(8r+3s)(8r-3s) dont have working but noticed that it is the difference of two squares
Answer:
80000
Step-by-step explanation:
Significant figures are any number but zeroes.
However, in some cases, zeroes also count as significant figures.
- Zeroes are significant figures when between other non-zero numbers.
- Zeroes are significant when you see a dot on the right indicating that zero is not a place holder.
- They are <u>not</u> significant when serving as place holders, such as zeroes on the right side of a number. For example, .004 has 1 sig fig. The 2 zeroes on the left aren't sig figs because they're just place holders.
- Zeroes on the <u>right</u> side of a decimal are also significant.
Answer:
x=3cm
Step-by-step explanation:
We have three figures.A triangle(8 by X+3).In it we have another triangle(4 by x)and a trapesium
thus that means the area of the trapesium+area of small triangle=area of big triangle.
1)Area=1/2lengthxwidth. =1/2×8×(x+3)
=4(x+3)
=4x+12cm³
2)Area=1/2lengthxwidth. =1/2×4×x
=2x
3)area=1/2(a+b)h
=1/2(x+3+x)×4
=1/2×4(2x+3). (area of trapesium)
=2(2x+3)
=4x+6cm³
thus:
2x+4x+6=4x+12 put like terms together
2x+4x-4x=12-6
2x=6 divide both sides by 2
x=3cm
<span>f(x) = x2 + 4 g(x) = x2 − x + 5
</span>f(x) · g(x) = (fg)(x) = (x^2 + 4)(<span> x^2 − x + 5)
</span>f(x) · g(x) = (fg)(x) = x^4 - x^3 + 5x^2 + 4x^2 - 4x + 20
f(x) · g(x) = (fg)(x) = x^4 - x^3 + 9x^2 - 4x + 20
answer
f(x) · g(x) = (fg)(x) =
x^4 - x^3 + 9x^2 - 4x + 20
