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IRISSAK [1]
4 years ago
7

Read and write a paragraph. Write a short description, using complete sentences in Spanish, telling a family member about a clas

s you have. Use the vocabulary from this lesson and the following instructions as a guide. You may copy and paste the accented and special characters from this list if needed: Á, á, É, é, Í, í, Ó, ó, Ú, ú, ü, Ñ, ñ, ¡, ¿. *Note: The sample sentences in parentheses are just a guide to help you form your sentences. You must come up with your own original answers keeping academic integrity intact. In one sentence, state a class you have in the morning. Remember to use the yo form of the verb tener. (e.g., I have math class in the morning.) State at what time the class starts. Remember to use the correct form of the verb empezar and that the numbers used to tell the time should be in words. (e.g., The class starts at ten a.m.) State at what time the class ends. Remember to use the correct form of the verb terminar and that the numbers used to tell the time should be in words. (e.g., The class ends at eleven a.m.) State whether you are early, on time, or late for the class. (e.g., I am on time.) Can someone help
Mathematics
1 answer:
inessss [21]4 years ago
3 0

Answer:

yes

Step-by-step explanation:

sorry im not the brightest i just need points

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Find the perimeter of a rectangle whose length is 3 cm greater than its height, and whose area is 40 cm².
jonny [76]

Answer: 26\ cm

Step-by-step explanation:

The perimeter of a rectangle can be calcualated with this formula:

P=2l+2h

Where "l" is the lenght and "h" is the height.

 The area of a rectangle can be found with this formula:

A=lh

Where "l" is the lenght and "h" is the height.

In this case we know that:

A=40\ cm^2

Therfore, we can susbsitute them into A=lh and solve for "h" in  order to find its value:

40=(h+3)h\\\\40=h^2+3h\\\\h^2+3h-40=0

Find two number whose sum is 3 and whose product is -40. These are -5 and 8. Then, factorizing, we get:

(h-5)(h+8)=0\\\\h_1=5\\\\h_2=-8

The positive value is the height. Then:

h=5\ cm

Since the length is 3 centimeters greater than its height, we get that this is: Then:

l=5\ cm+3\ cm\\\\l=8\ cm

Substituting values into P=2l+2h, we get that the perimeter is:

P=2(8\ cm)+2(5\ cm)\\\\P=26\ cm

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Each equation below is followed by several stories.
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Step-by-step explanation:

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