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Hitman42 [59]
3 years ago
11

Before you can make a pie chart you need to figure out how much of the circle belongs to each category. Suppose that you earned

$6.00 doing odd jobs. You spent your money in this manner: Tithe$ 0.60 Missions$ 0.40 Recreation$ 1.80 Savings$ 2.40 School supplies$ 0.80 Remembering the formula, (category total) x 360°, you can figure out each part. For example: 60/600 x 360° = 36° Changing the dollars to cents saves confusion with the decimal point. Following thisformula tells us that, when we make our pie chart, 36° of the graph should belong tothe category of ​tithe.
Mathematics
1 answer:
svetoff [14.1K]3 years ago
4 0

Answer:

missions-24

recreation-108

savings-144

school supplies-48

tithe-36

Step-by-step explanation:

so first convert all the given costs to cents by multiplying each amount with 100 then add all of them to get the total as 600

in a pie chart we know that it's a circle and all angles within the circle must add up to 360 so to get an angle for a certain cost that will represent it in the chart you have to take that cost over the total to get the fraction of the circle it will occupy multiplied by 360 to get it in degrees or which portion of 360 will it occupy hence

60/600×360=36

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3 years ago
Linda is twice the age of Vera.
Paladinen [302]

Answer:

Tanya is 20 years old

Step-by-step explanation:

Let the age of Vera = x years

The age of Linda is twice the age of Vera = 2x years

Tanya  is four less than four times the age of Linda = 4(2x)-4 = 8x-4

Total age of Vera, Linda and Tanya is:

x+2x+8x-4

Combine the like terms:

11x-4

But now their total age is two more than nine times the age of Vera:

11x-4 = 9x+2

Solve the expression

Combine the like terms:

11x-9x=2+4

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Divide both the sides by 2

2x/2 = 6/2

x= 3

Thus the age of Vera is 3 years.

The age of Linda is 2x= 2*3 = 6 years

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"A student made the following chart to prove that AB2 + BC2 = AC2.
katovenus [111]

Step 3 has an error.

Step-by-step explanation:

Similarity-criteria of triangles:

1. All the corresponding angles of two triangles should be equal.

2. The ratio between the corresponding sides of two triangles should be equal.

In \triangle ABC and \triangle BDC  

\angle BAC = \angle DBC \\\angle ACB = \angle BCD

All the angles of triangle are equal.

∴\triangle ABC \sim \triangle BDC

Since, \triangle ABC \sim \triangle BDC

\frac{AC}{BC}=\frac{AC}{DC}

BC^{2}=AC \times DC

In \triangle ABC and \triangle BDA,

\fbox{\begin\\ \angle ABC= \angle BDA = 90^{\circ}\end{minispace}}

\fbox{\begin \\\angle BAC = \angle BAD\\\end{minispace}}

\angle ACB = \angle ABD

All the angles of triangle are equal.

∴\fbox{\begin\triangle ABC \sim \triangle BDA \end{minispace}}

∵\triangle ABC \sim \triangle BDA  

\frac{AC}{AB}=\frac{AB}{AD}

AB^{2}=AC \times AD

Now, AB^{2}+BC^{2} can be simplified as,

AB^{2}+BC^{2}=AC \times AD+AC \times DC\\AB^{2}+BC^{2}=AC(AD+DC)\\AB^{2}+BC^{2}=AC(AC)\\AB^{2}+BC^{2}=AC^{2}

Learn more:

1. Find the height of the triangle?

brainly.com/question/12989306

2. Which undefined term is needed to define an angle? brainly.com/question/3717797

3. Look at the figure, which trigonometric ratio should you use to find x? brainly.com/question/9880052

Answer Details

Grade: Junior High School

Subject: Mathematics

Chapter: Triangle

Keywords: triangle, similar, similarity, ratio of sides, right triangle, similar triangle, ratio of sides, equal angles, square of hypotenuse, sum, square of legs, sum of square of legs

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If 5/6 < 1/2x - 1/2y < 3/2 , then what is one possible value of x-y ?
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Answer:321

Step-by-step explanation:

8 0
2 years ago
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