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Pavlova-9 [17]
2 years ago
13

Suppose a study of population 400,000 has been growing at rate of 7% per year if this rate continues find the population of this

city in 10 years the population in 10 years will be approximately
Mathematics
1 answer:
inessss [21]2 years ago
4 0

Answer:

680,000

Step-by-step explanation:

Population before growing rate: 400,000

Growing rate: 7%

Duration: 10 years

___

First, you will have to calculate how much does the population increase each year with the said rate, so you will have to multiply the rate by the population to determine that amount.

400,000 x 7/100 = 28,000

So the population increases by 28,000 each year, now you will have to multiply that amount by the amount of years to determine how much the amount of increase.

28,000 x 10 = 280,000

This means that the population has increased by 280,000 in these 10 years. Finally, you will have to add that number to the population amount to get the answer.

400,000 + 280,000 = 680,000

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both are 50% chance

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What is the value of the expression? -2/5 - 3/7 * 7/10 =
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Order of operations
PEMDAS
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5 0
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3 years ago
Find the vertex and y intercept of the quadratic function​
riadik2000 [5.3K]

Answer:  5) Vertex = (2, 28)   y-intercept = 40  → (0, 40)

               6) Vertex = (2, 11)     y-intercept = 7    → (0, 7)

<u>Step-by-step explanation:</u>

The y-intercept of the equation is when x = 0. It is the c-value when given in standard form: y = ax² + bx + c

To find the vertex, use the Axis of Symmetry equation to find the x-value

x = -b/(2a). Then plug the x-value into the equation to find the y-value.

5) y = 3x² - 12x + 40

         ↓       ↓       ↓

     a=3    b= -12  c=40

\text{AOS:}\quad x=\dfrac{-b}{2a}\quad =\dfrac{-(-12)}{2(3)}\quad =\dfrac{12}{6}\quad =2

Min:  y = 3(2)² - 12(2) + 40

           = 3(4)  - 24 + 40

           = 12 - 24 + 40

           = 28

Vertex: (2, 28)    y-intercept = 40

*******************************************************************************************

6) y = -x² + 4x + 7

         ↓      ↓      ↓

    a= -1    b=4  c=7

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           = -(4)  + 8 + 7

           = -4 + 8 + 7

           = 11

Vertex: (2, 11)    y-intercept = 7

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You have 45 meters of yarn. You intend to create 7 art projects using the same amount of yarn in each project. Which answer show
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45 divided by 7 = 6 3/7

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