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almond37 [142]
3 years ago
5

3.5 times 4.9 using a area model

Mathematics
1 answer:
kobusy [5.1K]3 years ago
7 0

Answer:

17.15

Step-by-step explanation:

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A picture is 5 inches wide and 8 inches tall: A photographer wants to use a scale factor of 2.5 to ENLARGE a picture. What will
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First option 40 inch squared
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A store pays $113 for a swing set and marks the price up by 20%. What is the amount of
gtnhenbr [62]

Answer:

$22.6 markup

Step-by-step explanation:

Just find 20 percent of 113 and you’ll get 22.6

if you want price including the markup (final price) its $139.6

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3 years ago
A business owner pays $1,200 per month in rent and a total of $120 per hour in employee salary for each hour the store is open.
trapecia [35]
The breakeven point is that in which the total cost is just equal to the total revenue. In other words, the profit becomes zero. The revenue and cost will be given below.

(1) Total revenue = ($200)x

(2) Total cost = ($120)(x) + 1200

Equating,
     200x = 120x + 1200

Solving for x gives us an answer of 3.33

Hence, the answer is 3.33. 
3 0
4 years ago
PLZZZZZZZZZ NEED HELP ASAP QUESTION WORTH 20 POINTS
andrezito [222]

Part A: After 9 days the radius of algae was approximately 12.81 mm. The reasonable domain to point is (0,9).

Part B: The 9 on the y-intercept represents the amount of algae the experiment started with.

Part C:  (12.81-10.12)/7=0.38

5 0
3 years ago
A particle moves along the curve below. y = √ 8 + x 3 As it reaches the point ( 1 , 3 ) , the y -coordinate is increasing at a r
Dmitry [639]

Answer:

<em>The x-coordinate is changing at 10 cm/s</em>

Step-by-step explanation:

<u>Rate of Change</u>

Suppose two variables x and y are related by a given function y=f(x). If they both change with respect to a third variable (time, for instance), the rate of change of them is computed as the derivative using the chain rule:

\displaystyle \frac{dy}{dt}=\frac{dy}{dx}\cdot \frac{dx}{dt}

We have

y=\sqrt{8+x^3}

Or, equivalently

y^2=8+x^3

We need to know the rate of change of x respect to t. We'll use implicit differentiation:

\displaystyle 2y\cdot \frac{dy}{dt}=3x^2\cdot \frac{dx}{dt}

Solving for dx/dt

\displaystyle \frac{dx}{dt}=\frac{2y\cdot \frac{dy}{dt}}{3x^2}

Plugging in the values x=1, y=3, dy/dt=5

\displaystyle \frac{dx}{dt}=\frac{2(3)\cdot 5}{3\cdot 1^2}=10

The x-coordinate is changing at 10 cm/s

7 0
3 years ago
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