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LiRa [457]
2 years ago
11

What are the values of a, b, and c in the quadratic equation 0 = 5x - 4x² - 2?

Mathematics
1 answer:
Alisiya [41]2 years ago
3 0

Answer:

a = -4, b = 5, c = -2

(the third option)

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What’s this someone answer 15 points
olga55 [171]

Answer:

Option b

Step-by-step explanation:

Points (0, 1) and (1, -1)

  • y= -2x+1, x<1

Points (1, 1)  and (2, 0)

  • y= - x+2, x≥2

option b covers these

8 0
3 years ago
An acute angle θ is in a right triangle with sin θ = seven eighths. What is the value of cot θ?
olga2289 [7]
Draw a right triangle ABC, with m(CAB)=∅.

Let CB=7 units, AC=8 units, so by the Pythagorean theorem:

AB= \sqrt{ AC^{2} - BC^{2} }= \sqrt{ 8^{2} - 7^{2} }=  \sqrt{64-49} = \sqrt{15} (units)

so we have drawn a triangle where sin∅=7/8

in this triangle, cot∅=(adjacent side)/(opposite side)=\frac{ \sqrt{15} }{7}

Answer: <span>square root of fifteen divided by seven</span>

6 0
3 years ago
A phase modulator produces a maximum phase shift of 45 degrees. The modulation frequency range is 300 to 4000 Hz. What is the ma
sergejj [24]

Answer:

Maximum frequency deviation is 2616.29509 Hz

Maximum frequency deviation=(4000-3000)cos45

Max frequency deviation=2616.29509 Hz

8 0
3 years ago
It is about 350 miles from Ruidoso, New Mexico, to Abilene, Texas. Haruko has already driven 75 miles and made it to Roswell, Ne
kvv77 [185]

Answer:

55 miles per hour

Step-by-step explanation:

Given that:

Distance from Mexico to Texas 350 miles

Miles already traveled = 75 miles

Hence, miles left ;

(350 miles - 75 miles) = 275 miles

To complete 275 miles in 5 hours ;

Speed = distance / time

Speed = 275 / 5

Speed = 55 miles per hour

4 0
3 years ago
The height of a triangle is 3cm less than the length of its base and is area is 27m,find the height
Shkiper50 [21]
Area of a triangle=bh/2

27= x(x-3)/2
27= (x^2-3x)/2
54= x^2-3x
x^2-3x-54=0
(x-9)(x+6)=0

x=9, x=-6.
In this case, x must equal 9 since the base cannot be a negative number.

Final answer: Height=6 m
6 0
3 years ago
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