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Elanso [62]
2 years ago
14

I need help on this question plz

Mathematics
1 answer:
antoniya [11.8K]2 years ago
3 0
Rotation of 180° clockwise change the coordinates from (x,y) to (-x,-y).
If the image point has the coordinates (3,-5).
It means (-x,-y) = (3,-5)
- x = 3  \: \: and  \: \:  - y =  - 5 \\ x =  - 3 \: \:  and  \: \: y = 5
So pre-image point was (x,y) = (-3,5)

Hence, option C i.e. (-3,5) is the final answer.

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Follow the steps below to find the mean for the set of data. Use the work shown to help you. Data set: 6, 5, 8, 5, 9, 6, 7, 5, 1
lbvjy [14]

Answer:

7

Step-by-step explanation: 6 + 5 + 8 + 5 + 9 + 6 + 7 + 5 + 12 = 63 so now u just divide that by 9  

6 0
3 years ago
Read 2 more answers
mr. cuddy draws a triangle with a perimeter of 36cm. Principal Aranda says that the longest side measures 18 cm, How do you know
hichkok12 [17]

Answer:

See the procedure

Step-by-step explanation:

we know that

<u>The Triangle Inequality Theorem</u>, states that the sum of the lengths of any two sides of a triangle is greater than the length of the third side

Let

a,b,c the lengths side of triangle

c is the greater side

The perimeter is equal to

P=a+b+c

P=36 cm

If c=18 cm

then

a+b=18

Applying the Triangle Inequality Theorem

a+b > c

18 > 18  ----> is not true

therefore

Principal Aranda is incorrect

The larger side cannot measure 18 cm

The largest side must be less than 18 cm

3 0
3 years ago
Find the solution to each equation:
solniwko [45]
28 hope this helps if it does thank me later
6 0
3 years ago
Sean’s age and Helen’s age are in the ratio of 3:5. Two years ago, Helen was twice as old as Sean was then. Find their present a
PolarNik [594]
Lets Sean's age be x
Helen's age by y
x/y=3/5
x=3/5y

Second equation
2(x-2)=y-2

on solving u get Helen as 10 and Sean as 6
3 0
3 years ago
Which of the following is true given that 2.1 &lt; 2.8?
sattari [20]

Answer:

\large \boxed{\mathrm{2.1 \ is \ to \ the \ left \ of \ 2.8 \ on \ a \ horizontal \ number \ line}}

Step-by-step explanation:

2.1

\sf 2.1 \  is \ lesser \ than \ 2.8.

\sf A \ number \ that \ is \ lesser \ than \ another \ number \ is \ to \ the \ left \\ \ of \ that \ number \ on \ a \ horizontal \ number \ line.

5 0
3 years ago
Read 2 more answers
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