2 years ago

Dinner Bill- $28.15, Tax- 8%, Tip- 15% What is the final cost.

Mathematics

1 answer:

aev [14]2 years ago

7 0

Answer is 34.96$ for the final cost.

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Factor completely. 12x4+18x3+45x2 Enter your answer in the box.

lukranit [14]

QUESTION 1

The given expression is

$12x^4+18x^3+45x^2$

The greatest common factor is $3x^2$ .

We factor to obtain;

$3x^2(4x^2+6x+15)$

QUESTION 2

The given quadratic equation is

$x^2+6x-72=0$

We split the middle term to obtain

$x^2+12x-6x-72=0$

Factor by grouping;

$x(x+12)-6(x+12)=0$

$(x+12)(x-6)=0$

Use zero product property;

$(x+12)=0\:\:or\:\:(x-6)=0$

$x=-12\:\:or\:\:x=6$

QUESTION 3

The given system of equation is

$3x+4y=-8$

$7x-3y=6$

If we multiply $3x+4y=-8$ by 3, we obtain;

$9x+12y=-24$

If we multiply $7x-3y=6$ by 4 we obtain;

$28x-12y=24$

Adding the last two equations will give us;

$37x=0$

The y-variable is eliminated.

Answer:Multiply 3x+4y=−8

by 3. Multiply 7x−3y=6 by 4. Add the resulting equations together.

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3 years ago

Aflati 2 numere stiind ca sunt direct proporționale cu 5 și 3 și suma lor este 100

aleksandrvk [35]

Answer:

idk

Step-by-step explanation:

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3 years ago

Daca a = 3-5 si b= 4:3*9:2

Thepotemich [5.8K]

A={2,3,5}
B={1,3,4}
A∩B={3}
R: a. {3}

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3 years ago

How many 3/8 go into 3/2

marshall27 [118]

Answer: 3/8 can’t go to 3/2

Step-by-step explanation:

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3 years ago

Heather bought a CD on sale for $11 and a book that cost $14 the sales tax rate is 5% how much tax did Heather pay for both item

Travka [436]

Add 11 and 14 = 25. Then change 5% to a decimal or .05. 25 x .05= $1.25 this is the tax. Add $25 to $1.25. Answer is $26.25

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3 years ago

Dinner Bill- $28.15, Tax- 8%, Tip- 15% What is the final cost.​

Dinner Bill- $28.15, Tax- 8%, Tip- 15% What is the final cost.