3 years ago

Identify axis of symmetry

Mathematics

2 answers:

astraxan [27]3 years ago

5 0

Axis of symmetry: x=3

Alchen [17]3 years ago

3 0

Answer:

x = 3

Step-by-step explanation:

The axis of symmetry is a vertical line passing through the vertex and midway between the zeros.

The zeros are x = 2 and x = 4

midway = $\frac{2+4}{2}$ = $\frac{6}{2}$ = 3

Equation of axis of symmetry is x = 3

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Length of a rectangle is 4 inches less than twice it’s width of the perimeter is 70 inches what’s the dimensions?

Vedmedyk [2.9K]

W= width
L= length= 2W-4
Perimeter= 70

FIND WIDTH:
P= 2(L + W)
P= 2L + 2W
substitute 2W-4 for L
70= 2(2W-4) + 2W
multiply 2 by all in parentheses
70= (2*2W) + (2*-4) + 2W
70= 4W - 8 + 2W
combine like terms
70= 6W - 8
add 8 to both sides
78= 6W
divide both sides by 6
13= W

FIND LENGTH:
substitute w=13 to find width
L= 2W-4
L= 2(13)-4
L= 26-4
L= 22

CHECK:
P= 2(L + W)
70= 2(22 + 13)
70= (2*22) + 2(13)
70= 44 + 26
70= 70

ANSWER:
length= 22 inches
width= 13 inches

Hope this helps! :)

3 0

3 years ago

Trip has 15 coins worth 95 cents.Four of the coins are each worth twice as much as the rest. Construct a math argument to justif

const2013 [10]

(11*5)+(4*10)=95
11+4=15
Both are equal to the constraints of the word problem and there for justified.

6 0

3 years ago

Danessa needs to compare the area of one large circle with a diameter of 8 to the total area of 2 smaller circles with a diamete

BaLLatris [955]

Answer:

The answer is: 1, 2, and 6

Step-by-step explanation: