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uranmaximum [27]
2 years ago
15

Phillip, Anna, and Mackenzie go out to dinner. They leave a 20% tip, which is $6. How much was their total bill with tip include

d? A. $24 B. $26 C. $30 D. $36​
Mathematics
1 answer:
Klio2033 [76]2 years ago
7 0

Answer:

give me points plzzz

Step-by-step explanation:

You might be interested in
Use the basic proportion = -to solve the following problem for the unknown quantity. Round your answer to the
Digiron [165]

Answer:

154.34%

Step-by-step explanation:

We are asked to determine what percentage of 357 is 551.

Let us assume that x% of 357 is 551.

So, \frac{357 \times x}{100} = 551

⇒ \frac{x}{100} = \frac{551}{357}

⇒ x = \frac{551}{357} \times 100 ......... (1)

⇒ x = 154.34%

So, it is clear from the step (1) that when we take the basic ratio then multiply with 100, then we will get the percentage. (Answer)

5 0
2 years ago
Method of Least Squares, Evaluation of Cost Equation Lassiter Company used the method of least squares to develop a cost equatio
maksim [4K]

Solution :

1). The cost of the formula is given as :

   $ 19,350 + $12 x

2). 95% \text{confidence interval} for the prediction is :

    $21430 - 1.96 \times 220 < \text{Yf} < 21430+1.96 \times 220$

     $20998.8 < \text{Yf} < 21861.2$

     $20999 < \text{Yf} < 21861$    (rounding off)

3). r = 0.92

Therefore, $r^2 = 0.8464$

That is 84.64 % of the variability in the moving cost is best explained by the number of moves.

3 0
3 years ago
1. -4x + 5 = 2x - 7<br> 2. 6x - 8 = 4x + 2<br> 3. -3x - 5 = 2x + 10
Svetllana [295]

Answer: 1. x=2

 2. x=5    

 3.x=-3

Isolate the variable by dividing each side by factors that don't contain the variable.

Move all terms not containing x    to the right side of the equation.

Hope this helped

7 0
3 years ago
Of all of the individuals who develop a certain rash, suppose the mean recovery time for individuals who do not use any form of
VashaNatasha [74]

Answer:

z(s) is in the rejection  region. We reject  H₀. We dont have enought evidence to support that the cream has effect over the recovery time

Step-by-step explanation:

Sample information:

Size     n = 100

mean   x = 28,5

Population information

μ₀  =  30

Standard deviation  σ   = 8

Test Hypothesis

Null Hypothesis          H₀                x =  μ₀

Alternative Hypothesis   Hₐ           x <  μ₀

We assume CI = 95 %   then α = 5 %    α = 0,05

As the alternative hypothesis suggest we should develop a one tail-test on the left ( we need to find out if the cream have any effect on the rash), effects on the rash could be measured as days of recovery

A z(c) for 0,05 from z-table is:  z(c) = - 1,64

z(s) = ( x - μ₀ ) / σ/√n

z(s) = ( 28,5 - 30 ) / 8/√100

z(s) = - 1,5 * 10 / 8

z(s) =  - 1,875

Comparing z(s)  and z(c)

|z(s)| < |z(c)|        1,875  > 1,64

z(s) is in the rejection  region. We reject  H₀. We dont have enought evidence to support that the cream has effect over the recovery time

3 0
3 years ago
Find what is x + 2½ = 10?
Ilia_Sergeevich [38]

Answer:

10 its just 10 or smthing

6 0
3 years ago
Read 2 more answers
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