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3 years ago

URGENT: WILL MARK BRAINLIEST

Mathematics

1 answer:

timofeeve [1]3 years ago

7 0

Answer:

The graph in the attached figure

Step-by-step explanation:

Let

x -----> the number of hours that Nancy work as a babysitter per day

y -----> the number of hours that Nancy work as a sales person per day

we know that

$x+y\leq 5$ ----> inequality A

$10x+20y\geq 60$ ----> inequality B

using a graphing tool

see the attached figure

The solution is the triangular shaded area

Remember that the time cannot be a negative number

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Step-by-step explanation:

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ivann1987 [24]

Answer:

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Step-by-step explanation:

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2 years ago

When deriving the quadratic formula by completing the square, what expression can be added to both sides of the equation to crea

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Answer:

According to steps 2 and 4. The second-order polynomial must be added by $-c$ and $b^{2}$ to create a perfect square trinomial.

Step-by-step explanation:

Let consider a second-order polynomial of the form $a\cdot x^{2} + b\cdot x + c = 0$ , $\forall \,x \in\mathbb{R}$ . The procedure is presented below:

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3) $4\cdot a^{2}\cdot x^{2} + 4\cdot a \cdot b \cdot x = -4\cdot a \cdot c$ (Compatibility with multiplication)

4) $4\cdot a^{2}\cdot x^{2} + 4\cdot a \cdot b \cdot x + b^{2} = b^{2}-4\cdot a \cdot c$ (Compatibility with addition/Existence of additive inverse/Modulative property)

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3 years ago

Read 2 more answers

Anyone got an answer also it doesn't gimme the option of making this 5pts :(

Shtirlitz [24]

Answer:

Step-by-step explanation:

Each of the squares has trinomials that factor. x^2 - 14x + 49 = (x - 7)^2

When you take the square root (to get the side length) you get x - 7. So the length of each square is x - 7) = 0;..........x=7 That's the answer to a.

The answer to b is the same. The width =7

It's a square both sides have to be equal.

The length of the rectangle when the two squares are put together is 7 +7 = 14.

Answer: Question a = 7..... Question b = 7 ......... Question C = 14

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3 years ago