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Andre45 [30]
3 years ago
11

In which figure is DE BC

Mathematics
1 answer:
stepan [7]3 years ago
4 0

Answer:

Given: DB = 7.2 cm, AE = 1.8 cm and EC = 5.4 cm and DE || BC.

DB

AD

=

AC

AE

[by basic proportionality theorem which states that if a line is drawn parallel to one side of a triangle the other two sides in distinct points, then the other two sides are divided in the same.

7.2

AD

=

5.4

1.8

AD=

5.4

7.2×1.8

AD=

10

24

⟹AD=2.4cm

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Using mental math, the approximate tip to leave for a bill of $81.79, if you tip 15% would be _____..a.$8.20b.$10.30c.$12.30d.$1
ASHA 777 [7]

Answer:

Using mental math, the approximate tip to leave for a bill of $81.79, if you tip 15% would be?

c.$12.30

Step-by-step explanation:

10% is $8.179, then 5% is a half of this sum, i.e. $8.179:2=$4.0895

3. 15%=10%+5% and in $ it is $8.179+$4.0895=$12.2685 that is nearly $12.30.

8 0
3 years ago
multiply the following number using the distributive property the equation are 2×38 and this is the grid that is just an example
levacccp [35]

                                         30                                              8
     +------------------------------------------------------------+-------------------+
     I                                                                         I                        I
 2  I                                2 * 30                                I        2 * 8        I
     I                                                                         I                        I
     +------------------------------------------------------------+-------------------+


The entire large rectangle above is 38 units long and 2 units wide.
Its area is length times width, so the area is 2 * 38.
38 is also the same as 30 + 8, so the area can also be written as 2(30 + 8).

The left rectangle is 30 units long and 2 units wide. Its area is 2 * 30.
The right rectangle is 2 units long and 8 units wide. Its area is 2 * 8.

If you add the areas of the small rectangles, you get
2 * 30 + 2 * 8

If you add the two small areas, you get the area of the laerge rectangle, so

2(30 + 8) = 2 * 30 + 2 * 8

which is an example of the distributive property.
5 0
3 years ago
How to find the distance between the two parallel lines: y=2x-3 and y= 2x+7
Eddi Din [679]

Answer:

Distance is 10

Step-by-step explanation:

distance between y1=2x-3 and y2= 2x+7

y2 - y1 = (2x +7) - (2x - 3) = 10

3 0
3 years ago
Read 2 more answers
Mrs. Smith has 17 crayons and 15 rulers in her desk. What is the ratio<br> of crayons to rulers?
Lyrx [107]

Answer:

17 to 15

Step-by-step explanation:

17 crayons to 15 rulers

Other possible answers:

17/15

17:15

Hope this helps you!

3 0
3 years ago
*****WILL GIVE BRAINLEST IF CORRECT******
PSYCHO15rus [73]

Conner's work is correct. To combine and make it simple, you Multiply:

(3^5+9)+(6^8+10) which will equal 3^14 6^18.

But Jane's work, instead of adding, Jane multiplies. So, Conner is correct.

Hope that helped!

5 0
3 years ago
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