All categories

2 years ago

#19 please I’m literally failing math

Mathematics

1 answer:

ankoles [38]2 years ago

7 0

Answer:

$51.12

Step-by-step explanation:

Hello there!

In number 19, we want to find the total price of a sweatshirt that costs $48 dollars but has 6.5% sales tax

Sales tax is a small percentage of the cost of an item that is added to items when they are being sold.

In this problem, 6.5% of the cost of the sweatshirt will be added to the cost of the sweatshirt in the form of sales tax. The price of the sweatshirt plus the amount in sales tax will be the total cost of the sweatshirt.

Translating that as an equation,

48 + 48*6.5%=total cost

You can calculate 48*6.5% as $\frac{48*6.5}{100}$ , which is equal to 3.12

So that means that $3.12 will be added to the cost of the sweatshirt.

Therefore,

48 + 3.12=$51.12, which will be the total cost of the sweatshirt, including sales tax

Hope this helps!

You might be interested in

Determine which functions have two real number zeros by calculating the discriminant, b2 – 4ac. Check all that apply.

pantera1 [17]

Step-by-step explanation:

We need to write the function that have two real number zeros by calculating the discriminant i.e. $b^2-4ac$ .

We know that,

If D>0 the roots are real and unequal

If D= 0 roots are real and equal

If D< 0 roots are imaginary or not real and unequal

Function (1)

$f(x)=x^2 + 6x + 8\\\\D=6^2-4\times 1\times 8\\\\D=4$

D>0 the roots are real and unequal

Function (2)

$g(x)=x^2 + 4x + 8\\\\D=4^2-4\times 1\times 8\\\\D=-16$

D<0 the roots are real and unequal

Function (3)

$h(x)=x^2 -12x+32\\\\D=(-12)^2-4\times 1\times 32\\\\D=16$

D>0 the roots are real and unequal

Function (4)

$k(x)=x^2 +4x-1\\\\D=(4)^2-4\times 1\times (-1)\\\\D=20$

D>0 the roots are real and unequal

Function (5)

$p(x)=5x^2 +5x+4\\\\D=(5)^2-4\times 5\times 4\\\\D=-55$

D<0 the roots are real and unequal

Function (6)

$t(x)=x^2 -2x-15\\\\D=(-2)^2-4\times 1\times (-15)\\\\D=64$

D>0 the roots are real and unequal

(1),(3),(4) and (6) have two real number zeroes.

5 0

2 years ago

Last year, Kristen went bowling several times and earned an average score of 84 points. This year, she improved her score to an

Viktor [21]

Answer:

percentage increase in Kristen's average score is = 25%

Step-by-step explanation:

Given:-

- The last year score, Si = 84 points

- This year score, Sf = 105 points

Find:-

What is the percent of increase in Kristen's average score?

Solution:-

- We are to determine the percentage increase in Kristen's average score from last year.

- The relation to develop percentage increase "%inc" is given by:

% $inc = \frac{Sf - Si }{Si}*100$

- plug in the values:

$inc = \frac{105 - 84 }{84}*100\\\\inc = 25$

- The percentage increase in Kristen's average score is = 25%

8 0

3 years ago

8.15 = e + 6 Solving one step equations Addition and subtraction

Alex Ar [27]

Answer:

e= 2.15

Step-by-step explanation:

Subtract both sides by 6

2.15=e

Thus e is 2.15

Hope this helps!

7 0

1 year ago

Which of the following functions is a direct variation?

ololo11 [35]

Since k is constant (the same for every point), we can find k when given any point by dividing the y-coordinate by the x-coordinate. For example, if y varies directly as x, and y = 6 when x = 2, the constant of variation is k = = 3. Thus, the equation describing this direct variation is y = 3x.

5 0

2 years ago

What is the answer to -11y+x=-21

il63 [147K]

The answer to your question is
y= 1/11x +21/11
That’s in y=mx+b

5 0

3 years ago