Answer:
The answer is 4.25*10^−4
Step-by-step explanation:
First convert 2.5*10^-5 into decimal form
That's
2.5*10^-5 = 0.000025
0.00045 - 0.000025 = 0.000425
= 4.25*10^−4 in scientific notation
Hope this helps
Answer:
$21
Step-by-step explanation:
multiply 1.75 times 4, which is 7
then multiply 7 times 3, which is 21
Answer:
I know
Step-by-step explanation:
<h3>
Answer: 9 inches (choice D)</h3>
Work Shown:
V = volume of pyramid
V = (1/3)*(area of base)*(height)
V = (1/3)*(12*10)*h
V = (1/3)*120h
V = 40h
Set this equal to the given pyramid volume 360 cubic inches and solve for h
40h = 360
h = 360/40
h = 9
Solution:
1. Move all terms to one side
<span>25{x}^{2}+40x+16-28=0</span>
2. Simplify <span>25{x}^{2}+40x+16-28 to <span>25<span>x<span><span>2</span><span></span></span></span>+40x</span></span><span><span>−12</span></span>
<span>25{x}^{2}+40x-12=0</span>
3. Apply the Quadratic Formula<span>x=\frac{-40+20\sqrt{7}}{50},\frac{-40-20\sqrt{7}}{50}
</span>
4. Simplify solutions
<span>x=-\frac{2(2-\sqrt{7})}{5},-\frac{2(2+\sqrt{7})}{5}</span>
Done!
