1 Question - Solve for the equation using the quadratic formula.

Clarissa went to her favorite restaurant for dinner. if her meal cost 12.00 and she wants to add a 15 %tip how much is her total

Natalija [7]

12.00*0.15=1.80
12+1.80=13.80
Total bill = $13.80

3 0

4 years ago

Read 2 more answers

100 Points! What are the classifications of each system?

alexdok [17]

Answer:

Part 1) Is a inconsistent system

Part 2) Is a consistent independent system

Part 3) Is a consistent dependent system

see the attached figure

Step-by-step explanation:

we know that

If a system has at least one solution, it is said to be consistent .

If a consistent system has exactly one solution, it is independent .

If a consistent system has an infinite number of solutions, it is dependent

If a system not have solution, it is said to be inconsistent

Part 1) we have

$x+5y=-2\\x+5y=4$

This system of linear equations has two parallel lines (their slopes are equal) with different y-intercept

so

The lines don't intersect

The system has no solution

therefore

Is a inconsistent system

Part 2) we have

$y=3x+4\\-2x+y=4$

we know that

If two lines have different slopes, then the lines intersect at one point and the system of equations has one solution

In this problem, the lines have different slopes (m=3 and m=2)

so

The lines intersect at one point

The system has one solution

therefore

Is a consistent independent system

Part 3) we have

$3x+y=4$ ----> equation A

$-6x-2y=-8$ ----> equation B

Multiply equation A by -2 both sides

$-2(3x+y)=-2(4)$

$-6x-2y=-8$ ----> equation C

Compare equation B and equation C

Are identical lines

so

The system has infinity solutions

therefore

Is a consistent dependent system

4 0

4 years ago

Mrs. Jacobs purchased a 5 pound package of ground beef for $12.40. She decided to use 8 ounces each day for dinner recipes. What

WITCHER [35]

There is 16 ounces in 1 pound. so you would want to divide 12.40 by 5 = $2.48 . so its $2.48 for a pound divide by 2 and you answer would be $1.24... i hope that helps

7 0

3 years ago

Find cscθ.<br><br>pls answer

ExtremeBDS [4]

Answer:

The answer to your question is csc Ф = $\frac{-5}{4}$

Step-by-step explanation:

Process

1.- Determine the sign

We must determine csc Ф in the forth quadrangle, here csc is negative.

2.- Determine the hypotenuse

c² = a² + b²

c² = 3² + (-4)²

c² = 9 + 16

c² = 25

c = 5

3.- Determine csc Ф

csc Ф = $\frac{hypotenuse}{opposite side}$

csc Ф = $\frac{5}{-4}$ = $\frac{-5}{4}$

7 0

3 years ago

How do you solve this???????<br> 3x+6=-5-2x-6

Elina [12.6K]

Answer:

Step-by-step explanation:

3x+6=-5-2x-6

+2x. +2x

5x+6= -5-6

5x+6= -11

-6. -6

5x= -17

divide by 5

x= -3.4

4 0

4 years ago