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____ [38]
2 years ago
6

Amare worked twice as many hours as jing they worked a total of 42 hours help how xo i do this

Mathematics
1 answer:
LenaWriter [7]2 years ago
5 0
Amare=x Jing=Y x=2y 42=x+Y (<-These are 2 base equations for systems of equations) 42=2y + Y 42=3y (Y=14) 42=x + 14 42-14=x (x=28) Amare=28 Jing=14
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3 years ago
9.01 prove that the two circles are similar
il63 [147K]

Answer:

see the procedure

Step-by-step explanation:

we know that

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 C and circle A are similar, a translation and a scale factor (from a dilation) will be found to map one circle onto another.

we have that

Circle C is centered at (0,-1) and has a radius of 2 units

Circle A is centered at (3,4) and has a radius of 5 units

step 1

Move the center of the circle C onto the center of the circle A

the transformation has the following rule

(x,y)--------> (x+3,y+5)

so

(0,-1)------> (0+3,-1+5)-----> (3,4)

center circle C is now equal to center circle A  

The circles are now concentric (they have the same center)

step 2

A dilation is needed to increase the size of circle C to coincide with circle A

scale factor=radius circle A/radius circle C-----> 5/2=2.5

radius circle C will be=2*scale factor-----> 2*2.5=5 units

radius circle C is now equal to radius circle A  

therefore

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

4 0
3 years ago
This circle is centered at the origin, and the length of its radius is 4. What is
kolezko [41]
I had the same problem
4 0
3 years ago
Six times a number is less than 72
anastassius [24]
It could be any number under 11
6 0
3 years ago
Read 2 more answers
Write 8/4 as a mixed number. how did you come to your answer
Sergeeva-Olga [200]
To write in the mixed fraction you have to simply divide 8 and 4. 
To right in the mixed number we need to know numerator, denominator and divisor. 
So in your problem our divisor is 4, 
so now lets divide it 
\frac{8}{4}
=  \frac{2}{1}

So, now we have to write it as mixed number..
mixed number  will be 
2  \frac{0}{8}

Hope this helped you.. :)
7 0
3 years ago
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