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Black_prince [1.1K]
2 years ago
11

Expand & simplify5(9+6) + 3(9+3)​

Mathematics
1 answer:
Snowcat [4.5K]2 years ago
4 0

Answer:

<h2>HOPE IT WILL HELP UH</h2><h2>MARK ME AS A BRAINLIST AND FOLLOW ME </h2>

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The annual rate of depreciation, x, on a car that was purchased for $9,000 and is worth $4,500 after 5 years can be found using
Zolol [24]

Answer:


Step-by-step explanation:

We know that exponential formula of depreciation

A=P(1-x)^t

where

P is the initial amount

x is the interest rate

A is the amount after t years

we are given

The annual rate of depreciation, x, on a car that was purchased for $9,000

so, P=9000

we can plug value it

A=9000(1-x)^t

we are given

when x=5 , A=4500

so, we can plug it and solve for x

4500=9000(1-x)^5

\frac{9000\left(1-x\right)^5}{9000}=\frac{4500}{9000}

\left(1-x\right)^5=\frac{1}{2}

x=-\left(\frac{1}{2}\right)^{\frac{1}{5}}+1

x=0.12945

so, interest rate is 13%

now, we can plug x

and we get

A=9000(1-0.13)^t

A=9000(87)^t


Graph:


6 0
3 years ago
Read 2 more answers
Mike owes his brother $9.55. He borrows $10.75 more from his brother. Which of the following best represents Mike's debt to his
Radda [10]

Answer:

C - $20.30

Step-by-step explanation:

-9.55 + (-10.75) = - 20.3

8 0
2 years ago
Read 2 more answers
the diagram shows a rectangle four of these rectangles are put to together as shown calculate the shaded area
yawa3891 [41]

Answer:

42cm squared

Step-by-step explanation:

You are taking 2 x 0.5cm  of the smaller sides rectangles which is 1. Then what is left is 6x7 which is 42cm squared

6 0
3 years ago
8th grade math . Pythagorran practice <br>​
Serhud [2]

The answers according to rows are:

  • ROW 1 : diameter of base = 10,  base area = 25π, volume of cylinder = 175π    volume of cone = \frac{175}{3}π
  • ROW 2 : base radius = 3, base area = 9π, height = 40/3, volume of cylinder = 120π
  • ROW 3 : base radius = 6, base diameter = 12, height = 4, volume of cylinder = 144π

<h3>What is mensuration?</h3>

Mensuration is an aspect of geometry that deals with measurement of volumes and area.

Analysis:

Row 1

Diameter of base = 2 x radius = 2 x 5 = 10

Base area = πr^{2} = π(5)^{2} = 25\pi

Volume of cylinder = base area x height = 25π x 7 = 175π

Volume of cone  = 1/3 x volume of cylinder = 175π/3

Row 2

Base radius = base diameter/2 = 6/2 = 3

Base area = πr^{2} = π(3)^{2} = 9π

Volume of cone = 1/3 x base area x height

base area x height  = 3 x volume of cone

base area x height = 3 x 40π

Height = 120π/9π = 40/3

Cylinder volume = 3 x cone volume = 3 x 40π = 120π

Row 3

Base area = πr^{2}

36π =  πr^{2}

r2 = \sqrt{36}

r = 6

Base diameter = 2 x 6 = 12

Volume of cone  = 1/3 x base area x height

48π = 1/3 x 36π x height

Height = 4

Cylinder volume = 3 x 48 = 144π

In conclusion,

ROW 1 : diameter of base = 10,  base area = 25π, volume of cylinder = 175π

volume of cone = \frac{175}{3}π

ROW 2 : base radius = 3, base area = 9π, height = 40/3, volume of cylinder = 120π

ROW 3 : base radius = 6, base diameter = 12, height = 4, volume of cylinder = 144π

Learn more about mensuration: brainly.com/question/18541562

#SPJ1

4 0
2 years ago
1) Identify the slope of the given line
adell [148]

ok so here we go:

1) (-6,-2.5),(-4,-3)\ m= -0.25 or  -\frac{1}{4}

2 )y=-0.25x-4 so the answer is (0, -4) or -4

3) y=\frac{3}{2}x+1 m=\frac{3}{2}

4) y=[tex]\frac{3}{2}x+1[tex] so the answer is (0, 1) or 1

8 0
3 years ago
Read 2 more answers
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