The department store sells logo t-shirts at an original price of $12.50. Every month that a t-shirt doesn’t sell, the store reduces the price by 25%. Brianna calculated the price after two reductions:

12 dollars and 50 cents minus (12 dollars and 50 cents) (0.25) minus (12 dollars and 50 cents) (0.25) = 6 dollars and 25 cents

What is Brianna’s error?

Answer:

x=9*

Step-by-step explanation:

48*+(5x-3)*+90*=180*    (its is 180* because it is a line)

5x+135*=180*        (combine like terms)

-135*       -135*    (subtract 135*)

5x=45*       (divide by 5)

x=9*

dont mind the asterisks they are my degree signs

hope this helps

brainliest?

[tex]f(x) = \frac{1}{3}x - 4 \\ [/tex]

[tex]y = \frac{1}{3}x - 4 \\ [/tex]

Subtract the sides of the equation plus 4

[tex]y + 4 = \frac{1}{3}x \\ [/tex]

Multiply the sides of the equation by 3

[tex]3(y + 4) = x[/tex]

[tex]3y + 12 = x[/tex]

So ;

[tex] {f}^{ - 1}(x) = 3x + 12 [/tex]

_________________________________

And we're done.

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

Answer:

13,646,514,108

I hope this helps!

Answer:

About 110,000 – 330,000 lbs.

Step-by-step explanation:

Your Welcome :)

Answer:

110,000 – 330,000 lbs

Step-by-step explanation:

I GOT CHU

Rate = distance / time.

Distance= 9/10

Time = 1/10

Rate = 9/10 divided by 1/10 which is 9.

9 meters per second.

540 meters per minute.

Answer:

117-40=77

Step-by-step explanation:

Subtract 40 from 117 to get the answer

Answer:

B.) 7.5

Step-by-step explanation:

I'm guessing that 7.5 is the radius. If so, the diameter is 15 in. because 7.5 + 7.5 = 15. The radius is half of the diameter.

Answer:

1731996

Step-by-step explanation:

i think thats the answer if not sorry hopefully i helped <3

Answer:

I can help you!

Step-by-step explanation:

3x7 you should add #7 3 times. That would be 21

9x8 you should add #8 9 times. That would be 72

12x9 you should add #9 12 times. That would be 108

Hope it helped

Answer:

Eliana saves at a greater rate because her unit rate of $42 per week is greater than Lana's unit rate of $40 per week

hope this helps =3

sorry if im wrong

Answer:

y= 3h

Step-by-step explanation:

make y the subject of the formular

Answer:

The answer is 6.25

Step-by-step explanation:

Root 38 is exactly 6.16441400297. That number estimated would be 6.20 since 6.16 is close to 6.20. The closest number to 6.20 is 6.25.

Answer: 3

Step-by-step explanation:

Answer:

Rise 3

Run 1

Step-by-step explanation:

Answer:

The answer is 6x-1=11

Answer:

B

Step-by-step explanation:

Answer:

[tex]b/3\geq 6[/tex]

Step-by-step explanation:

Answer:

b[tex]\geq[/tex]-18

Step-by-step explanation:

[tex]\frac{b}{-3}[/tex] [tex]\geq[/tex] 6 Solve this just like there is an equal sign instead of [tex]\geq[/tex]

Multiply both sides by -3 to get b by itself: b[tex]\geq[/tex]-18

Answer:

17.5 miles per hour

Step-by-step explanation:

A boat travels upstream on a Mississippi river for 3.5 hours

The return trip takes 2.5 hours

The boat travels 2 miles per hour faster downstream

Let y represent the speed that was travelled upsteam

3.5y = 2.5(y + 2)

3.5y = 2.5y + 5

3.5y - 2.5y = 5

y = 5

Therefore the distance travelled by the boat upstream can be calculated as follows

= 3.5 × 5

= 17.5 miles per hour

Answer:

4

Step-by-step explanation:

f(x) = 12 and f(x) = 3x

12/3 = 4 and the function for f(x) is 3(4)

The derivative of the function f(x) = 3x - 12 is 3.

