1 year ago

Half of a certain number is three more than the number

Mathematics

1 answer:

Shtirlitz [24]1 year ago

7 0

Answer:

x = -1.2

Step-by-step explanation:

Let this number be x.

x+3 = 0.5x

x-0.5x = -3

2.5x = -3

x = -1.2

You might be interested in

HELP ME PLEASE FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! DUE IN 4 MIN!!!!!!!!!!!!!!!!!!!!!!!!!!

goldfiish [28.3K]

Answer: 66

Step-by-step explanation: Basically you want to find the area of the whole shape and the white shape, which the whole shape is 96 and the white shape is 30, and subtract 96-30=66

3 0

1 year ago

Read 2 more answers

A dome of a building is in the form of a hemisphere from inside it was whitewashed at the cost of rupees 4989.60 if the cost of

Luda [366]

Answer: $249.48\ m^2; 369.168\ m^3$

Step-by-step explanation:

Given

Cost of white-washing =Rs. 4989.60

Rate =20 per meter square

So, inside area of = $\dfrac{4989.60}{20}=249.48\ m^2$

The surface area of dome= $4\pi\ r^2=249.48$

$4\times 3.142\times r^2=249.48\\r^2=\frac{249.48}{4\times 3.142}=19.85\\r=4.455\ m$

The volume of air in the dome $V=\frac{4}{3}\pi r^3$

$V=\frac{4}{3}\cdot 3.142\cdot (4.45)^3\\V=369.17\ m^3$

6 0

2 years ago

Patsy and Tyra together have $50. When Patsy gifts Tyra $12, they both have the same amount. How much did they each have in the

Radda [10]

x=x-12

x+x-12=50

2x=62

x=31

5 0

2 years ago

The question, “How many ways can 4 students be chosen from a class of 30 students?”, is a(n) _____.

Ahat [919]

The answer to your question is A

7 0

2 years ago

Read 2 more answers

(c+4)^2(4-c)^2 i need help

Furkat [3]

Answer

c^4-32c^2+256 (Simplified)

8 0

1 year ago

Half of a certain number is three more than the number​

Half of a certain number is three more than the number