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Sergeu [11.5K]
3 years ago
14

Given the piecewise function shown below, select all of the statements that are true.

Mathematics
1 answer:
mafiozo [28]3 years ago
8 0
A.  f(1)=5   (as defined on the second line, x=1)   TRUE  because f(1)=5
B.  f(5)=5^2=25 (as defined on third line, x>1)   FALSE   because f(5) ≠ 1
C. f(-2)=2(-2)=-4  (as defined on first line, x<1)  FALSE   because f(-2) &ne; 4
D. f(2)=2^2=4  (as defined on third line, x>1)   TRUE   because f(2)=4
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Very Confused please help!
Nataly_w [17]
We know that<span>
<span>Figures can be proven similar if one, or more, similarity transformations (reflections, translations, rotations, dilations) can be found that map one figure onto another. 
In this problem to prove circle 1 and circle 2 are similar, a translation and a scale factor (from a dilation) will be found to map one circle onto another.

we have that</span>
<span> Circle 1 is centered at (5,8) and has a radius of 8 centimeters
 Circle 2 is centered at (1,-2) and has a radius of 4 centimeters
</span>
step 1
<span>Move the center of the circle 1 onto the center of the circle 2
the transformation has the following rule</span>
(x,y)--------> (x-4,y-10)
so
(5,8)------> (5-4,8-10)-----> (1,-2)
so
center circle 1 is now equal to center circle 2 
<span>The circles are now concentric (they have the same center)
</span>
step 2
<span>A dilation is needed to decrease the size of circle 1 to coincide with circle 2
</span>
scale factor=radius circle 2/radius circle 1-----> 4/8----> 0.5

radius circle 1 will be=8*scale factor-----> 8*0.5-----> 4 cm
radius circle 1 is now equal to radius circle 2 

<span>A translation, followed by a dilation will map one circle onto the other, thus proving that the circles are similar

the answer is
</span>
</span>The circles are similar because you can translate Circle 1 using the transformation rule (x-4,y-10) and then dilate it using a scale factor of (0.5)
4 0
3 years ago
I don't get this problem. Lila decided to make kore baked goods for the bake sale. She used 1 / 8 lb less flour to make bread th
Anvisha [2.4K]
Start by taking the information we know, and write equations to represent the realationships:

1) "1/8 lbs less flour to make bread than to make cookies"         
     b=c-\frac{1}{8}

2) "1/4 lb more flour to make cookies than to make brownies:
     c=w+\frac{1}{4}

3) "she used 1/2 lb of flour ro make bread"
    b = \frac{1}{2}

From here you can solve for w using back substitution. 
7 0
3 years ago
PLEASE HELP WILL MARK BRAINLIEST
jekas [21]

Answer:

10

Step-by-step explanation:

√81 = 9   (9+9-4*2)

4 * 2 = 8  (9+9-8)

9 + 9 = 18 (18 - 8)

18 - 8 = 10

7 0
2 years ago
Read 2 more answers
What is the equation of the line that is parallel to the line x = –2 and passes through the point (–5, 4)
Karolina [17]

Answer:

x=-5

Step-by-step explanation:

4 0
3 years ago
How much money left after spending $8, $7 and $13, then received $10 and spent $15. now $12 is left. how much money did one have
Inessa [10]
$8 + $7 + $13 + 15 = $43
$x - $43 = $12
x = $55

i am a mathematics teacher. if anything to ask please pm me
4 0
3 years ago
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