Derivative of a function measures the rate of change of a function it can also be defined as the slope of the function.If given dy/dx it states the rate of change of y with respect to x.

According to the given question we have find the first derivative of the function f(x) = 3x - 12.

Given f(x) = 3x - 12

f'(x) = 1(3)x¹⁻¹ + 0                             ( derivative of any constant is 0 )

f'(x) = 3x⁰.

f'(x) = 3.

learn more about derivative here :

https://brainly.com/question/25324584

#SPJ2

Answer:

c

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer:

24m3−168m2+225m+30

Step-by-step explanation:

(3m+−6)(8m2+−40m+−5)

=(3m)(8m2)+(3m)(−40m)+(3m)(−5)+(−6)(8m2)+(−6)(−40m)+(−6)(−5)

=24m3−120m2−15m−48m2+240m+30

=24m3−168m2+225m+30

Answer:

y= 1/2 is the answer.

Step-by-step explanation:

Answer:

y = 2

Step-by-step explanation:

Answer:

804,642

Step-by-step explanation:

800,000 + 4,000 + 600 + 40 + 2.

Add the terms

804,642

PERIMETER IS ADDING ALL SIDES, AREA IS MULTIPLYING TWO SIDES

1. 2 1/9

2. 42.25

3. 4

4. 87

Answer:

perimeter is adding up all the outside line measures, so for the squares with only one side value, just multiply that by four

the other ones, for the measure given for one side, the opposite side is the same measure, so just add that up.  

so number one would be 9 and 1/3 (nine and one third)

Step-by-step explanation:

[tex](2x - 9) + (3x - 6) = 110[/tex]

[tex]2x + 3x - 9 - 6 = 110[/tex]

[tex]5x - 15 = 110[/tex]

Plus sides 15

[tex]5x - 15 + 15 = 110 + 15[/tex]

[tex]5x = 125[/tex]

Divided sides by 5

[tex] \frac{5}{5}x = \frac{125}{5} \\ [/tex]

[tex]x = 25[/tex]

Thus ;

A = 2 ( 25 ) - 9°

A = 50° - 9°

A = 41°

_________________________________

B = 3 ( 25 ) - 6

B = 75° - 6°

B = 69°

_________________________________

C + 110° = 180°

because it is a straight line.

Subtract sides 110°

C + 110° - 110° = 180° - 110°

C = 70°

_________________________________

And we're done.....♥️♥️♥️♥️♥️

Answer:

x<18

Step-by-step explanation:

Answer:

1.87 miles

Step-by-step explanation:

[let's say x = how many miles]

18.99 + 75x = 159.24 [write out the equation]

-18.99 -18.99 [subtraction property of equality]

75x = 140.25

___ ____ [division property of equality]

75 75

x = 1.87

I hope this helps ! :)

Answer:

the answer is: "a ratio is a comparison of two numbers or measurements

Answer:

y= 1/3x - 3

Step-by-step explanation:

The y-axis is -3

In order to find slope you do rise/run

Answer:

450

Step-by-step explanation:

subtract

Answer:

I am pretty sure 25%

Step-by-step explanation:

I had this question before

Answer:

3 - 2n

Step-by-step explanation:

Answer:

k=45

Step-by-step explanation:

Since the sum of the measures are 180 and the measures are 45 degrees, k degrees, and 2k degrees, we can conclude that [tex]45+2k+k=180[/tex]. 2k and k are like terms, so you can add 2k and k to get 3k.Then, you would have  [tex]45+3k=180[/tex]. Since you are finding k, you want to isolate k as best you can. To do this, you subtract 45 on both sides [tex]45-45+3k=180 -45 \\3k=135[/tex] as shown by the equation, 180-45 is 135. Then, you divide 3 on both sides to get k=45.