+1)(x-1)

Factorising x(x+1) gives x²+x, therefore

x(x+1)(x-1) = (x²+x)(x-1)

(x²+x)(x-1) = x³-x²+x²-x

The function x³-x²+x²-x gotten shows that kelena made a mistake in step 3, the justification should be -x²+x² not -x-x²

6 0
3 years ago
Whats an exponent and how is it used an mathematics
gizmo_the_mogwai [7]

Answer:  a quantity representing the power to which a given number or expression is to be raised, usually expressed as a raised symbol beside the number or expression

Step-by-step explanation:

for example

10  x 10 = 100

to simplify this you put a small 2 on the top right corner of the number 10

4 0
3 years ago
Use the image below to answer the following question:
nikdorinn [45]

Answer:

The ratios are both identical. (4 over 5 and 4 over 5)

Step-by-step explanation:

Th picture below represent the image you are referring.

sin x = opposite / hypotenuse

opposite side = 4

hypotenuse = 5

sin x° = 4/5

cos y° = adjacent/hypotenuse

adjacent = 4

hypotenuse = 5

cos y° = 4/5

The ratios are both identical (4 over 5 and 4 over 5)

6 0
2 years ago
Read 2 more answers
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