Answer:
There are 9 000 000 = 9 million reptiles in the US.
Step-by-step explanation:
Percentages and ratio:
The double of a measure, for example, is 200% of the measure.
So 1000% of a measure is 10 times the measure.
There are 90 million pet dogs in the US. The number of dogs is 1000% the number of reptiles.
The number of pet dogs is 10 times the number of reptiles, which means that:
There are 9 000 000 = 9 million reptiles in the US.
4
-∛64 means that x³= 64
4 x 4 x 4= 64
Answer:
Slope intercept form; -4y = -3x + 9
Y-intercept; 9
Answer:
Nonlinear
Step-by-step explanation:
Distribute the x
y=2x-x^2
It's quadratic
X^2 + y^2 - 16y + 39 = 0
<span>-x^2 + y^2 - 9 = 0 </span>
<span>----------------------------------- </span>
<span>2y^2 - 16y + 30 = 0 iff </span>
<span>y^2 - 8y + 15 = 0 iff </span>
<span>(y - 3)(y - 5) = 0 iff </span>
<span>y = 3 or y = 5. </span>
<span>Now plug in y value into any of the given equations (the second one is easier) to find respective x values. </span>
<span>y^2 - x^2 - 9 = 0 </span>
<span>(3)^2 - x^2 - 9 = 0 iff </span>
<span>9 - x^2 - 9 = 0 iff </span>
<span>x^2 = 0 iff </span>
<span>x = 0 </span>
<span>(0, 3) </span>
<span>y^2 - x^2 - 9 = 0 </span>
<span>(5)^2 - x^2 - 9 = 0 iff </span>
<span>25 - x^2 - 9 = 0 iff </span>
<span>16 - x^2 = 0 iff </span>
<span>(4 - x)(4 + x) = 0 iff </span>
<span>x = 4 or x = -4 </span>
<span>(4, 5), (-4, 5) </span>
<span>We have three points of intersection, which are (0, 3), (4, 5), and (-4, 5).</span>
