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Alexxx [7]
3 years ago
12

Which equation can be used to find the number of deer in the forest on January 1? A zoologist is recording the loss of deer in a

forest. She notes the number of deer, d, in the forest on January 1. One year later, there were 73 deer in the forest, which is 19 fewer deer than were in the forest a year earlier. What is the number of deer in the forest on January 1?
A. 73−d=19
B. 73+d=19
C. d−19=73
D.  d−73=−19
Mathematics
2 answers:
vagabundo [1.1K]3 years ago
7 0

Answer:

it would be c

Step-by-step explanation:


Vanyuwa [196]3 years ago
3 0
The equation would be d - 19 = 73. So the zoologist would take the number of deer recorded and subtract it from 19 (since it said 19 fewer deer) and the answer would be 73 (because that is how many deer were recorded a year later. I hope this helps!
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Answer:

x intercepts  -sqrt(5), + sqrt(5)

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Step-by-step explanation:

y = x^2 -5

to find the x intercept set y=0 and solve for x

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+- sqrt(5) = sqrt(x^2)

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Step-by-step explanation:

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Suppose an=3an-1 -5an-2 -4an-3. and a4= -7, a5=-36, a6=-85 , find a1 , a2, a3​
maria [59]

Answer:

        a_1=4\\\\a_2=0\\\\a_3=3

Explanation:

The equation is:

      a_n=3a_{n-1}-5a_{n-2}-4a_{n-3}

and

      a_4=-7, a_5=-36, a_6=-85

<u>1. Subsittute n = 6 into the equation:</u>

      a_6=3a_{5}-5a_{4}-4a_{3}

      Now subsititute the known values:

       -85=3(-36)-5(-7)-4a_{3}

      You can solve for a_3

      -85=-108+35-4a_{3}\\\\4a_3=12\\\\a_3=12/4\\\\a_3=3

<u />

<u>2. Substitute n = 5 into the equation:</u>

    a_5=3a_{4}-5a_{3}-4a_{2}

     Substitute the known values and solve for a_2

        -36=3(-7)-5(3)-4a_{2}\\\\4a_2=-21-15+36=0\\\\a_2=0

<u>3. Substitute n = 4 into the equation, subsitute the known values and solve for </u>a_1<u />

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        -7=3(3)-5(0)-4a_{1}\\\\4a_1=9+7=16\\\\a_1=4

7 0
3 years ago
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