18. Ingrid usually runs 12 miles in 2 hours. If she

Mathematics

1 answer:

spayn [35]2 years ago

6 0

Answer:

4 miles

Step-by-step explanation:

120min/12miles

10min/1mile

40min/4miles

You might be interested in

X^3+3x^2y+3xy^2+y^3 ———————————— X^3+y^3

Hoochie [10]

To factor this fraction, you have be be aware of two special factoring formula:
a^3 + b^3 = (a + b)(a^2 – ab + b^2)

(a+b)³ = a³ + 3a²b + 3ab² + b³

You can see the top part in this case is (x+y)^3, and the bottom (denominator) can be factor into (x+y)(x^2-xy+y^2)
we can cancel (x+y), so what we have left is (x+y)^2/(x^2-xy+y^2)
or (x^2+2xy+y^2)/(x^2-xy+y^2)

7 0

2 years ago

PLeAsE sEnD hElP !!!!!!!!!!!!!!!!

Luba_88 [7]

Answer:

5 units

Step-by-step explanation:

If DG, EG and FG are perpendicular bisectors of the sides of triangle ABC, then point G is the circumcenter of the triangle ABC and

BG = AG = CG as radii of the circumcirle.

Consider right triangle BEG. By the Pythagorean theorem,

$BG^2=EG^2+BE^2\\ \\BG^2=4^2+3^2\\ \\BG^2 =16+9\\ \\BG^2=25\\ \\BG=5\ units$