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Lelechka [254]
3 years ago
8

Select the correct answer.Solve the following equation for80x2 + 92x – 84 = 0​

Mathematics
1 answer:
nikklg [1K]3 years ago
3 0

Answer:

x = 0.6 and x = -1.75

Step-by-step explanation:

80x2+92x−84=0

Use quadratic formula

x = (−b ±√(b2−4ac))/√2a

x = (-92 ± √(35344)) / 160

x = 95/160 and x = -280 / 160

x = 0.6 and x = -1.75

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What is -1/3+w=5 3/8 express in simplest form
Elodia [21]
Let's solve your equation step-by-step.<span><span><span><span>
</span></span></span></span>\frac{-1}{3}<span><span>+w</span>=<span>5</span></span><span>\frac{3}{8}</span>
Step 1: Simplify both sides of the equation.<span><span>
w+</span></span>\frac{-1}{3}<span>=</span><span>\frac{43}{8}</span>
Step 2: Add \frac{1}{3} to both sides.<span><span><span>
w+</span></span></span>\frac{-1}{3}<span><span>+</span></span><span>\frac{1}{3}</span><span>=</span>\frac{43}{8}<span>+</span><span>\frac{1}{3}</span><span>
w=</span><span>\frac{137}{24}</span>


Answer:<span>w=5</span><span>\frac{17}{24}</span>
6 0
4 years ago
Angle A is shown below.<br>What is the measure of LA, in degrees?​
Vesna [10]

The measure of angle A is 55°.

Solution:

Let us take B be the adjacent angle of 145°.

<em>Sum of the adjacent angles in a straight line = 180°</em>

⇒ m∠B + 145° = 180°

Subtract 145° from both sides.

⇒ m∠B + 145° - 145° = 180° - 145°

⇒ m∠B = 35°

The adjacent angle of 145° is 35°.

In the image, angle B and angle A equal to 90°.

⇒ m∠B + m∠A = 90°

⇒ 35° + m∠A = 90°

Subtract 35° from both sides.

⇒ m∠A = 55°

The measure of angle A is 55°.

8 0
3 years ago
Question 1
fredd [130]

Hello!

The graphs of sine and cosine are waves. Therefore, choice A and B are wrong.

The graph of f(x) = cot(x) is an inverse of f(x) = tan(x), so therefore the graph of f(x) = cot(x) has the lines similar to the graph above, but it's flipped.

So therefore, the graph shown above is choice C, f(x) = tan x.

8 0
3 years ago
In a school library, there are 780 books of English and 364 books of Science. Ms. Yakang, the librarian of the school wants to s
V125BC [204]

Answer:

Step-by-step explanation:

you have 1144 books but without knowing how many rows there  are i cant help you find the minimum number.

but all you have to do is take the number of the books all together (1144)

then divide that number by how many rows or shelf there are

7 0
4 years ago
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Anestetic [448]

Answer:

2700

Step-by-step explanation:

9x20x15= 2700

8 0
3 years ago
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