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nirvana33 [79]
3 years ago
15

-5y + 6x = 40 3y - 8x = -46

Mathematics
1 answer:
madam [21]3 years ago
6 0

Answer:

-2y-2x=-6

Step-by-step explanation:

-5y = 3y = -2y

6x - 8x = -2y

40 - 46 = -6

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Yin wants to create figure Y′ that is similar to figure Y. Yin begins by reflecting figure Y across the y-axis.
Sholpan [36]

Answer: B) Dilate by scale factor of 2

====================================================

Explanation:

Your teacher isn't saying this directly, but I'm assuming s/he wants you to find a similar figure that isn't congruent to the original. Informally, your teacher seems to want you to find a figure that is the same shape but not the same size as the original.

If so, then any dilation will shrink or enlarge the image depending on the scale factor. So the new image will not be the same as the old one. In this case, a dilation with scale factor 2 means the new figure is twice as large (each side is twice as long). But the old image is similar to the new image. The angles keep their values and therefore we get the same shape. This is why choice B is the answer. Again this is assuming what I mentioned in the first paragraph.

Choices A, C, and D are all known as rigid transformations and they preserve the same size of the figure. Applying any of those operations will lead to the same figure (just rotated, reflected or shifted somehow). In other words, applying operations A,C, or D will have us get two congruent triangles. If two triangles are congruent, then they are automatically similar, but not vice versa. This is why we can rule out A,C, and D.

3 0
3 years ago
Read 2 more answers
What does it mean to solve an equation?
Ivanshal [37]
To add, subtract, multiply or divide the number given to get a whole number or an integer
4 0
3 years ago
The carnival committee has purchased 985 small prizes. The prizes are to be divided equally among the 29 game booths
Vladimir [108]

Answer:

1 The first digit of the quotient is 3

2. 34 prizes per booth

3.  19 prizes left over

Step-by-step explanation:

We need to divide 985 by 29


29 goes into 98   3 times

29*3 = 87  with 13 left over

135 divided by 29

29*4 =116  135-116 =19

985÷29 = 34  with 19 left over

7 0
3 years ago
What is the scale factor from Figure 2 to Figure 1?
Luda [366]

Answer:

3

Step-by-step explanation:

Each of the lines lengths multiply by 3.

6 0
3 years ago
A tank has the shape of an inverted circular cone (point at the bottom) with height 10 feet and radius 4 feet. The tank is full
german

Answer:

Step-by-step explanation:

Given that tank has the shape of inverted circular cone

Height = 10 feet and radius =  4 feet

After water pumped out height = 5 ft

Hence volume of water pumped out = \frac{1}{3} \pi R^2 h-\frac{1}{3} \pi r^2 h'

Here we have r/h is constant always

Hence \frac{r}{h'} =\frac{R}{h} \\r=Rh'/h = 4(5)/10 = 2

Substitute to get volume of water pumped out = \frac{1}{3} \pi (10*16-4*5)=\frac{140\pi}{3}

Mass of water = density x volume = 62.4(\frac{140\pi}{3})\\= 2912\pi lbs

Work done = force x displacement

= mass x accen x displacement

Here acceleration = gravity = 32.2 ft/sec^2

Displaement = height reduced = 5 ft

W=2912(32.2)(5)\pi =468832\pi foot -pound

6 0
3 years ago
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