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kati45 [8]
3 years ago
8

Please help me with this please!!!!!!

Mathematics
2 answers:
Masteriza [31]3 years ago
8 0
Best Answer: Look at the discriminant of the quadratic equations to find the number and type of solutions. The discriminant is part of the quadratic formula underneath the square root sign: b^2 - 4ac. If it is positive, then there are two real solutions for that quadratic equation. If the discriminant is 0, then there is one real solution. If the discriminant is positive, then there are two imaginary solutions.

1.) x^2 - 18 = 0
a = 1, b = 0, c = -18

b^2 - 4ac
(0)^2 - 4(1)(-18)
72

ANSWER: 2 real solutions

2.) x^2 + 5x + 7 = 0
a = 1, b = 5, c = 7

b^2 - 4ac
(5)^2 - 4(1)(7)
25 - 28
-3

ANSWER: 0 real solutions


Hope this helps
ASHA 777 [7]3 years ago
7 0
The value of the  discriminant b^2 - 4ac will tell you this :-

it =  5^2 - 4*1*7 = -3

which is negative 
Therfore there are no real number solutions

B
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The forces have a magnitude of 59 pounds, and their direction angles are zero.

<h3>What is the magnitude of force?</h3>
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  • When two forces operating on a body in opposite directions along the same line of action are equal in magnitude, they cancel one another out. When two forces operating on a body in opposite directions along the same line of action are equal in magnitude, they cancel one another out.
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  • Magnitude is a term that refers to size or importance. The depth of the Grand Canyon serves as an illustration of magnitude. The scope of the hunger crisis in the world serves as an illustration of magnitude. A measurement of the energy released by an earthquake, as shown on the Richter scale (geology).

Two forces of 17 and 42 pounds act horizontally on an object.

i.e

F1 = 17 pounds

F2 = 42 pounds

As the magnitude of the force represents the sum of all the forces

The direction is the same

Magnitude : 17 + 42 = 59 pounds

The Direction angles : 0

As they have the same direction so angle will be 0.

The forces have a magnitude of 59 pounds, and their direction angles are zero.

To learn more about the Magnitude of forces and Direction angles of forces, refer to:

brainly.com/question/14584426

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7 0
2 years ago
P divided by 5 equals -32
Lostsunrise [7]

Answer:

p = -160

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

Step-by-step explanation:

<u>Step 1: Define</u>

p/5 = -32

<u>Step 2: Solve for </u><em><u>p</u></em>

  1. Multiply 5 on both sides:                     p = -160
6 0
2 years ago
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2 years ago
How to do a ratio box with fractions? 7th grade help
shtirl [24]

Answer:

Step-by-step explanation:

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8 0
3 years ago
As part of a demographic study, a college administrator needed to survey a sample of students from the college. From each major
marissa [1.9K]

Answer:

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Step-by-step explanation:

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