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wolverine [178]
4 years ago
13

True or false the image of the point (-8,-5) under a reflection across the y-axis is (8,-5)

Mathematics
1 answer:
kakasveta [241]4 years ago
7 0
False. A reflection over the y-axis would result in: (-8,5)
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What table represents an exponential function of the form y=b^x when 0
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Answer:

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Step-by-step explanation:

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6 0
4 years ago
Find the coordinates of the circumcenter for ∆DEF with coordinates D(1,3) E (8,3) and F(1,-5).
NemiM [27]

Let the coordinates of the circumcentre O of the triangle DEF be (x, y). Circumcentre of a triangle is equidistant from each of the vertices.

1. Distance OD=distance OE, then:

(x-1)^2+(y-3)^2=(x-8)^2+(y-3)^2.

2. Distance OD=distance OE, then:

(x-1)^2+(y-3)^2=(x-1)^2+(y+5)^2.

Solve the system:

\left\{\begin{array}{l}          (x-1)^2+(y-3)^2=(x-8)^2+(y-3)^2 \\          (x-1)^2+(y-3)^2=(x-1)^2+(y+5)^2         \end{array}\right.,

\left\{\begin{array}{l}          x^2-2x+1+y^2-6y+9=x^2-16x+64+y^2-6y+9 \\          x^2-2x+1+y^2-6y+9=x^2-2x+1+y^2+10y+25         \end{array}\right.,

\left\{\begin{array}{l}          14x=63 \\          -16y=16         \end{array}\right..

Then

x=\dfrac{63}{14} =\dfrac{9}{2} =4.5,\\  \\ y=-1.

Answer: the coordinates of the circumcenter for ∆DEF are x=4.5, y=-1.


5 0
4 years ago
What is the size of simple space
Ahat [919]

Answer:

Por defecto el interlineado es siempre sencillo, es decir: si la letra es de tamaño 12, el espacio que hay entre línea y línea también es 12. El programa adapta el espacio automáticamente en función del tamaño de letra.

Step-by-step explanation:

8 0
3 years ago
75,575 how do the values of the digit differ in the number?
Vsevolod [243]

Answer:

<u>7</u>5,575 - ten-thousands place; this 7 is worth 70,000

7<u>5</u>,575 - thousands place; this 5 is worth 5,000

75,<u>5</u>75 - hundreds place; this 5 is worth 500

75,5<u>7</u>5 - tens place; this 7 is worth 70

75,57<u>5</u> - ones place; this 5 is worth 5



8 0
4 years ago
Simplify the following expression. 3^11/5 divided by 3^-9/5
san4es73 [151]

Answer:

Answer is 81.

Step-by-step explanation:

Given two expressions are 3^{\frac{11}{5} } and 3^{-\frac{9}{5} }

Now we divide first expression by the second.

\frac{3^{\frac{11}{5} }}{3^{-\frac{9}{5} } }

3^{\frac{11}{5} }.3^{\frac{9}{5} }

3^{\frac{11}{5}+\frac{9}{5}} = 3^{\frac{20}{5} }=3^{4}=81

Therefore 81 is the answer.

6 0
3 years ago
Read 2 more answers
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