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scoundrel [369]
3 years ago
15

What are the coordinates of the image of point R(3,-4) after a reflection over the line x=5?

Mathematics
2 answers:
Romashka-Z-Leto [24]3 years ago
4 0

Answer:

R' is ( 7 , -4 )

Step-by-step explanation:

( 3 , -4 ) reflected over x = 5

Since the line x = 5 is vertical we'll need to add to the x coordinate of point R.

( 3 , -4 ) is 2 units away from x = 5 so we'll need to add 2 units to 5 and we get

( 7 , -4 ) is R'

vekshin13 years ago
3 0

Answer:

(7,-4)

if x=5 then imagine a new vertical line on 5

(3,-4) is two spaces left of 5, so to reflect if you would move it two spaces to the right of 5

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-4x+3x=2 how do I solve for x?​
Snezhnost [94]

Answer: Combine like terms!

Step-by-step explanation:

-4x + 3x = 2

-1x = 2

-1x/-1 = 2/-1

x = -2

7 0
3 years ago
7. What is the cardinality of each of the following sets?
zysi [14]

Answer:  

The cardinality of set (a) is 0,

the cardinality of set (b) is 1

and

the cardinality of set (c) is 3.

Step-by-step explanation:  We are given to find the cardinality of each of the following sets :

(a) { }.

(b) { { } }.

(c) {a, {a}, {a, {a}} }.

We know that

CARDINALITY of a set is the number of elements present in the set.

(a) The given set is A = { }.

The set A is an empty set, so it does not contain any element. Hence, the cardinality of the set A is 0.

(b) The given set is B = { { } }.

The set is B is singleton set, contains only one element (that is empty set). So, the cardinality of the set B is 1.

(c) The given set is C = {a, {a}, {a, {a}} }.

The set C has three elements, a, the set {a} and the set {a, {a}}. So,  the the cardinality of set C is 3.

Thus,

the cardinality of set (a) is 0,

the cardinality of set (b) is 1

and

the cardinality of set (c) is 3.

8 0
3 years ago
There are 4 times as many used cars in the car dealership lot as there as new cars. There are 120 cars total in the dealership l
jarptica [38.1K]

Answer:

120÷5=24 / 24×4=96 / 96+24=120

Step-by-step explanation:

3 0
3 years ago
A medication is available in 1000mcg per mL.<br><br> How much is needed for a 0.8mg dose?
Setler [38]

Answer:

5 doses of medication and 1000ml

8 0
2 years ago
Dale bought a map of his city it uses a scale of 1 inch = 8 miles Dale house and school are 1 1/2 inches apart on the map how fa
shtirl [24]
Alright, if the original scale was 1 inch = 8 miles, and Dale's house to his school are 1 1/2 inches apart, let's find the amount of miles.

Here's a fast way. 1 inch is 8 miles, and half of 8 equals 4 miles, which is 1/2 of an inch., 8 + 4 = 12 miles. 

So if his house and the school were 12 miles apart, and we we're using the 1 inch. = 6 miles scale, then it'd be 2 inches on the map. 

How?

If 1 inch. = 6 miles
x inches = 12 miles

12/6 = 2 

2 inches = x
4 0
3 years ago
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