All categories

3 years ago

Brainliest

Mathematics

1 answer:

Anna [14]3 years ago

8 0

Answer:

B) A dilation followed by a reflection

3 of our transformations are called isometries. These are transformations that preserve the size and shape of the original figure; they just change the position or orientation of it. Translations, reflections and rotations are all isometries. We know that isometries preserve congruence, since they maintain the size and shape of the original figure.

dilation changes the size of a figure. Since the new figure will not be the same size as the original, they will not be congruent.

<h2>Brainliest!!!!!!</h2>

You might be interested in

Is the triangle in the picture a right angle triangle? Explain how you know

Nat2105 [25]

Answer:

Step-by-step explanation:

4^2+6^2=8^2?

16+36=64?

52=64?

No.

5 0

3 years ago

Question 1 of 10

Viktor [21]

Answer:

4x+1

Step-by-step explanation:

Add f(x) and g(x):

3x-1+x+2

4x+1

8 0

3 years ago

What are two numbers multiplied together to get 15 but add to be 12?

KiRa [710]

So x times y=15
x+y=12
solve
x+y=12
subtract x from both sides
y=12-x
subsitute
xy=15
x(12-x)=15
distribute
12x-x^2=15
subtract (12x-x^2) from both sides
0=x^2-12x+15
use quadratic formula which is
x= $\frac{ -b+/- \sqrt{b^{2}-4ac} }{2a}$
where you have
0=ax^2+bx+c
so
a=1
b=-12
c=15
subsitute
x= $\frac{ -(-12)+/- \sqrt{-12^{2}-4(1)(15)} }{2(1)}$
x= $\frac{ 12+/- \sqrt{144-60} }{2}$
x= $\frac{ 12+/- \sqrt{84} }{2}$
x= $\frac{ 12+/- 2\sqrt{21} }{2}$
x=6+/- $\sqrt{21}$
x=6+ $\sqrt{21}$ or 6- $\sqrt{21}$ or aprox
x=10.5826 or 1.41742
the numbers are 10.5826 and 1.41742

3 0

4 years ago

Elizabeth has 1 7/10 as many plants as Rosalie has I her garden. If Elizabeth has 51 plants, how many plants does Rosalie have i

MrRa [10]

1 7/10 can be rewritten as 1.7

51 / 1.7 = 30 plants.

<span>Rosalie has 30 plants.

</span>

4 0

3 years ago

If SS= 162 from a sample of 15 data, find s^2

Genrish500 [490]

Answer:

11.57

Step-by-step explanation:

We have a simple formula to solve this:

$s^2=\frac{SS}{n-1}$

where

SS is sum of squares

s^2 is the variance, and

n is the number of data points

We are given all the info to find out s^2. Hence,

$s^2=\frac{SS}{n-1}\\s^2=\frac{162}{15-1}\\s^2=\frac{162}{14}=11.57$

8 0

3 years ago