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OleMash [197]
3 years ago
7

Choose the shape that has exactly three lines of symmetry.

Mathematics
2 answers:
saul85 [17]3 years ago
8 0

Answer:

an EQUILATERAL triangle!!

NikAS [45]3 years ago
3 0

Answer:

Equilateral Triangle

Step-by-step explanation:

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3 2/6 + ( 2 1/6 + 4/6 )
stellarik [79]

Answer:

5 7/6 or 6 1/6 either one works they are the same number just one is not simplified

3 0
3 years ago
What is one of the solutions to the following equations? y2+x2=53<br> Y-x=5
Olenka [21]
(1)  y² + x² = 53
(2)  y - x = 5 ⇒ y = x + 5

subtitute (2) to (1)

(x + 5)² + x² = 53      |use (a + b)² = a² + 2ab + b²

x² + 2x·5 + 5² + x² = 53

2x² + 10x + 25 = 53     |subtract 53 from both sides

2x² + 10x - 28 =0     |divide both sides by 2

x² + 5x - 14 = 0

x² - 2x+ 7x - 14 = 0

x(x - 2) + 7(x - 2) = 0

(x - 2)(x + 7) = 0 ⇔ x - 2 = 0 or x + 7 = 0 ⇔ x = 2 or x = -7

subtitute the values of y to (2)

for x = 2, y = 5 + 2 = 7
for x = -7, y = 5 + (-7) = 5 - 2 = 3

Answer: x = 2 and y = 7 or x = -7 and y = 3
4 0
3 years ago
Write the numbers in order from least to greatest. 8/10, -.82, 2.5, -9.5
Art [367]

Answer: -9.5, -.82, 8/10, 2.5

Step-by-step explanation:

-9.5 is the least because the bigger the negative number is the smaller it's value is (opposite of positive numbers)

-.82 same thing

8/10 or .8

2.5 same thing as 2.50 so what is greater $2.50 or $0.80 exactly 2.50 is greater so it's the greatest

6 0
3 years ago
100 points if you can solve this for me
Amanda [17]

Answer:

5 feet

Step-by-step explanation:

i know it is, i'm a straight A student in math :D

i just don't know how to explain-

8 0
3 years ago
PLS HELP, HOMEWORK. (15 points)
Norma-Jean [14]

Answer:

3. ???? (3 but that's incorrect)

4. 75 D

Step-by-step explanation:

Use PEMDAS ()^x/+-

4 0
3 years ago
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