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3 years ago

Evaluate the expressions below for the given values. B AND D!

Mathematics

1 answer:

Hatshy [7]3 years ago

3 0

Answer:

b. -4

d. 8/3 or 1 5/3

Step-by-step explanation:

Question B:

1. $5 -(-1-2)^2$

2. $5-(-3)^2$

3. $5 - 9$

4. $-4$

Question D:

1. $\frac{1}{2}(2) + \frac{1}{3}(5)$

2. $1 + \frac{5}{3}$

3. $1 \frac{5}{3}$

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4 years ago

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Answer:

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3 years ago

an arch way is modeled by the equation y=-2x^2+8x. A rod is to be placed across the archway at an angle definded by the equation

patriot [66]

So.. hmm check the picture below

now, to know where A and B are, that occurs when the parabolic equation equates the linear one

thus

$\bf y=-2x^2+8x
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y=y\implies -2x^2+8x=\cfrac{x+10.34}{2.23}
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now, running that on the quadratic formula, you end up with the values of 3.00402497440839842242 and 0.77175977895483027713

thus B rounded up is 3.004 and A rounded up is 0.7718

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3 years ago

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Rus_ich [418]

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3 years ago