Answer:
see below
Step-by-step explanation:
4.2 x 10^6 − 1.2 x 10^5 − 2.5 x 10^5
All exponent have to have the same number
42 x 10^5 − 1.2 x 10^5 − 2.5 x 10^5
Subtract the number
42 - 1.2 - 2.5 = 38.3
Add back the exponent
38.3 * 10 ^5
This is not in scientific notation
Move the decimal one place to the left and add one to the exponent
3.83 * 10^6
3.3 x 10^9 + 2.6 x 10^9 + 7.7 x 10^8
All exponent have to have the same number
3.3 x 10^9 + 2.6 x 10^9 + .77 x 10^9
Add the numbers
3.3+2.6+.77 =6.67
Add back the exponent
6.67*10^9
This is in scientific notation
8.0 x 10^4 − 3.4 x 10^4 − 1.2 x 10^3
All exponent have to have the same number
8.0 x 10^4 − 3.4 x 10^4 − .12 x 10^4
Subtract
8.0 - 3.4 - .12 = 4.48
Add back the exponent
4.48* 10^4
This is in scientific notation
Answer:
-$150
Step-by-step explanation:
Given:
(I - E) / 12
Where,
I = total income
E = total expenses
I = $52,000
E = $53,800
(I - E) / 12
= (52,000 - 53,800) / 12
= -1,800 / 12
= -150
-$150 shows that Mr. Engle's total expenses exceeds his total income per month with an average of $150
Answer is 33 units... Hopes it helps
Distribute
remember a(b+c)=ab+ac
we can actually divide both sides by x
5(4x+8)=4(6x-10)
distribute
20x+40=24x-40
minus 20x both sides
40=4x-40
add 40 both sides
80=4x
divide by 4
20=x
Answer:
1 rectangle
Step-by-step explanation
Area= lxb
So 7.7 x 11 = 84.7
3 trapezoid
Area =(a+b/2)
Base a=13
Base b = 6
Height = 5
By 2
Answer= 47.5
4 Right angled triangle
Ab/2
Axb
Multiply each legs of the right angle triangle
So 3 1by4 x 4
By 2
