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Afina-wow [57]
3 years ago
7

A coastline recedes at a rate of 3cm per year. How much of the coastline dissappears after 4 years?

Mathematics
1 answer:
Damm [24]3 years ago
3 0

Answer:

12 cm of coastline

Step-by-step explanation:

Multiply the years (factor) by the receding amount, 3cm, (constant) BAM answer.

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Consider the function f(x) = x2 + 2x – 35. If one of the zeros of the
Whitepunk [10]

If one zeros is x= -7 then the other zero is x=5

Step-by-step explanation:

We are given the function: f(x) = x^2 + 2x-35

If one zeros of the function is x=-7 we need to find other zero of the function.

We can find zeros of the quadratic equation by factorizing the equation

f(x) = x^2 + 2x-35

Factorizing the quadratic equation:

x^2 + 2x-35=0\\x^2-5x+7x-35=0\\x(x-5)+7(x-5)=0\\(x+7)(x-5)=0\\x+7=0\,\,and\,\,x-5=0\\x=-7\,\,and\,\,x=5

So, if one zeros is x= -7 then the other zero is x=5

Keywords: Solving Quadratic Equation

Learn more about Solving Quadratic Equation at:

  • brainly.com/question/10771256
  • brainly.com/question/2568692
  • brainly.com/question/1332667

#learnwithBrainly

8 0
3 years ago
The Japanese 5 yen coin has a hole in the middle. If the diameter of the coin is 22 mm and the diameter of the hole is 5 mm, how
Yanka [14]

Answer:

4.4mm

Step-by-step explanation:

Circumference of circle

2 Pi r

Diameter of coin = 22mm

Therefore the radius = 11mm

Therfroe the outer edge (circumference)

= 2 Pi r

= 2 x Pi x 11

=69.11mm

For the inner edge

Diameter = 5

Radius = 2.5

Therefroe inner edge (circumference)

= 2 Pi r

= 2 x Pi x 2.5

= 15.7mm

The difference is

69.11 - 15.7

=4.4mm

7 0
3 years ago
What percent of 82 is 7
katovenus [111]

Answer: 8.5%

7/82=0.0853

Multiply by 100 to get percentage

0.0853 x 100 = 8.53

7 0
2 years ago
Is (2,4) a solution of 3x - y = 2?
guajiro [1.7K]

yes because when filling in the unknown (3*2-4=2) gets you the answer of 2.

7 0
3 years ago
Read 2 more answers
Toni simplified the expression , 22 × (16 −32 +1) ÷ 8. For Toni's first and second steps, he simplified the expression inside th
Anna007 [38]
When you subtract and add what is in the parentheses you would get -15 so I’m guessing he didn’t go from left to right when working inside the parentheses but when you solve the whole problem out you would get the answer: -41.25 If I missed something or you need me to show the work just let me know but I hope this helps !
6 0
3 years ago
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