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QveST [7]
3 years ago
10

Pleaseeeeeeeeeeeeee Helppppppppppppp

Mathematics
2 answers:
Verdich [7]3 years ago
4 0

Answer:

(A) -0.2

(B) 500

(C) im way past that so i would not be able to explain well

Step-by-step explanation:

Svetlanka [38]3 years ago
4 0
(A) is -0.2
(B) is 500
(C) not sure so not able to explain
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A fisherman uses a spring scale to weigh a tilapia fish. He records the fish weight as a kilograms and notices that the spring s
belka [17]

Answer:

k = \frac{980a}{b}

Step-by-step explanation:

Fisherman noticed a stretch in the spring = 'b' centimetres

Weight of the fish = a kilograms

If force applied on a spring scale makes a stretch in the spring then Hook's law for the force applied is,

F = kΔx

Where k = spring constant

Δx = stretch in the spring

F = weight applied

F = mg

Here 'm' = mass of the fish

g = gravitational constant

F = a(9.8)

  = 9.8a

Δx = b centimetres = 0.01b meters

Therefore, 9.8a = k(0.01b)

k = \frac{9.8a}{0.01b}

k = \frac{980a}{b}

Therefore, spring constant of the spring will be determined by the expression, k = \frac{980a}{b}

4 0
3 years ago
State the intervals for which the given quadratic is positive and when it is negative.
goblinko [34]

Answer:

  • Positive at (-9, 2)
  • Negative at ( -oo, -9) or (2, + oo)

Step-by-step explanation:

<u>Given function</u>

  • y= -2x^2 - 14x + 36

<u>Getting zero's</u>

  • -2x^2 - 14x + 36 = 0
  • x^2 + 7x - 18 = 0
  • x = ( -7 ± √(49 +72))/2 = ( -7 ± 11)/2
  • x = - 9 and x = 2

<u>As the x^2 has negative coefficient, the function is positive between -9 and 2</u>

  • - 9 < x < 2 or
  • (-9, 2)

<u>And it is negative at:</u>

  • x < -9 and
  • x > 2
  • or
  • ( -oo, -9) or (2, + oo)

3 0
3 years ago
PLEASE HELP I WILL MARK YOU BRAINLIEST<br><br> FIND THE AREA OF NUMBER 3 AND 4
scoray [572]

Answer:

3. 112.2 yd

4. 30m

Step-by-step explanation:

Number 3:

  1. L × W (length × width) = A
  2. 18.7 × 6 = 112.2 yd

Number 4:

  1. B × H (base × height) = A
  2. 6 × 5 = 30 m

I hope this helps!

8 0
3 years ago
Read 2 more answers
Use intercepts to graph the line described by each equation. -6y=-4x+24
Aloiza [94]
First, you have to get the equation to the normal form of a line. To do this, you divide both sides by -6 to get \frac{2}{3} x-4. The y-intercept is at -4 and your slope is 2/3. Use this to graph the equation.
3 0
3 years ago
Can someone please help me with this
schepotkina [342]

Answer:

y=25

2 of the y's = 50 in total

Step-by-step explanation:

180-115=x

x=65

180-90-65=y

y=25

5 0
2 years ago
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