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MrMuchimi
3 years ago
14

Hi, this is apart of my homework assignment!

Mathematics
1 answer:
Hunter-Best [27]3 years ago
5 0

Answer:

Percent Change is 16%

The change is increased.

Step-by-step explanation:

The original amount = 25

Amount increase = 4

We need to find percent increase

The formula used is: \frac{Amount \ increased}{Original \ Amount}*100

Putting values in formula

Percent \ Change = \frac{Amount \ increased}{Original \ Amount}*100\\Percent \ Change =\frac{4}{25}*100\\Percent \ Change =16 \%

So, Percent Change is 16%

The change is increased.

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You get a haircut that costs $23. You want to tip the barber 10%. How much tip will you leave him?
charle [14.2K]

Answer:

$2.30

Step-by-step explanation:

Multiply 23 by .10 to get 2.3

2.3 is 2 dollars and 30 cents

8 0
3 years ago
Read 2 more answers
HELP ME!!!
larisa [96]

Answer:

  -2, 8/3

Step-by-step explanation:

You can consider the area to be that of a trapezoid with parallel bases f(a) and f(4), and width (4-a). The area of that trapezoid is ...

  A = (1/2)(f(a) +f(4))(4 -a)

  = (1/2)((3a -1) +(3·4 -1))(4 -a)

  = (1/2)(3a +10)(4 -a)

We want this area to be 12, so we can substitute that value for A and solve for "a".

  12 = (1/2)(3a +10)(4 -a)

 24 = (3a +10)(4 -a) = -3a² +2a +40

  3a² -2a -16 = 0 . . . . . . subtract the right side

  (3a -8)(a +2) = 0 . . . . . factor

Values of "a" that make these factors zero are ...

  a = 8/3, a = -2

The values of "a" that make the area under the curve equal to 12 are -2 and 8/3.

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<em>Alternate solution</em>

The attachment shows a solution using the numerical integration function of a graphing calculator. The area under the curve of function f(x) on the interval [a, 4] is the integral of f(x) on that interval. Perhaps confusingly, we have called that area f(a). As we have seen above, the area is a quadratic function of "a". I find it convenient to use a calculator's functions to solve problems like this where possible.

5 0
3 years ago
Aaron made a picture frame with the dimensions shown in the figure. What is the area of the picture frame? 120 square centimeter
Temka [501]
72 square centimeters because 
<span>(12×10)−(8×6)</span>
<span>120−48</span>
<span>72</span>
7 0
3 years ago
Read 2 more answers
X=<br> Length=<br> Width=<br> WILL GIVE BRAINLIEST + 5 star
babymother [125]

Answer:

x = 20

Length = 20ft

Width = 12ft

Step-by-step explanation:

A = 240

x^2 - 8x = 240

x^2 - 8x - 240 = 0

x^2 - 20x + 12x - 240 = 0

x(x-20) + 12(x-20) = 0

(x+12)(x-20) = 0

x = 20

x = -12 (which we discard since x is a length)

So the dimensions are 20ft and 20-8 = 12ft

7 0
3 years ago
What is 300% of 3?<br> A) 0.09 B) 0.9 C) 9 D) 900
Goshia [24]
Your answer is 9 I think
8 0
3 years ago
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