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DedPeter [7]
4 years ago
15

Write a proportion then solve. Jose is measuring plants in a field for a science project. of the first 20 plants he measures, 12

of them are smaller than a foot in height. if there are 215 plants in the field, predict the number of plants smaller than a foot.
Mathematics
1 answer:
VikaD [51]4 years ago
4 0

Answer:

129 plants are smaller than a foot

Step-by-step explanation:

12:20 are smaller than a foot

(215/20)(12) = 129

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A right-angled triangle has shorter side lengths exactly c^2-b^2 and 2bc units respectively, where b and c are positive real num
yKpoI14uk [10]

Answer: hypotenuse = c^{2} + b^{2}

Step-by-step explanation: Pythagorean theorem states that square of hypotenuse (h) equals the sum of squares of each side (s_{1},s_{2}) of the right triangle, .i.e.:

h^{2} = s_{1}^{2} + s_{2}^{2}

In this question:

s_{1} = c^{2}-b^{2}

s_{2} = 2bc

Substituing and taking square root to find hypotenuse:

h=\sqrt{(c^{2}-b^{2})^{2}+(2bc)^{2}}

Calculating:

h=\sqrt{c^{4}+b^{4}-2b^{2}c^{2}+(4b^{2}c^{2})}

h=\sqrt{c^{4}+b^{4}+2b^{2}c^{2}}

c^{4}+b^{4}+2b^{2}c^{2} = (c^{2}+b^{2})^{2}, then:

h=\sqrt{(c^{2}+b^{2})^{2}}

h=(c^{2}+b^{2})

Hypotenuse for the right-angled triangle is h=(c^{2}+b^{2}) units

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Answer:

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Step-by-step explanation:

Hope that helps

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Ralph bought 6 cds at the cost of $17.75 each how much did the cds cost altogether
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I think its $106.5 just add 17.75 6 times


7 0
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Step-by-step explanation:

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