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QveST [7]
3 years ago
14

Solve the equation 2x^2 + 5x – 8 = 5/2x + 20 by writing a linear-quadratic system and solving using the intersection feature of

a graphing calculator. Round to the nearest tenth.

Mathematics
2 answers:
Annette [7]3 years ago
5 0

Answer: it is A.

Step-by-step explanation:

NNADVOKAT [17]3 years ago
4 0

Answer:

Option (A)

Step-by-step explanation:

2x² + 5x - 8 = \frac{5}{2}x + 20

2(2x² + 5x - 8) = 2(\frac{5}{2}x+20)

4x² + 10x - 16 = 5x + 40

4x² + 10x - 5x - 16 - 40 = 0

4x² + 5x - 56 = 0

By using graphing calculator,

x - intercepts are,

x = -4.4 and x = 3.2

Therefore, Option (A) will be the correct option.

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All together, the two girls ate 8/15 of a pizza. you mulitply your fractions out of equal denominaters and get that.
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Which expression is undefined?<br> ОА<br> A 0:6<br> B. 6:0<br> C-14:3<br> O 0 14 = (-3)<br> D
avanturin [10]

Answer:

c

Step-by-step explanation:

because it would have many solutions

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Alenkinab [10]

Answer:

So ofc it's third

Step-by-step explanation:

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36² + 15² = c²

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5 0
3 years ago
Read 2 more answers
Calculate δe, if q= 0.769 kj and w= -860 j .
Andreyy89
<span>Best Answer: 1) Q is positive therefore the process is endothermic. .769kj+-.810kj=-.041kj 2) Heat is released meaning it is exothermic. -66.9kj+45=-21.9kj 3) 7.29kj. Endothermic.</span>
7 0
3 years ago
The curved part of this figure is a semicircle. What is the best approximation for the area of this figure? 18+12.125π units² 36
andreyandreev [35.5K]

Answer:

18+12.125π units²

Step-by-step explanation:

The diameter of the semicircle can be found by the use Pythagoras theorem.

Δx²+Δy²=d²

Δx=3--1=4

Δy=3--6=9

d²=4²+9²

d=√(16+81)

Area=πr²/2

=π×(√(16+81)/2)²÷2

=[π×(97)/4]/2

=97π/8

=18+12.125π units²

97π/8 is equivalent to 18+12.125π units²

3 0
3 years ago
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