What’s the answer I just need a quick answer and my teacher thinks I’m wrong

Answer:

Her change was: $3.5

Step-by-step explanation:

Mary bought a shirt on sale for $15.00.

As the sales tax was 10%.

i.e. 10/100 × 15 = $1.5

so the sales tax on $15.00 was $1.5.

Hence, the total cost Mary had to pay to buy the shirt was:

$1.5 + $1.5 = $16.5

As Mary paid with a $20 bill, therefore the change can be calculated as

20 - 16.5 = $3.5.

Therefore, her change was: $3.5

Answer:

its B

Step-by-step explanation:

Answer:

A altura máxima é 5

Step-by-step explanation:

Matematicamente, a altura máxima pode ser obtida

A altura máxima é simplesmente o vértice da parábola

Começamos diferenciando a função Isso será -8x

Agora, defina -8x como 0

Isso significa que x = 0

Agora, substitua x = 0 de volta na equação temos

f (0) = -4 (0) ^ 2 + 5

f (0) = 5

A altura máxima é 5

Answer:

The answer is 11/6! Hope this helped!

Steps:

6/3 + (-1/6)

apply rule --> a + (-b) = a - b

6/3 + (-1/6) = 6/3 - 1/6

= 6/3 - 1/6

6/3 = 2

= 2 - 1/6

2 = 6 x 2 over 6

= 6 x 2 over 6 - 1/6

= 12/6 - 1/6

apply fraction rule --> a/c - b/c = a - b over c

12/6 - 1/6 = 12 - 1 over 6

= 12 - 1 over 6

= 11/6

Answer:

+$90;

$1,600

Step-by-step explanation:

The equation, [tex] y = 1600 + 90x [/tex], given to us tells us much about the situation described above.

y = total pay

x = number of copies of Math is fun

1600 = y-intercept, that is the starting value or the pay he gets only if Sam sold 0 copy of Math is fun. That is, when x = 0, y = 1,600.

90 = unit rate or the change in the total pay for each copy of Math is fun that Sam sells.

Therefore, our answers would be:

+$90, and $1,600

Answer:

it never said how many people died, so 0, because if they lived long enough as together with 80 brothers, plus 25*80 sisters, then no one dies exept the mothers womb and the parents bank account

Step-by-step explanation:

Answer:

g(x) = [tex]4^{(x-1)}+3[/tex]

Step-by-step explanation:

Given exponential function is,

f(x) = [tex]4^{x}[/tex]

If the given function is shifted 1 unit to the right,

h(x) = f(x - 1)

      = [tex]4^{(x-1)}[/tex]

If the function 'h' is shifted 3 units up,

g(x) = h(x) + 3

      = [tex]4^{(x-1)}+3[/tex]

Therefore, transformed function will be,

g(x) = [tex]4^{(x-1)}+3[/tex]

Answer:

no its not right

the line doesn't pass by (2,0) it passes by (2,1)

Answer:

The slope is 6/10

Step-by-step explanation:

Slope is equal to the change in y over the change in x. In this case the change in x was 60 and the change in y was 100.

Lets Solve!

change y/ change x

Substitute the change in y and change in x.

60/100

Simplify

6/10

The slope is 6/10

Answer: -9

18/x = -2

⇔ x = 18/(-2)

⇔ x = -9

Step-by-step explanation:

Answer:

Step-by-step explanation:

Given the profit a club makes after paying for the bank and other costs modeled by the function

p(t) = -16t^2 - 800t - 4000

t is the ticket price

The maximum profit occurs when dp/dx = 0.

dp/dx = -32t-800

since dp/dx

0 = -32t-800

32t = -800

t = -800/32

t = - 25

Hence ticket price gives the maximum profit is $-25

b) to get the maximum profit, substitute t = -25 into the modelled function

p(t) = -16t^2 - 800t - 4000

p(-25) = -16(-25)² - 800(-25)- 4000

p(-25) = -10000+20000-4000

p(-25) = 6000

Hence maximum profit is $6000

c) To get the ticket prices would generate a profit of $5000, we will substitute p(t) = 5000 and find t

p(t) = -16t^2 - 800t - 4000

5000 = -16t^2 - 800t - 4000

-16t^2 - 800t - 4000 -5000 = 0

16t^2 + 800t + 9000 = 0

Answer:

Step-by-step explanation:

Given the profit a club makes after paying for the bank and other costs modeled by the function

p(t) = -16t^2 - 800t - 4000

t is the ticket price

The maximum profit occurs when dp/dx = 0.

