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AURORKA [14]
2 years ago
6

I need help with this ^

Mathematics
1 answer:
Tatiana [17]2 years ago
5 0

Answer:22 1/2

Step-by-step explanation:

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The value of y varies directly with x. When y=55, x=1/4. Determine the constant of proportionality
docker41 [41]

Answer:

<u>k = 220</u>

Step-by-step explanation:

<u>Proportion of y and x</u>

  • y = kx

<u>Given</u> :

  • y = 55
  • x = 1/4

<u>Solving</u> :

  • 55 = k/4
  • k = 55 x 4
  • <u>k = 220</u>
4 0
2 years ago
Identify the vertex of the quadratic function in standard form y=2x^2 -16x+31
lapo4ka [179]

Answer:

(4,1)

Step-by-step explanation:

The vertex of the quadratic can be found using -b/2a. The vertex is the point (-b/2a, f(-b/2a)).

To find the x coordinate of the quadratic, define its a,b, and c. The quadratic has a = 2, b=-16, and c=31. Then -b/2a is -(-16)/2(2) = 16/4 = 4.

To find the y-coordinate, input the x=4 and solve for y.

y=2(4)^2-16(4)+31\\y=2(16)-64+31\\y=32-64+31\\y=1

The vertex is (4,1).

8 0
3 years ago
Which point on the number line below represents the number opposite the<br> number -51
drek231 [11]

Answer:

Step-by-step explanation:

The opposite of a number is found by taking the opposite sign of the one given.  The opposite of 3 is -3; the opposite of -2 is 2.

Therefore, the opposite of -5.5 (point P) is 5.5 (point S).

5 0
3 years ago
Greatest common divisor of 66 and 90
pav-90 [236]

Answer:

6

Step-by-step explanation:

66 / 6 =11

90/6 =15

11 & 15 prime to each other, so 6 is the answer.

8 0
3 years ago
Determine the perimeter of each figure.
Step2247 [10]
Number 1. 306mm

Number 2.6in
5 0
3 years ago
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