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3 years ago

The center of the circle is O. Find the measure of angle BDE *

Mathematics

2 answers:

lorasvet [3.4K]3 years ago

7 0

Answer:

90 (angle in a semicircle)

Aleksandr [31]3 years ago

7 0

Good morning ☕️

Answer:

m∠BDE = 90°

Step-by-step explanation:

We notice that the segment BE is a diameter of the circle

and D is a point of the circle different from points B and E

therefore m∠BDE = 90°

__________________

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Nila uses the equation c=8h to figure out the total amount c she should charge a customer if she babysits for h hours.

nydimaria [60]

Answer:

c = 10h

Step-by-step explanation:

c = 8h

Where,

c = Total amount she should charge a customer

h = Number of hours

8 = amount charged per hour of babysitting

A. 8 is the constant of proportionality and it means Nila charges $8 per hour of babysitting

B. If she decides to increase the rate she charges customers by $2 per hour, then the new equation she should use to determine how much to charge her customers is:

c = (8 + 2)h

c = 10h

3 0

3 years ago

If an object has a Mass of 11g and a volume fo 13mil, what is its density?

tino4ka555 [31]

Step-by-step explanation:

Mass (m) = 11 g

volume (v) = 13 ml

density (d) = ?

We know density is defined as mass per unit volume so

d = m / v

= 11 / 13

= 0.85 g/ml

Density (d) = 0.85 g/ml

5 0

3 years ago

Read 2 more answers

Polygon CCC has an area of 404040 square units. K 2ennan drew a scaled version of Polygon CCC using a scale factor of \dfrac12 1

nikdorinn [45]

Answer:

Area of polygon D = 10 square units

Step-by-step explanation:

Given:

Polygon C has an area of 40 square units.

It is scaled with a scale factor of $\frac{1}2$ to form a new polygon D.

To find:

The area of polygon D = ?

Solution:

When any polygon is scaled to half, then all the sides of new polygon are half of the original polygon.

And the area becomes one-fourth of the original polygon.

Let us consider this by taking examples:

First of all, let us consider a right angled triangle with sides 6, 8 and 10 units.

Area of a right angled triangle is given by:

$A = \dfrac{1}{2} \times Base \times Height\\\Rightarrow A = \dfrac{1}{2} \times 6 \times 8 = 24\ sq\ units$

If scaled with a factor $\frac{1}{2}$ , the sides will be 3, 4 and 5.

New area, A':

$A' =\dfrac{1}{2} \times 3 \times 4 = 6\ sq\ units = \dfrac{1}4\times A$

i.e. Area becomes one fourth.

Let us consider a rectangle now.

Sides be 8 and 10 units.

Area of a rectangle, A = $Length \times Width$ = 8 $\times$ 10 = 80 sq units.

Now after scaling, the sides will be 4 and 5 units.

New Area, A' = 4 $\times$ 5 =20 sq units

So, $\bold{A' = \frac{1}4 \times A}$

Now, we can apply the same in the given question.

$\therefore$ Area of polygon D = $\bold{\frac{1}{4}}$ $\times$ Area of polygon C

Area of polygon D = $\bold{\frac{1}{4}}$ $\times$ 40 = 10 sq units

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3 years ago

the expression 5n + 2 can be used to find the total cost in dollars of bowling where n is the number of games bowled and the 2 i

gogolik [260]

5(3)+2
15+2
17 monies

Just plug the amount of games in for n

8 0

3 years ago

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Kate wants to build a fence around her yard. The width of the yard is one-third the length. The perimeter of the yard is 80 feet

bezimeni [28]

The length would be 30 feet, and the width would be 10 feet.

4 0

3 years ago