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saul85 [17]
3 years ago
10

Simplify the following expression:

Mathematics
1 answer:
kipiarov [429]3 years ago
8 0

Answer:

The answer is 3

Step-by-step explanation:

5^2=25-4=21

5+2=7

21 divided by 7 equals 3.

If you are not looking for the answer, the simplified expression would be 21/7

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Our pool is twice as long as it is wide and is surrounded by a walkway of uniform width of 1 foot. The
Zigmanuir [339]

Step-by-step explanation:

x=width of pool

2x=length of pool

the dimensions of the rectangle forming the walkway and the pool are x+4 and 2x+4

the area of this rectangle minus the area of the pool is 196 square feet

(2x+4)(x+4)-(x)(2x)=196

2x^2+4x+8x+16-2x^2=196

combine similar terms

12x+16=196

12x=196-16

12x=180

x=180/12

x=15 feet is the width of the pool

check: 34*19-30*15=196

646-450=196

196=196

8 0
3 years ago
A Norman window has a length of 3 ft and width of 4 ft find the area of the rectangular piece of the glass
KengaRu [80]

Area= Length * Width

3*4= 12

Answer: 12ft^2

7 0
3 years ago
An horse gallops 200ft turns and trots 350ft turns again and travels 410ft
bija089 [108]

The area of the triangle formed by his path is 34971.98 ft sq to the nearest hundredth.

<h3>What is the Heron's formula?</h3>

The Heron's formula is given as;

√s(s-a)(s-b)(s-c)

where s is half the perimeter of the triangle

WE have been given that horse gallops 200ft, turns and trots 350ft, turns again and travels 410ft to return to the point he started from.

Perimeter of the triangle is given as = 200 + 350 + 410 = 960 ft

Semi perimeter =  960 ft/ 2 = 480 ft

Area =  √s(s-a)(s-b)(s-c)

Area =  √480 (480 -200)(480 -350)(480 -410)

Area =  √480 (280)(130)(70)

Area =  √480 (2548000)

Area = 34971.98

The area of the triangle formed by his path is 34971.98 ft sq to the nearest hundredth.

Learn more about the Heron's formula;

brainly.com/question/20934807

#SPJ1

The complete question is

A horse gallops 200ft, turns and trots 350ft, turns again and travels 410ft to return to the point he started from. What is the area of the triangle formed by his path? round to the nearest hundredth.

6 0
1 year ago
What is 5 + 72?<br><br> a 81<br> b 72<br> c 5<br> d 62
maxonik [38]

The answer is 77 but i don't see it as an option here ;/

6 0
3 years ago
Multiple samples of students were asked four questions, with the sampling variability of their answers to question 4 being the h
iogann1982 [59]
The variability measures the closeness of the individual data provided. So, the most reliable sampling is the one with the lowest variability. 

For this case, the question with the lowest sampling variability is question 3. Therefore, we can conclude that the answers to which of the questions are most reliable is question 3. 
4 0
3 years ago
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