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sveta [45]
3 years ago
7

Help please it would be very much appreciated

Mathematics
1 answer:
Scilla [17]3 years ago
3 0

Answer:

54 degrees

Step-by-step explanation:

4y-7=2y+11

2y=18

y=9

4(9)-7=25

2(9)+11=29

25+29=54

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First, the triangle is dilated by a scale factor of 1/3 about the origin. Then the triangle is reflected over the x-axis. Finall
musickatia [10]

Answer:

(\frac{1}{3}x - 3,-\frac{1}{3}y+2)

Both triangles will be similar

Step-by-step explanation:

See comment for complete question.

Given

Let the coordinates of the triangle be T(x,y)

First transformation: Dilation by 1/3

The new points will be:

T' = \frac{1}{3}(x,y)

T' = (\frac{1}{3}x,\frac{1}{3}y)

Second: Reflection over the x-axis

When a point (x,y) is reflected over the x-axis, the new point is (x,-y).

So, we have:

T'' = (\frac{1}{3}x,-\frac{1}{3}y)

Third: Translation 3 units left and 2 units up.

When a point (x,y) is translated b units left and h units up, the new point is (x - b,y+h).

In this case:

b = 3 and h = 2

So, we have:

T''' = (\frac{1}{3}x - 3,-\frac{1}{3}y+2)

Hence, the coordinate of the new triangle will be: (\frac{1}{3}x - 3,-\frac{1}{3}y+2)

<em>Additionally, both triangles will be similar because all the transformation done are rigid transformations i.e. Dilation, Reflection and Translation</em>

4 0
3 years ago
Diane has $1.85 in dimes and nickels. she has a total of 23 coins. how many of each kind does she have? how many nickles? how ma
amm1812
The two equations for the set up are:
x+y=23 where x is the number of dimes and y is the number of nickles
10x+5y=185 
Now you solve by elimination and substitution.
Multiply your first equation by -5 and add the two equations together
-5x-5y=-115
+10x+5y=185
-------------------
5x=70
x=14

Substitute that into your original equation:
14+y=23
y=9

So you have 14 dimes and 9 nickles.

Hope this helps
5 0
3 years ago
What is the value of x?<br> a . 75<br> b . 25.5<br> c . 8<br> d . 4.5<br><br> help meeee
Rashid [163]

Answer:

d. 4.5

Step-by-step explanation:

10x-5=16x+22

    -22      -22

10x-27=16x

-10x      -10x

-27=6x

x=4.5

3 0
3 years ago
Read 2 more answers
Select ALL the expressions that are equivalent to 1/2z
kicyunya [14]
The only expressions are letters B and D
3 0
4 years ago
How to solve for g 10g^2+33g=9-2g^2
11Alexandr11 [23.1K]
Given:  <span>10g^2+33g=9-2g^2

Group the q^2 terms first, then the q terms, and finally the constants:

12g^2 + 33q - 9 = 0.  Make sure you agree with this, or otherwise fix it.

Tools for solving quadratic equations include the following and more:

graphing
quadratic formula
completing the square

I've graphed this simplified quadratic on my TI-83 calculator and see that -3 seems to be a root.  Let's check it!
      ________________
-3  /   12    33    -9
                 -36    9
     ---------------------
        12      -3      0           Since the remainder is zero, -3 is a root and (x+3) is                                          a factor.  The other factors are 3 and (4x -1)


Then 3(4g-1)(g+3) = 0, with the result that g = 1/4 and g = -3.

Please check these roots by subst. into the original equation.</span>
3 0
4 years ago
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