The simple interest on a sum of money is 25% of the rate percent per annum find the rate

I need help with premetier and area for 7 8 9

SCORPION-xisa [38]

The answers to the three shapes are:

Figure 7; perimeter = 16.2mm, area = 12.64 square mm

Figure 8; perimeter = 15.2inches, area = 9.61 square inches

Figure 9; perimeter = 21.47yards, area = 16.81 square yards

<h3>What is the perimeter of a shape?</h3>

Perimeter is the outside boundary of a plane shape.

Analysis:

for figure 7, perimeter = s + s + s = 3s = 3(5.4) = 16.2mm

Height of triangle = $\sqrt{((5.4)^{2} - (2.7)^{2} }$ = 4.68

Area of triangle = 1/2 base x height = 1/2 x 5.4 x 4.68 = 12.64 $mm^{2}$

For figure 8, perimeter = b + b + a = 5.9 + 5.9 + 3.4 = 15.2 inches

Height of triangle = $\sqrt{(5.9)^{2} - (1.7)^{2} }$ = 5.65inches

Area of triangle = 1/2 base x height = 1/2 x 3.4 x 5.65 = 9.61 $inches^{2}$

For figure 9, perimeter = b + a + c = 8.2 + 4.1 + 9.17 = 21.47yards

Area of triangle = 1/2 x base x height = 1/2 x 8.2 x 4.1 = 16.81 $yards^{2}$

In conclusion, the perimeter and area of the given shapes are:

Figure 7; perimeter = 16.2mm, area = 12.64 square mm

Figure 8; perimeter = 15.2inches, area = 9.61 square inches

Figure 9; perimeter = 21.47yards, area = 16.81 square yards

Learn more about perimeter of plane shapes: brainly.com/question/2569205

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5 0

2 years ago

A bag contains 4 red marbles, 3 blue marbles and 7 green marbles. If three marbles

shepuryov [24]

Answer:

20%

Step-by-step explanation:

4+3+7=14

14÷7=2

2×10=20

If I am wrong please tell me I haven't had to do this me method in 3 years

6 0

3 years ago

The Ruler below shows 7-inches segment divided into 2 equal parts. What is the length of one of those parts. Fill in the blanks

ella [17]

Answer:

$3\frac{1}{2}$

Step-by-step explanation:

If the ruler is divided into 2 equal parts, divide 7 inches by 2

7/2 = 3.5 or 3 $\frac{1}{2}$

8 0

3 years ago

The sum of four consecutive odd integerd is -72.

Solnce55 [7]

n, n + 2, n + 4, n + 6 - four consecutive odd integers

-72 - the sum

The equation:

n + (n + 2) + (n + 4) + (n + 6) = -72

n + n + 2 + n + 4 + n + 6 = -72

4n + 12 = -72 |subtract 12 from both sides

4n = -84 |divide both sides by 4

n = -21

n + 2 = -21 + 2 = -19

n + 4 = -21 + 4 = -17

n + 6 = -21 + 6 = -15

Answer: -21, -19, -17, -15.

8 0

4 years ago

4. The population of Bay Village is 35,000 today. Every year the

frosja888 [35]

Answer:

Linear Model: y(x)=35,000+750x

Step-by-step explanation:

In principle Linear Models are employed when we want to define a relationship between an independent and a dependent variable. Linear Models are also known as Functions , where one variable is expressed as a function of at least one other variable. The most common example would be a dependent variable $y$ that is directly linked as a response to any changes of an independent variable $x$ . The most common expression of such relationship would be $y=ax$ where $a$ is the relationship factor between $y$ and $x$ and is also known as the slope of the function (representing a rate of change of that function).

In this question we are told that the population of Bay Village today is 35,000. So we know this is our constant variable, lets call it $b$ .

Next we know that every year the population is increased by 750 people. So we know that our variable and thus our independent variable is every year which we shall call $x$ and our fixed factor is the 750 increment which we will call $a$ .

From that we can conclude that:

Year 1 Population: 35,000

Year 2 Population: 35,000 + 750 = 35,750

Year 3 Population: 35,750 + 750 = 36,500

And so on and so forth.

So we want to express the above as a Linear Model of the form:

$y = ax + b$ Eqn(1).

Thus from Eqn (1) and all information given (i.e. pluging in values) we finally obtain:

$y(x)=35,000+750x$

Which for every different value of $x$ (i.e. every year) we can obtain the new and increased population $y(x)$ .

7 0

3 years ago

The simple interest on a sum of money is 25% of the rate percent per annum find the rate​

The simple interest on a sum of money is 25% of the rate percent per annum find the rate