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Oksanka [162]
2 years ago
7

Find the value of x.

Mathematics
1 answer:
Nuetrik [128]2 years ago
4 0
Because corresponding sides of similar figures are in proportion, we can obtain the equation:

(x+3)/4 = (2x-4)/3

Multiplying both sides by 12,

3(x+3)=4(2x-4)
3x+9=8x-16
x=5
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assuming that tide duration from low tide to high tide is 6 hours and 25 minutes, going from a high of 3.21ft and down to a low
mixer [17]
To answer this you will need to write the ratio of difference in the tides over the amount of time that goes by.

1. 3.21 ft - 0.20 ft= 3.01 ft change.
2. 3.01 change over 6 5/12 hr.
3. Divide these to find the lapse rate per hour. This is about 0.47 ft per hour.
4 0
3 years ago
Can someone please answer these questions?
Arisa [49]

Keep in mind that you can gather only like terms. Two terms can be summed/subtracted if they involve the same powers of the same variables.

So, going point by point:

  1. We can subtract the terms, because they both involve the variable b, and we have 3b-7b = (3-7)b = -4b
  2. We can sum the terms, because they all involve the variable a, and we have a+a-5a = (1+1-5)a = -3a
  3. We can't sum this terms: 3 is a pure number, while 3r involves the variable r.
  4. We can only sum the two terms: we have 7t-8t-8 = (7-8)t-8 = -t-8
  5. We can't sum this terms: -20 is a pure number, while -15p involves the variable p.
  6. We can sum the terms, because they all involve the variable g, and we have -g-g-g = (-1-1-1)g = -3g
7 0
3 years ago
PLEASE HELP
Lynna [10]

Answer:

(6,2)

Step-by-step explanation:

i used elimination method

8 0
3 years ago
What is 3 3/4 - 1 1/4
juin [17]

Answer:

2 1/2

Step-by-step explanation:

The answer is 2 1/2 simply because 3/4 minus 1/4 equals 2/4 which is equivalent equivalent to 1/2. The you would subtract 3 by 1 which is 2 so the answer is 2 1/2

6 0
3 years ago
Read 2 more answers
How many solutions are there to the system of equations graphed below if the lines are parallel?
mario62 [17]

Answer:

zero, or 0, or none. answer is A

Step-by-step explanation:

they never touch, just pick A

3 0
3 years ago
Read 2 more answers
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