Todd is 3 years older than his brother Jack. If Jack is x years old and Todd is y years

Mathematics

2 answers:

True [87]3 years ago

8 0

Answer:

Todd is 31years old.

Step-by-step explanation:

$x = 28 \\ y = \\ 28 + 3 = 31$

o-na [289]3 years ago

4 0

The answer to this would be 25.

Explanation:If Todd is three years older than jack you will have to subtract the three from that 28 to get your answer.

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Solve x+2=1/2x-1 Please hurry!

vfiekz [6]

Answer:

Step-by-step explanation:

$2 + 1 = \frac{1}{2}x - x$

$3 = - \frac{1}{2}x$

$x = \frac{ - 3}{ \frac{1}{2} } \\ x = \frac{ - 6}{1} \\ x = - 6$

Hope this helps :)

8 0

3 years ago

An irrigation system (sprinkler) has a parabolic pattern. The height, in feet, of the spray of water is given by the equation h(

jasenka [17]

9514 1404 393

Answer:

7.5 ft
32.5 ft, 5 ft
10.7 ft

Step-by-step explanation:

a) The starting height is h(0) = 7.5 feet, the constant in the quadratic function.

The irrigation system is positioned 7.5 feet above the ground

b) The axis of symmetry for quadratic ax^2 +bx +c is x = -b/(2a). For this quadratic, that is x=-10/(2(-1)) = 5. This is the horizontal distance to the point of maximum height. The maximum height is ...

h(5) = (-5 +10)(5) +7.5 = 32.5 . . . feet

The spray reaches a maximum height of 32.5 feet at a horizontal distance of 5 feet from the sprinkler head.

c) The maximum distance will be √32.5 + 5 ≈ 10.7 ft.

The spray reaches the ground at about 10.7 feet away.