All categories

2 years ago

What are the solutions to the quadratic equation x^2-16=0

Mathematics

1 answer:

Paha777 [63]2 years ago

3 0

Answer:

x = ±4

Step-by-step explanation:

Hi there!

$x^2-16=0$

Move 16 to the other side

$x^2=16$

Take the square root of both sides

$\sqrt{x^2}=\sqrt{16}\\x=\pm4$

I hope this helps!

You might be interested in

If Jose has a car with a mass of 55,000 kg and it is acted upon with a force of 200 Newtons. What is the acceleration?

zloy xaker [14]

Answer:

275 m/s2

Step-by-step explanation:

I know because I had this question in a test and got it correct.

6 0

2 years ago

Solve this question pls. Thanks

kirill [66]

Answer:

pretty sure is it B. -1.75 and 4 but not 100% positive

3 0

2 years ago

Sam's total expenses last month were $1840. What was his total variable cost for last

likoan [24]

Answer:

$1500

Step-by-step explanation:

It is given that

Rent = $100

Groceries and drinks = $1000

Insurance premiums = $10

Loan interest payment =$30

Clothes = $200

Utilities = $300

Home security fee = $200

Fixed cost are costs that does not vary and variable cost are costs that vary with goods and services.

In the given problem, rent , insurance premiums, loans interest payment ad home security fee are fixed cost.

Groceries and drinks, clothes and utilities are variable cost.

So, total variable cost for last month is

$\text{Total variable cost}=\$1000+\$200+\$300=\$1500$

Therefore, total variable cost for last month is $1500.

5 0

2 years ago

In the diagram, what is the measure of angle 1?

VLD [36.1K]

We know that
angle (3x) and angle (9x) are supplementary angles
so
3x+9x=180°------> 12x=180°------> x=180°/12-----> x=15°

angle (9x) and angle (1) are supplementary angles
so
9x+∡1=180---------> 9*15+∡1=180
∡1=180-9*15---------> ∡1=180-135------> ∡1=45°

the answer is
∡1 is 45°

alternative method
angle 1 = angle 3x----------> vertical angles
∡1=3x-----> 3*15-----> 45°

7 0

3 years ago

One of the legs of a right triangle measures 1 cm and its hypotenuse measures 19 cm. Find the measure of the other leg. If neces

frosja888 [35]

Hey there!:

According to the Pythagorean theorem, the sum of the squares of the legs of a right triangle is equal to the square of the hypotenuse (H):

1² + 19² = x²

1 + 361 = x²

x² = 1 + 361

x² = 362

x = √ 362

x = 19.02

Hope this helps!

6 0

2 years ago