<img src="https://tex.z-dn.net/?f=5x%3D%5Csqrt%7B10%2B15x%7D" id="TexFormula1" title="5x=\sqrt{10+15x}" alt="5x=\sqrt{10+15x}" a

Let t represent Todd's age now.
.. 4(t -3) -(t -3) = 81 . . . . . . 3 years ago, their differnce in ages was 81.
.. 3t -9 = 81
.. t = (81 +9)/3 = 30

Todd is 30 now.

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You can also work this by considering "ratio units." 3 years ago, the ratio of their ages was 4:1, a difference of 3. That difference corresponds to 81 years, so each "ratio unit" represents 81/3 = 27 years. Todd's age then was 1 ratio unit, 27 years. Now, Todd's age is 30.

8 0

3 years ago

Find the value of X.

olganol [36]

Because the ratio of a 45,45,90 triangle is 1:1: square root 2, x=4.

4 0

3 years ago

Identify the zeros of f(x)=(x-3)(x+9)(4x-3)

Arlecino [84]

Answer:

X=3

X=-9

x=3/4

Step-by-step explanation:

3 0

2 years ago

What is the equation of the line that passes through the point (2, 1) and has a slope of 3/2?

Ilia_Sergeevich [38]

Given :-

A line having a slope of 3/2 passes through (2,1) .

To Find :-

The equation of the line .

Answer :-

According to the question ,

m = 3/2
Point = (2,1)

We know Point slope form of the line as ,

y - y¡ = m ( x - x ¡ )

Substitute ,

y - 1 = 3/2 ( x - 2 )
y - 1 = 3/2x - 3/2*2
y - 1 = 3/2x - 3
2( y -1) = 3/2x *2 - 3*2
2y - 2 = 3x - 6
3x - 2y -4 = 0

Hence the equation of the line is 3x -2y-4=0 .

5 0

2 years ago

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