MATHEMATICS MIDDLE SCHOOL

The difference between the water levels for high and low tide was 3.6 feet. The low is .2 foot. Write an equation to find the water level at high tide.

Answers

Answer 1
Answer:

Answer:

H_(x) = 3.8ft

Step-by-step explanation:

Thinking process:

Let the problem be expressed like this:

The water level in the high tide be given by: H_(x)

The water level in the high tide be given by: L_(x)

The difference between the two is given by the equation: H_(x) -L_(x) = 3.6

The height in in low tide is 0.2 ft, so the equation becomes:

H_(x) - 0.2 = 3.6 \nH_(x) = 3.8ft
Answer 2
Answer: .2+3.6=3.8 because all you do is add the .2 feet with 3.6 feet

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Brooke is 5ft tall. She is looking for a tree that is 50 ft tall. Her shadow is 2 ft tall , how will she know when she finds a tree that is 50ft tall

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We'll need to know the LENGTH of her shadow. Its tallness doesn't help, and is pretty weird anyway.

*********PLEASE I NEED HELP ********
IN 1,2,3

Answers

Not sure if this is your teacher’s preferred format, but I hope this helps.

What two numbers multiply to 126 and add to 23

Answers

First, list the factors of 126. Keep going until you find a set of factors that adds to 23. 

1 and 126
2 and 63
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Alex was counting his coins by 2s. because one coin was left over he counted them by 3s. again there was one coin left over so he counted by 4s the 5s the 6s and finally 7s. each time there was one left over. knowing that alex did not have more than 800 coins exactly how many coins did he have

Answers

To know that Alex did not have more than 800 coins exactly.Alex had 421 coins.

Well, we know that however many coins he does have, x, is not more than 800 AND cannot be divided by 2, 3, 4, 5, 6, or 7.

So,we need to find a number that can divide into 800 but the rest cannot.

x mod 3=1, x mod 4= 1, x mod 5 = 1 and x mod 7 =1.

Note that if x mod 3 =1 and x mod 4 =1 then x must be of the form 12a+1. So (12a+1) mod 2= 1

What is counting?

Counting is the process of determining the number of elements of a finite set of objects, i.e., determining the size of a set.

(12a+1) mod 6 =1.

That is you need not have the equations for 2 and 6.

To satisfy the 4 equations above x must be of the form

(3*4*5*7)b+1 =420b+1.

Knowing that x <800 we get that b=1 and so x=421.

Therefore Alex had 421 coins.

To learn more about the counting visit:

brainly.com/question/25135937

#SPJ2
 (My process of thinking)
 
 Well, we know that however many coins he does have, x, is not more than 800 AND cannot be divided by 2, 3, 4, 5, 6, or 7. So, I need to find a number that can divide into 800 but the rest cannot.
x mod 3=1, x mod 4= 1, x mod 5 = 1 and x mod 7 =1. 
Note that if x mod 3 =1 and x mod 4 =1 then x must be of the form 12a+1. So (12a+1) mod 2= 1 
and (12a+1) mod 6 =1. That is you need not have the equations for 2 and 6. 
To satisfy the 4 equations above x must be of the form (3*4*5*7)b+1 =420b+1. Knowing that x <800 we get that b=1 and so x=421. Alex had 421 coins!

Ann needs 42 feet of fabric to make a small quilt. How many yards of fabric should she buy? A. 13 yards B. 14 yards C. 21 yards D. 126 yards

Answers

B. Because 42 feet divided by 3 is 14 yards

Determine the mechanical energy of this object: a 1-kg pendulum has a speed of 2 m/s at a height of 1 meter.

Answers

I am going to help you using physics......

Mechanical Energy = Potential Energy + Kinetic energy (or vice versa)

ME = PE + KE

PE = mgh ( m= mass; g = gravity constant which is 9.81; h = height)
       = (1kg)(9.81)(1m)
PE = 9.81

KE = 1/2mv^2  (m = mass)(v = velocity)
       = 1/2(1 kg)(2 m/s^2)
       = (1/2)(4)
KE = 2


ME = KE + PE
ME = 9.81 + 2
ME = 11.81

hope this helps :)

Answer:11.8j

Step-by-step explanation:
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