Solve this equation for x in terms of y: 3x+2y=4

Answers

Answer 1

Answer: 3x+2y=4
3x=4-2y

Answer: $x = (4-2y)/(3)$

Answer 2

Answer: $3x+2y=4\n\n3x=4-2y\ /:3\n\nx= (4)/(3) - (2)/(3) y$

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The elevation we call sea level is actually the average level of the sea. This means that at average sea level, the elevation is zero. In reality, the level of the sea rises and falls in what are called tides. Low tide is the point of lowest sea level in a tidal period. High tide is the point of highest sea level in a tidal period. The height above or below average sea level is called elevation. An elevation below sea level is considered a negative value, while an elevation above sea level is positive.Winston lives near the ocean. He regularly brings an altimeter to the beach to measure the elevation of the ocean’s surface. You will use the data Winston gathered to complete tasks about the rising and falling of the ocean’s surface. When necessary, sketch a diagram of the situation on a separate sheet of paper to assist you.
On Monday at 1pm, when the ocean’s surface was at an elevation of 2.2 feet, Winston went to a surf shop that was 8.2 feet above the ocean’s surface. At 7 p.m. when the ocean’s surface was at an elevation of -2.4 feet, Winston ate dinner at a restaurant whose deck was 10 feet above the ocean’s surface.

What was the net change in the elevation of the ocean’s surface from 1 p.m. to 7 p.m.?

Answers

Answer:

-4.6 ft

Step-by-step explanation:

The question is asking for the net change in the ocean's surface elevation, so we can ignore the parts of the question that mention his own elevation at the time of the measuring. We can see at 1, the elevation was 2.2, and at 7, the elevation was -2.4. The net change is the whole change over the period of time, so we just need to find the difference between the two. Adding them together gives you the distance from each elevation the sea's surface was, which is -4.6 ft as the elevation decreased

Solve the system of equations by using the elimination method.2x – 7y = 3
5x – 4y= -6
pls help me

Answers

Answer:

Hi! The correct answer is (-2,-1)!

Step-by-step explanation:

~Add the equations in order to solve for the first variable, Plug this value into the other equations in order to solve for the remaining variables~

What is the measure of CED?

Answers

Answer:

try 106, if its not try 108

Step-by-step explanation:

If f(x) = 0.5(1 – x), what is the value of f(–1)?A. 0
B. 1
C. 2.5
D. 0.5

Answers

Answer:

$f(-1)=1$

Step-by-step explanation:

If $f(x) = 0.5(1 - x)$ , find the value of f(-1)

we are given with function $f(x) = 0.5(1 - x)$

To find f(-1) we plug in -1 for x in f(x)

$f(x) = 0.5(1 - x)$

$f(-1) = 0.5(1 - (-1))$

$f(-1) = 0.5(1+1)$

$f(-1) = 0.5(2)$

$f(-1)=1$

f(x) = 0.5(1 - x)
f(-1) = 0.5(1 - (-1))
= 0.5(2)
= 1
answer B

HOPE I AM THE BRAINLIEST I NEED IT

What are the next four multiples of 1/8?

Answers

So,

We just keep adding $(1)/(8)$ to the number.

$(1)/(8) ; (2)/(8) ; (3)/(8) ; (4)/(8); (5)/(8)$

an easy way is to kee p multipliying it by the numbers
1/8 times 1=1/8
1/8 times 2=2/8
1/8 times 3=3/8
1/8 times 4=4/8
1/8 times 5=5/8

Multiply and simplify
(5a + 2bc) (5a - 2bc)

Answers

One of the tools that's great to keep in your algebra toolbox for the rest of your life is:

The product of (sum of 2 things) (difference of 2 things) = (difference in their squares).

For example: (x + y) (x - y) = (x² - y²)

When you're trying to factor algebra expressions, it's always good to keep your
eyes open for the difference of two squares, and remember that it's going to be
(sum) x (difference) of the things that they're squares of.

Here you have (a sum) x (a difference) of the same 2 things:

(5a + 2bc) (5a - 2bc)

You can multiply them out, or just use the little tool above:

(5a)² = 25a²

(2bc)² = 4b²c²

So (their sum) x (their difference) is (25a² - 4b²c²) .

⇒ (a + b)(a - b) = a² - b²

Multiply and simplify :

$(5a + 2bc) (5a - 2bc) \n =25a^2+10abc-10abc-4bc^2 \n =25a^2-4b^2c^2$

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