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lukranit [14]
3 years ago
15

Chứng minh mệnh đề sau bằng phương pháp phản chứng:

Mathematics
1 answer:
GalinKa [24]3 years ago
4 0

Answer:

Which language is this ?????

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What is the area of 4 yards, 4 yards 7 yards,13 yards?
enyata [817]

Answer: 5,824 yards

Step-by-step explanation: A=lw

A = 4 x 4 x 7 x 13

A = 5824

5,824 yards

3 0
3 years ago
A triangle is to be dilated with the origin as the center of dilation and with a scale factor of 2. Which answer choice correctl
saveliy_v [14]

Answer:

All the coordinates are changed to

(x, y) ⇒ (2x, 2y)

Step-by-step explanation:

Given - A triangle is to be dilated with the origin as the center of dilation and with a scale factor of 2.

To find -  Which answer choice correctly maps this dilation algebraically?​

Proof -

Let ABC is a triangle where A, B, C are the vertices of the triangle respectively.

Now,

Let the coordinates be (x, y)

If a triangle is to be dilated with the origin as the center of dilation and with a scale factor of a , then the coordinated be changes as

(x, y) ⇒ (ax, ay)

Here given , a = 2

So, all the coordinates are changed to

(x, y) ⇒ (2x, 2y)

3 0
3 years ago
What is 9 x 100 + 8 x 10 + 7 x 1000
mr Goodwill [35]

Answer:

9 x 100 + 8 x 10 + 7 x 1000 = 7,980

6 0
3 years ago
Blossom typed 1/8 of her report on Monday. She typed 1/4 of the report of Tuesday. How much of the report does she need to type
DochEvi [55]

Answer:4

Step-by-step explanation:

4 0
3 years ago
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A car servicing station is running a special offer. The breakdown of the cost for different services is given below.
ohaa [14]

Answer:

C. It is the total cost of the membership fee and the tire pressure check for 12 months.

Step-by-step explanation:

The constant represents the sum of costs that are <em>not</em> "per car." Those are only "membership fee" ($50) and "tire pressure check" ($15/mo × 12 mo = $180).

3 0
3 years ago
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