3 years ago

What is the value of -3 + 4.5 - (- 1.2)

Mathematics

1 answer:

kari74 [83]3 years ago

7 0

The answer to your question is 13.5

You might be interested in

A sample of n = 5 scores has a mean of m = 8. one new score is added to the sample and the new mean is calculated to be m = 9. w

Yuri [45]

If the 5 scores have a mean of 8, then their total sum would be 8*5 = 40

Now if one score if added (let's call this score x), there are 6 scores and the mean changes to 9, thus:
(40 + x)/6 = 9
40 + x = 54
x = 14

6 0

3 years ago

Read 2 more answers

Giving 20 points to the right person if your wrong your getting reported

Paha777 [63]

Answer:

730

Step-by-step explanation:

A(X)= 2πRH+2πR^2

A(X)=2π(7.5)(8)+2π(7.5)^2=730.42 = 730

8 0

3 years ago

Help what is the temperature

mote1985 [20]

The answer is 25 degrees Celsius

7 0

3 years ago

PLZZZZ HELPPPP THIS IS A TIMED TESTTT!!

lorasvet [3.4K]

Answer:

2/3

Step-by-step explanation:

DEFG ~ D'E'F'G'

$\frac{D'G'}{DG}$ = $\frac{2}{3}$

8 0

3 years ago

the perimeter of a triangle is 38 ft . One side is 14 ft long . Another side is 9 ft long . How long is the third side ?

Aleks [24]

38 - (14+9) = 15ft long

4 0

3 years ago