dp/dx = -32t-800

since dp/dx

0 = -32t-800

32t = -800

t = -800/32

t = - 25

Hence ticket price gives the maximum profit is $-25

b) to get the maximum profit, substitute t = -25 into the modelled function

p(t) = -16t^2 - 800t - 4000

p(-25) = -16(-25)² - 800(-25)- 4000

p(-25) = -10000+20000-4000

p(-25) = 6000

Hence maximum profit is $6000

c) To get the ticket prices would generate a profit of $5000, we will substitute p(t) = 5000 and find t

p(t) = -16t^2 - 800t - 4000

5000 = -16t^2 - 800t - 4000

-16t^2 - 800t - 4000 -5000 = 0

t^2 + 50t + 562.5= 0

Factorize

-50±√2500-4(562.5)/2

t = -50±√2500-2250)/2

t = -50±15.81/2

t = -65.81/2 and -34.19/2

t = -32.91 and -17.09

Answer:

x>9

Step-by-step explanation:

x−4>

​3

​

​15

​​

x−4>5

x>5+4

x>9

Answer:

$0.5

Step-by-step explanation:

10*0.05 = 0.5 dollars

Answer:

.50

Step-by-step explanation:

Selling price x sales tax rate = sales tax

10 x .05 (5%) = .50

Answer:

This is an example of linear modeling. Linear modeling is a best practice for prediction as the prediction is accurate even though 14 weeks is outside the given interval of 10 weeks.

Step-by-step explanation:

thats just what it is

The solution is Option C )

This is an example of linear modeling. Linear modeling is a best practice for prediction as the prediction is accurate even though 14 weeks is outside the given interval of 10 weeks

What is Linear model?

A linear model is a model in which the terms are added, such as has been used so far in this section, rather than multiplied, divided, or given as a non-algebraic function. Linear modeling can predict the behavior of complex systems or analyze experimental, financial, and biological data.

Linear regression is a statistical method used to create a linear model. The model describes the relationship between a dependent variable y (also called the response) as a function of one or more independent variables Xi (called the predictors).

Given data ,

Weight of the puppies = y pounds

Number of weeks after birth = t

Linear model representing the relationship between weight of puppies and time after birth in weeks is y = 2.3 + 5.73t

This is a clear idea of Linear models because the data describe a continuous response variable as a function of one or more predictor variables.

Hence , this is an example of linear modeling. Linear modeling is a best practice for prediction as the prediction is accurate even though 14 weeks is outside the given interval of 10 weeks

To learn more about linear modeling click :

https://brainly.com/question/28436453

#SPJ2

Answer:

Hey buddy, here is your answer. Hope it helps you.

Step-by-step explanation:

No of sides= 360/exterior angle

=360/20

=18 sides

the number of the sides of the polygon is 18 sides.

Answer:

Bottom Right Graph (Absolute Value)

General Formulas and Concepts:

Step-by-step explanation:

When we apply the VLT to the 4 different graphs, we see that the only graph that actually passes the VLT is the absolute value graph. Therefore, that is our answer (none of the other graphs pass the VLT).

Answer:

D

Step-by-step explanation:

surely and i think it's correct

Answer:

D is the correct answer

Step-by-step explanation:

Answer:

y=5x+3

Step-by-step explanation:

First, we need to find the slope. Remember that the slope equation is [tex]m=\frac{y2-y1}{x2-x1}[/tex].

If we plug in the given points we get m=5. (let me know if you need further elaboration on this step)

So now that we have a slope, we can plug it into the slope-intercept equation.

y=mx+b

y=5x+b

We still need to find b (y-intercept), but luckily, we were given two points that we could plug in. I'm going to use (1,8) here.

8=5(1)+b

8=5+b

b=3

Now we have all of our parts and can put them into the equation.

y=5x+3

Hope this helped!

Answer:

7.2inches.

Step-by-step explanation:

Given parameters:

Radius of Circle A  = 6inches

Unknown:

Radius of circle B  = ?

Solution:

We are to find the radius of circle B.

  The relationship between circle A and B is such that;

    Radius of Circle B  = 20% greater than that of A

   Radius of Circle B  = 1.2 x 6  = 7.2inches.

✨Answer:✨

9 3/4 (simplest form)

✨Step-by-step explanation:✨

1. Convert decimal into fraction:

9.75 = 975/100

2. Simplify:

975/100 = 39/4 = 9 3/4

A. Reduce fraction to lowest terms (25 is the greatest common divisor of 975 and 100. Reduce by dividing both numerator and denominator by 25):

975/100 = 975 ÷ 25   = 39/4

                 100 ÷ 25

B. Convert improper fraction to mixed number:

39/4 = 9 3/4

(39 ÷ 4 = 9 remainder 3)

Answer:

64

Step-by-step explanation:

Answer: Your answer is 64 4 times 4 equals 16 then 16 times 4 equals 64 <3

Step-by-step explanation:

Answer:

Well I'm not a girl soo No.

Step-by-step explanation:

Answer:

(3,7)

Step-by-step explanation:

Answer: 58 degrees

Step-by-step explanation:

Answer:

That is a 45% increase

Step-by-step explanation:

Answer:

2 3/4 > 2 4/6

Step-by-step explanation:

Answer:

2 3/4 < 2 4/6

Step-by-step explanation:

brainlist plz thx

Answer:

I think the answer is D

Step-by-step explanation: