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Step2247 [10]
3 years ago
7

Which shows rotational symmetry?

Mathematics
2 answers:
s344n2d4d5 [400]3 years ago
4 0
It is actually the top one on the second picture because if you were to rotate it 180 degrees, it would end up on the same points
Nostrana [21]3 years ago
3 0

Answer:

The answer is A

Step-by-step explanation:

I took the test on edg

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By what number should I multiply 1 1/4 to obtain 3/4
aleksklad [387]
Multiply by 3/5 (three fifths)
4 0
3 years ago
How would I find the slope and y-intercept of y+3=x? I'm familiar with slope and y-intercept already, but I can't figure it out
butalik [34]

Answer: \mathrm{Slope\:of\:}y+3=x:\quad m=1

5 0
2 years ago
Determine which equation is written in function form:
Mila [183]

<em>Greetings from Brasil... </em>

A 1st degree function can be written in two ways:

F(X) = AX + B

or

Y = AX + B

note that F(X) = Y

So, looking at the alternatives in the question, only Y = 7X/3 - 8 is equivalent to Y = AX + B, where:

A = 7/3

B = - 8

then

\large{\boldsymbol{\mathbf{Y = \frac{7X}{3}-8\Leftrightarrow Y=AX+B}}}   <em>a function of the 1st degree</em>

answer:

<h2>Y = (7/3)X - 8</h2>
7 0
3 years ago
Help me please i reallly need it​
xxMikexx [17]

Answer:

a) A = 64(2s - 1)

b) A = 1,856 cm²

Step-by-step explanation:

Given the side of the frame, 8s, and that the border that frames the picture is 4 on either side = 8:

<h3>a) Find an expression for the area of the frame, in factored form. </h3>

A = area of the square frame

A₁ = Total area (including the picture inside the frame) = (8s)²

A₂ = Area of the picture inside the frame = 4 + 4 = (8s - 8)²

To find the area of the frame, subtract the area of the picture from the total area.

A = A₁ - A₂

A = (8s)² - (8s - 8)²

Perform the necessary exponential operations:

A = 64s²- (64s² - 64s - 64s + 64)

A = 64s²- (64s² - 128s + 64)

A = 64s²- (64s² - 128s + 64)

Distribute -1 into the parenthesis:

A = 64s²- 64s² + 128s - 64

Combine like terms:

A = 0 + 128s - 64

A = 128s - 64

Factor out 64:

A = 64(2s - 1)

The expression for the area of the frame in factored form is: A = 64(2s - 1).

<h3>b) Determine the area of the frame when s = 15cm</h3>

Using the same expression from part A:

A = 64(2s - 1)

Substitute s = 15 into the expression:

A = 64[2(15) - 1]

A = 64(30 - 1)

A = 64(29)

A = 1,856 cm²

Therefore, the area of the frame that has a side of 15 cm is: A = 1,856 cm²

6 0
2 years ago
Please help me solve question 5.) with the letters a) &amp; b)
tatyana61 [14]

Answer:

Step-by-step explanation:

5.(a)

x²+6x-15=0

x=\frac{-6\pm\sqrt{36+4*15}}{2*1}\\x=\frac{-6\pm\sqrt{36+60} }{2}\\x=\frac{-6\pm\sqrt{96} }{2}\\x=\frac{-6\pm4\sqrt{6} }{2}\\x=-3\pm2\sqrt{6}

(b)

4x²-8x-1=0

x=\frac{8\pm\sqrt{64+4*4}}{2*4}\\x=\frac{8\pm\sqrt{80}}{8}\\x=\frac{8\pm 4\sqrt{5} }{8}\\x=\frac{2\pm\sqrt{5}}{2}

7 0
2 years ago
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