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Yuliya22 [10]
3 years ago
12

Is 3 a factor of 81? Use divisibility rules to explain

Mathematics
2 answers:
mixer [17]3 years ago
6 0
Yes it is a factor because 31 is a factor and if u add there is a one
valentinak56 [21]3 years ago
6 0

Answer:

Step-by-step explanation:

yes it is a factor because 31 is a factor and if u add there is a one

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(y+1)2_ (x + 2)2 > 1?
WINSTONCH [101]

Answer:

(–2, 6)

Step-by-step explanation:

3 0
3 years ago
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Solve<br> 7+x/3 = 2x-5<br> Give all working out
Ipatiy [6.2K]
X = 36/5
Or x = 7.2


21 + x = 6x - 15
21 = 6x - 15 - x
21 = 5x - 15
21 + 15 = 5x
36 = 5x
36/5 = x
7 0
3 years ago
Read 2 more answers
A living room will be painted with white trim. The ratio of the blue surface area between the walls is 1:10. Of 2 gallons of blu
bija089 [108]

Answer:

20 gallons

Step-by-step explanation:

The living room is made up of white trim and blue surface area between the walls. Since the ratio of the blue surface area between the walls to the white trim is given by 1 : 10.

Also 2 gallons of blue paints are used for the walls, let x represent the number of white paint used in gallons. Hence:

number of white paint in gallons = [1 / (1 + 10)] * total number of paints = 1 / 11 * total number of paints

2 = 1/11  * total number of paints used

total number of paints  = 22 gallons

number of white paint (x) = [10 / (1 + 10)] * total number of paints = 1 / 11 * total number of paints

x = 10/11 * 22

x = 20 gallons

Therefore 20 gallons of white paint was used

7 0
3 years ago
Solve for x: 1/8 = x/12 I don't need work shown just need answer<br>​
Dimas [21]

Answer:

3/2 =x

Step-by-step explanation:

1/8 = x/12

Solve using cross products

1 * 12 = 8x

12 = 8x

Divide each side by 8

12/8 =8x/8

3/2 =x

4 0
3 years ago
Corresponding points must be an equal distance from the Line of Reflection.
d1i1m1o1n [39]
It is true that corresponding points must be an equal distance from the Line of reflection. This is because in cases of reflection, the image is far behind the mirror or line of reflection as the object is in front of the mirror. What this proposition means is, the distance from the object to the line of reflection is equal to the distance between the reflection line and the image. There sizes are bound to be equal to, and hence the two corresponding points will be similar. 
7 0
3 years ago
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