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vichka [17]
3 years ago
15

50pts help! consider this quadratic equation. 2x^2-1=3x+4 Which equation correctly applies to the quadratic formula?

Mathematics
2 answers:
eduard3 years ago
7 0

Step-by-step explanation:

im not going to go in to detail but the answer is c

DaniilM [7]3 years ago
4 0

Answer:

c

Step-by-step explanation:

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Biologists are studying tropical plants to determine how far north each type of plant can survive. What is the population?
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What is the absolute value of 2 and -2?
xeze [42]

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3 years ago
3(1−9a)+22a=2(2a−9)−15<br> i need a step by step explanation please
SpyIntel [72]

Answer:a=4

Step-by-step explanation:

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A. Write the formula for the area A of a trapezoid. Use b1 and b2 for the lengths of the bases, and use h for the height.
lesya692 [45]

Answer:

(a) The formula for the area A of a trapezoid

                 A = \frac{1}{2}(b_{1}+ b_{2})h

(b) Solve the formula for h

                 h = \frac{2A}{b_{1}+b_{2}}

(c) Find the height h of the trapezoid

     The height h of the trapezoid is 6 cm.

Step-by-step explanation:

(a) The formula for the area A of a trapezoid

As b₁, b₂ being the lengths of the bases and 'h' is the height.

So, the formula for the area A of a trapezoid

A = \frac{1}{2}(b_{1}+ b_{2})h

(b) Solve the formula for h

As the formula for the area A of a trapezoid is  

A = \frac{1}{2}(b_{1}+ b_{2})h

So, formula for height h of trapezoid

h = \frac{2A}{b_{1}+b_{2}}

(c) Using the new formula to find the height h of the trapezoid

Using  h = \frac{2A}{b_{1}+b_{2}} to find the height h of the trapezoid.

So,

h = \frac{2A}{b_{1}+b_{2}}

h = \frac{2(72)}{16+8} ∵b₁ = 16, b₂ = 8, A = 72cm²

h = \frac{144}{24}

h = 6 cm

So, h = 6 cm

Hence, The height h of the trapezoid will be 6 cm.

Keywords: area of trapezoid, length, base, height

Learn more about height of trapezoid from  brainly.com/question/9967451

#learnwithBrainly

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3 years ago
Is 0.258 a rational number?
MrRissso [65]

Answer:

Step-by-step explanation:

Yes it is a rational number

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2 years ago
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