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vodomira [7]
4 years ago
5

Solve for x: 4(x-5) 8 =9y x = [?]y+[ ]

Mathematics
1 answer:
Katarina [22]4 years ago
3 0

Answer:

Step-by-step explanation:

Ok so this is it, then:

\frac{4(x-5)}{8}=9y First distribute the 4 into the parenthesis to get rid of them.  This gives you:

\frac{4x-20}{8}=9y Now undo the division of 8 by multiplying both sides by 8 to get:

4x - 20 = 72y  Add 20 to both sides to get:

4x = 92y so

x = 23y

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The height of a tree increases by 60% each year. When planted the tree was 40cm tall. How tall will the tree be in 5 years time.
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Answer:

≈419.4 cm.

Step-by-step explanation:

To solve this problem, you will need to set up an exponential graph as shown:

y= 40 ·(1.6)^{x}

The 40 represents the initial height of the tree, while (1.6) represents the annual growth rate. 'x' represents the amount of years elapsed.

We can simply solve this by substituting 5 for x:

y= 40· (1.6)^{5}

y ≈ 419.4 cm.

8 0
3 years ago
A ball is thrown vertically upward. After t seconds, its height h (in feet) is given by the function h(t)=92t-16t^2. What is the
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Answer:

132.25 feet

Step-by-step explanation:

Since the function is a quadratic representing height, and the coefficient of the t² is negative, the vertex of the parabola will be the maximum height achieved by the ball.  

The general form for a quadratic equation is ax² + bx + c,

here a is -16, and b is 92

To find the x coordinate of the vertex, use   x = -b/(2a)

We have x = -92/[2(-16)]

             

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Now plug that into the equation to find the y value, which will be the height...

y = 92(23/8) - 16(23/8)²

    y = 2116/8 - 16(529/64)

        y = 1058/4 - 529/4

              y = 529/4

                     y = 132.25

6 0
3 years ago
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<u>Answer:-</u> ∆ MAN =~ ∆ PET

<em>Additional</em><em> comment</em><em>:</em>

SAS Property:-

In two triangles , The two sides and the included angle are equal to the corresponding two sides and the included angle of the second triangle then they are congruent and this property is called Side-Angle-Side (SAS) Property.

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3 years ago
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