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kupik [55]
3 years ago
10

Can i get help with this? lol. will mark brainlest.

Mathematics
1 answer:
cricket20 [7]3 years ago
6 0
18) 76/4=x

19) 31-x=8

20) 48+23=x

21) 1x*1=5
1x/1=5

22) An expression is a number/variable whereas an equation is made up of multiple expressions
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Is the square root of 25 rational? yes or no and please explain why.
N76 [4]

Answer: Rational "yes"

Step-by-step explanation: The square root of 25 is indeed a rational number. Rational numbers are numbers. The square root of 25 is a perfect square which means that it has a number that can be multiplied by itself which gives us 25.

In this case, the number is 5 so yes, it's rational.

5 0
4 years ago
HURRY PLEASE!!!!! Triangle RST is translated 2 units left and then reflected over the y-axis.
AVprozaik [17]

Answer:

The correct options are 1 and 2.

Step-by-step explanation:

The vertices of triangle are S(-4,4), T(-1,4), R(-1,1).

If triangle translated 2 units left,

(x,y)\rightarrow (x-2,y)

and then reflected over the y-axis,

(x-2,y)\rightarrow (-x+2,y)

The relation between image and preimage is

(x,y)\rightarrow (-x+2,y)                          ..... (1)

The vertices of image are

S(-4,4)\rightarrow S'(6,4)

T(-1,4)\rightarrow T'(3,4)

R(-1,1)\rightarrow R'(3,1)

Therefore the vertices of image are S'(6,4),T'(3,4), R'(3,1).

1. A reflection over the y-axis and then a translation 2 units right is defined as

(x,y)\rightarrow (-x+2,y)

It is equivalent to relation 1, therefore option 1 is correct.

2. A 180 rotation about the origin, then a translation 2 units right, and then a reflection over the x-axis is defined as

(x,y)\rightarrow (-x+2,y)

It is equivalent to relation 1, therefore option 2 is correct.

3. A reflection over the y-axis and then a translation 2 units left is defined as

(x,y)\rightarrow (-x-2,y)

It is not equivalent to relation 1, therefore option 3 is incorrect.

4. A 180 rotation about the origin, then a translation 2 units left, and then a reflection over the x-axis is defined as

(x,y)\rightarrow (-x-2,y)

It is not equivalent to relation 1, therefore option 4 is incorrect.

5. A reflection over the x-axis and then a translation 2 units right is defined as

(x,y)\rightarrow (x+2,-y)

It is not equivalent to relation 1, therefore option 5 is incorrect.

6. A reflection over the x-axis and then a translation 2 units left is defined as

(x,y)\rightarrow (x+2,-y)

It is not equivalent to relation 1, therefore option 6 is incorrect.

Therefore the correct options are 1 and 2.

8 0
3 years ago
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If you got 5 dogs and 7 cats but one got eaten from both of them. How much do you have left.
Talja [164]
4 & 6 cause one of both of them got eaten
4 0
3 years ago
6 7 8 only 8th grade math
saul85 [17]

☺ I might have misunderstood, but I can help if you give me the question. ☺

     

8 0
3 years ago
Evaluate 23x-1 for x = 1.<br> 1<br> 4<br> 7<br> 8
denis23 [38]
If x is 1, then 23x is 23, so we have 23-1=22 as the answer.
7 0
4 years ago
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