3 years ago

SOLVING QUADRATIC EQUATIONS 2) Solve 2x2 - 5 = 27

Mathematics

1 answer:

Nimfa-mama [501]3 years ago

7 0

Answer:

x = ±4

Step-by-step explanation:

Step 1: Write out quadratic

2x² - 5 = 27

Step 2: Add 5 to both sides

2x² = 32

Step 3: Divide both sides by 2

x² = 16

Step 4: Take the square root of both sides

x = ±4

∴ x can equal -4 or 4

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2 years ago

Solve the system of equations for 7x+2y=16 and -21x-6y=24

Georgia [21]

Simplifying
7x + 2y = 16

Solving
7x + 2y = 16

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-2y' to each side of the equation.
7x + 2y + -2y = 16 + -2y

Combine like terms: 2y + -2y = 0
7x + 0 = 16 + -2y
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Divide each side by '7'.
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2 years ago

1. a. Is 3.2 - 5.7 positive, negative, or zero? (A. negative B. zero C. positive

swat32

3.2-5.7=-2.5 so its have to be a negative because a smaller number subtract a bigger number have to be equal to a negative number.

4 0

3 years ago

Read 2 more answers

Amelia runs a farm stand that sells strawberries and peaches. Each pound of strawberries sells for $1 and each pound of peaches

ivolga24 [154]

Answer:

14 pounds of strawberries and 42 pounds of peaches are sold