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kolezko [41]
3 years ago
10

Solve the proportion 7x + 1 9 = 2x 3

Mathematics
1 answer:
gayaneshka [121]3 years ago
4 0
How this makes no sense i’m in middle school
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Find the range of the function.<br><br> f(x) = (x + 5)2 + 8
Marizza181 [45]
Finding the vertex of the parabola
<span>y = (x + 5)^2 + 8  the vertex is at (-5, 8)
its coefficient so the parabola turns upward so  the range is  [8 , inf]</span>
6 0
3 years ago
A solution of salt and water is 20% salt. If 25% of the water is removed, what is the percentage of salt in the new solution?
Ratling [72]
So lets say that this salt and water solution consists of 100 liters.

Then that means 20 liters is salt, and 80 liters out of the 100 is water.



Now, we remove 25% of the water. 25% of 80 liters is 20 liters. So, we are left with 80-20, or 60 liters.



Now in all we have 20 liters of salt, and 60 liters of water.

The percentage of salt in the new mixture will be 20/(20+60) = 20/80 = 25%.



Your answer is 25%
4 0
3 years ago
Find s8 for the following geometric sequence: 3, – 6, 12, – 24.
Alekssandra [29.7K]

Answer:

B. -255

Step-by-step explanation:

This picture is from the user of: DBlaze.

4 0
3 years ago
How can I solve this?
elixir [45]

Answer:

x=8/21

Step-by-step explanation:

(3/4)/(2/7) = 1/x

(3/4)x = (2/7)

x = (2/7) / (3/4)

x = (2/7) * (4/3)

x = 8/21

3 0
2 years ago
Read 2 more answers
Question is in pic! Plz show work!
kipiarov [429]

Answer:

x = 10   and x = -2

Step-by-step explanation:

The equation has 2 solutions because we have a square.  When things are squares, we get a positive and negative solution.

(x-4)^2 - 28 = 8

Add 28 to each side

(x-4)^2 - 28+28 = 8+28

(x-4)^2  = 36

Take the square root of each side

sqrt((x-4)^2)  = ±sqrt(36)

x-4 = ±6

Add 4 to each side

x-4+4 = 4 ±6

x = 4 ±6

x = 4+6    and   x = 4-6

x = 10   and x = -2

4 0
3 years ago
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