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rosijanka [135]
3 years ago
8

A mirror with a parabolic cross section is used to collect sunlight on a pipe located at the focus of the mirror. The pipe is lo

cated 2 inches from the vertex of the mirror. Write an equation of the parabola that models the cross section of the mirror. Assume that the parabola opens upward.
Mathematics
1 answer:
prisoha [69]3 years ago
6 0

The answer is y= 1/8x^2, if you are using Connexus the answer is C.

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Anna would like to purchase a new bike that costs $205. She already has $31 saved. If she saves a maximum of $12 a week, the fol
Dmitrij [34]

Answer:

It will take at least 15 weeks

Step-by-step explanation:

12w+31 ≥ 205

Subtract 31 from each side

12w+31-31 ≥ 205-31

12w ≥ 174

Divide each side by 12

12w/12 ≥ 174/12

w ≥ 14.5

Rounding up to the nearest integer

w ≥ 15

It will take at least 15 weeks

5 0
3 years ago
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The sum of m and 188 is 232 <br><br>write the sentence as an equation ​
makvit [3.9K]

Answer:

m + 188 = 232

Step-by-step explanation:

sum → +

m + 188 = 232

5 0
3 years ago
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Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $23 monthly fee
algol [13]

Answer:

460 minutes, or 7 hours and 20 minutes.

Step-by-step explanation:

Your formula is 0.14x+23=0.19x

X represents your minutes.

0.14*460+23=87.4

0.19*460=87.4

6 0
3 years ago
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How do I solve 3= log8+3log x?
taurus [48]

<span>3 = log(8) + log(x³) </span>

<span>When adding logs, you are multiplying the terms altogether. </span>

<span>3 = log(8x³) </span>

<span>Then, by log_a b = n ==> aⁿ = b: </span>

<span>10³ = 8x³ [Since the base is not given, I assume that the base is 10] </span>
<span>1000 = 8x³ </span>

<span>Finally, solve for x. </span>

<span>1000/8 = x³ </span>
<span>x³ = 125 </span>
<span>x = (125)^(1/3) . . .Set both sides to the power of 1/3. </span>
<span>x = 5 </span>

<span>Hence, x = 5. </span>
3 0
3 years ago
F(x) = -x² + 7x - 12<br> One factor of this is (x - 4). Find the other factor.
saveliy_v [14]

Answer:

(3-x) is the other factor.

Step-by-step explanation:

The given function is :

F(x)=-x^{2}+7x-12

One of the factor is (x-4)

We need to find the other factor.

It can be solved as follows :

F(x)=-x^{2}+4x+3x-12\\\\=(-x+3)(x-4)

So, the other factor is (3-x).

4 0
3 years ago
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