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Blizzard [7]
2 years ago
15

Help which one is propotional? ​

Mathematics
1 answer:
SOVA2 [1]2 years ago
5 0

Answer: C

Step-by-step explanation: Because that table is showing (x - y)

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Can someone help me with number 8 plz
statuscvo [17]
We have the following equation:
 h (t) = - 16t ^ 2 + 161t + 128
 We substitute the value of h (t) = 170:
 170 = -16t ^ 2 + 161t + 128
 We rewrite the equation:
 -16t ^ 2 + 161t + 128 - 170 = 0
 -16t ^ 2 + 161t - 42 = 0
 We look for the roots of the equation:
 t1 = (161/32) + root (23233) / 32
 t2 = (161/32) - root (23233) / 32
 Answer:
 
The object is 170 feet off the ground at the following times:
 
t1 = (161/32) + root (23233) / 32
 
t2 = (161/32) - root (23233) / 32
7 0
3 years ago
Verne has two pieces of lumber the redwood board is 3/4 inch thick. The pine board is only 1/5 inch thick. How much thicker is t
Mice21 [21]

Answer:

SteThe redwood is 3.75 times thicker

p-by-step explanation:

7 0
2 years ago
Lauren jogs the rate at a 2 mile every 1/2 hour. what is her until rate?
Fantom [35]

I 4 mph

Step-by-step explanation: I assume you’re writing Asking about the mph it would be be 4

5 0
2 years ago
Find an explicit formula for the arithmetic sequence below.<br> 9, 39/4, 21/2, 45/4, 12, 51/4,...
RideAnS [48]
F(n) = 9 + 0.75(n-1)
8 0
2 years ago
After being rearranged and simplified, which of the following equations could be solved using the quadratic formula?
Alecsey [184]

For this case we must indicate which of the equations shown can be solved using the quadratic formula.

By definition, the quadratic formula is applied to equations of the second degree, of the form:

ax ^ 2+ bx+ c = 0

Option A:

2x ^ 2-3x +10 = 2x + 21

Rewriting we have:

2x ^ 2-3x-2x+ 10-21 = 0\\2x ^ 2-5x-11 = 0

This equation can be solved using the quadratic formula

Option B:

2x ^ 2-6x-7 = 2x ^ 2

Rewriting we have:

2x ^ 2-2x ^ 2-6x-7 = 0\\-6x-7 = 0

It can not be solved with the quadratic formula.

Option C:

5x ^ 2 + 2x-4 = 2x ^ 2

Rewriting we have:

5x ^ 2-2x ^ 2 + 2x-4 = 0\\3x ^ 2 + 2x-4 = 0

This equation can be solved using the quadratic formula

Option D:

5x ^ 3-3x + 10 = 2x ^ 2

Rewriting we have:

5x ^ 3-2x ^ 2-3x + 10 = 0

It can not be solved with the quadratic formula.

Answer:

A and C

4 0
3 years ago
Read 2 more answers
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