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Mashutka [201]
3 years ago
6

Determine x and y knowing that 2y +2x =257

Mathematics
1 answer:
m_a_m_a [10]3 years ago
3 0
\left[y \right] = \left[ \frac{257}{2}-x\right][y]=[​2​​257​​−x] . totally answer
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Is 400mL equal to 4L ?
Reil [10]
Yes, it is because there is 100 mL in 1 L
100 mL=1 L
Multiply the whole equation by 4.
400 mL=4 L

Hope this helps :)
8 0
4 years ago
The following figure is made of a triangle and a rectangle. All of the sides of the triangle are the same length.
Andru [333]

Answer:

130cm

Step-by-step explanation:

the perimeter of the triangle is 15 the perimeter of the rectangle is 150 + 115 + 15 equals 103 ♥ hope it helped

7 0
3 years ago
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An experiment consists of choosing one card from a standard deck and then replacing it. The experiment was done several times, a
jasenka [17]
<span> the answer is <span>4/7 hope this helps</span></span>
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3 years ago
31 workers are working on a construction site. 5 more workers work for company A than for company B. How many workers work for e
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6 0
3 years ago
For what value of x will the function f(x) = -3(x - 10)(x - 4) have a maximum value? Find the maximum value.
gayaneshka [121]

Hello!

To find the maximum value of the function f(x) = -3(x - 10)(x - 4), the easiest way is to find the vertex using the formula: x = -b/2a.

Firstly, we need to simplify f(x).

f(x) = -3(x - 10)(x - 4)

f(x) = -3(x² - 14x + 40)

f(x) = -3x² + 42x + -120

Since the equation f(x) is now simplified to standard form, we can find the vertex.

a = -3, b = 42, and c = -120

x = -(42)/2(-3) = -42/-6 = 7

Then, we substitute 7 into the the function f(x) = -3(x - 10)(x - 4), or

f(x) = -3x² + 42x + -120, to find the y-value of the vertex.

f(x) = -3(7 - 10)(7 - 4)

f(x) = -3(-3)(4)

f(x) = 27

The vertex of f(x) is (7, 27).

Therefore, the maximum x-value for the function f(x) is 7.

4 0
3 years ago
Read 2 more answers
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