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Darya [45]
3 years ago
11

4x + y = 4

Mathematics
1 answer:
Aneli [31]3 years ago
7 0

Answer:

if u substract the equations u get 4x = 1, therefore x = 1/4

Step-by-step explanation:

(8x + y) - (4x + y) = 5 - 4

4x = 1

x = 1/4

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Let f(x) = x^2 + 4x - 31. for what value of a is there exactly one real value of x such that f(x) = a?
allsm [11]
This value of "a" is exactly the y-coordinate of the vertex of the parabola
y = x%5E2+%2B+4x++-+31.

To find it, complete the square:

x%5E2+%2B+4x++-+31 = %28x%2B2%29%5E2+-+4+-+31 = %28x%2B2%29%5E2+-+35.

So, this value of "a" is a = -35.










Figure. Plot y = x%5E2+%2B+4x++-+31.


5 0
3 years ago
A rectangular container is filled with water to a depth of 40 mm. The container is 60 mm long and 50 mm wide. The container is t
blondinia [14]

Volume is L x W x H.

Original volume: 40 x 60 x 50 = 120,000 cubic mm.

New Volume: 44 x 60 x 50 = 132,000 cubic mm


Change in volume: 132,000 - 120,000 = 12,000 cubic mm

4 0
4 years ago
Solve for x, show all of your work: -2x – 6 < 12
vova2212 [387]
Add 6 to both sides so you have -2x = 18. If you divide both sides by -2 you will get x = -9
3 0
3 years ago
Read 2 more answers
Is 17/4 a rational number
marusya05 [52]

Answer:

Yes

Step-by-step explanation:

Hope that this helps :)

P.S. tell me if this is wrong

3 0
3 years ago
ANSWER THIS MATH QUESTION
shusha [124]

Answer:

<h2>The slope of the line tangent to the function at x = 1 is 2.01 ≅2.</h2>

Step-by-step explanation:

Using the formula of derivative, it can be easily shown that, \frac{d f(x)}{dx} = 2 where f(x) = x^{2}.

Here we need to show that as per the instructions in the given table.

Δy = f(x + Δx) - f(x) = f(1 + 0.01) - f(1) = (1 + 0.01)^{2} - 1^{2} = 0.0201.

In the above equation, we have put x = 1 because we need to find the slope of the line tangent at x = 1.

Hence, dividing Δy by Δx, we get, \frac{0.0201}{0.01} = 2.01.

Let's examine this taking a smaller value.

If we take Δx = 0.001, then Δy = 1.001^{2} - 1^{2} =  0.002001.

Thus, \frac{0.002001}{0.001} = 2.001.

The more smaller value of Δx is taken, the slope of the tangent will be approach towards the value of 2.

5 0
3 years ago
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