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tamaranim1 [39]
3 years ago
14

70 POINTS Which properties justify the steps taken to solve the system? {3x−4y=9 2x+8y=6 Drag the answers into the boxes to matc

h each step.

Mathematics
2 answers:
Lynna [10]3 years ago
4 0
Left - right
1 - 4
2 - 1
3 - 2
4 - 3
5 - 7
6 - 5
7 - 6
stellarik [79]3 years ago
4 0

The answers below me were all right.

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Please help!
aksik [14]

Answer:

  • reflection, then translation
  • rotation, then translation

Step-by-step explanation:

When the points designating each triangle are considered in order, they are seen to be in clockwise order. Segment FG is oriented to the west, while corresponding segment VW is oriented to the east. This means the figure could have been rotated 180° or reflected across a point. Either way, some translation may be necessary to align the figures as shown.

Possible transformations include ...

  • reflection across a point, then translation (depending on the location of the point)
  • rotation 180° about a point, then translation (depending on the location of the point)

___

If one of the triangles is reflected across the midpoint of GW, it will coincide with the other triangle. Hence only one reflection across a chosen point is required. Of course, reflection across a point is identical to rotation 180° about that point. For any other point of reflection or rotation, translation will be involved.

8 0
3 years ago
Read 2 more answers
Please i need an answer urgently. Sum of 3 terms are 252, first term is 192. Find common ratio
Viefleur [7K]

Answer:

r=\frac{1}{4}\\\\r=-\frac{5}{4}

Step-by-step explanation:

<u>Geometric Sequences</u>

The geometric sequence is given as:

a_1, a_1r, a_1r^2, a_1r^3,..., a_1r^{n-1}

Where n is the number of the term, n≥1, and r is the common ratio.

The sum of n terms of the geometric sequence is given by:

\displaystyle S_n=a_1\frac{r^n-1}{r-1}

We are given: S3=252, a1=192, thus substuting:

\displaystyle 252=192\frac{r^3-1}{r-1}

Dividing by 12:

\displaystyle 21=16\frac{r^3-1}{r-1}

Recall that:

r^3-1=(r-1)(r^2+r+1)

Substituting:

\displaystyle 21=16\frac{(r-1)(r^2+r+1)}{r-1}

Simplifying:

21=16(r^2+r+1)=16r^2+16r+16

Rearranging:

16r^2+16r+16-21=0

16r^2+16r-5=0

Rewriting:

16r^2-4r+20r-5=0

Factoring:

4r(4r-1)+5(4r-1)=0

(4r-1)(4r+5)=0

Solving:

r=\frac{1}{4}\\\\r=-\frac{5}{4}

Both solutions are valid

6 0
3 years ago
Read question number 15 and Then give Me The answer please
vovangra [49]

A is right answer

Of this question

3 0
3 years ago
Round the following numbers to 1 decimal place.
Gemiola [76]

Answer:

a)65.9

b)326.6

c)13.6

d)8.0

3 0
3 years ago
Read 2 more answers
Only 8 9 and 10 please
sattari [20]
8) 3/16
9) 41/8
10) 218/5
3 0
3 years ago
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