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4 years ago

$28 lunch ; 15% tip total cost to the nearest cent

2 answers:

5 0

To find the tip:
28 x 15/100 = 4.2 dollars
Add the tip to the cost of the lunch gives us the total cost:
28 + 4.2 = 32.2

BartSMP [9]4 years ago

5 0

The answer is 32.2 dollars hope this helps!

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Which equation can be solved by using this expression?

Marat540 [252]

<u>Answer:</u>

The correct answer option is B. 2 = 3x + 10x^2

<u>Step-by-step explanation:</u>

We are to determine whether which of the given equations in the answer options can be solved using the following expression:

$x=\frac{-3 \pm\sqrt{(3)^2+4(10)(2)} }{2(10)}$

Here, $a = 10, b = 3$ and $c=-2$ .

These requirements are fulfilled by the equation 4 which is:

$12=3x+10x^2$

Rearranging it to get:

$10x^2+3x-2=0$

Substituting these values of $a,b,c$ in the quadratic formula:

$x= \frac{-b \pm \sqrt{b^2-4ac} }{2a}$

$x= \frac{-3 \pm\sqrt{(3)^2-4(10)(-2)} }{y}$

3 0

3 years ago

Select the statements that is SOMETIMES TRUE.

allochka39001 [22]

Answer:

A and B

Step-by-step explanation:

Here, we want to select the statements that are sometimes true

The correct answers are that;

1. A parallelogram has congruent diagonals

This is in the case of a rectangle

Whenever we have the diagonals of a parallelogram equal, then what we have is a rhombus

b. A rhombus is a parallelogram

In this case, we have that a rhombus is a kind of parallelogram with all four sides equal and the diagonal meet at 90 degrees

3 0

3 years ago

Help

BigorU [14]

Answer:

$69$

thats it all of them are 69

4 0

3 years ago

Let g be the function given by g(x)=x^2*e^(kx) , where k is a constant. For what value of k does g have a critical point at x=2/

ArbitrLikvidat [17]

G `( x ) = $2x * e^{kx} + k x^{2} *e^{kx} = \\ = xe^{kx}(2 + kx )$
2 + k x = 0
k x = -2
k = -2: x = - 2 : 2/3 = - 2 * 3/2
k = - 3
Answer: for k= - 3, the function g ( x ) have a critical point at x = 2/3.

8 0

3 years ago

I need help please ASAP

azamat

What is the question

7 0

3 years ago

Read 2 more answers