1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Oksi-84 [34.3K]
3 years ago
10

Which statement describes the first step to solve the equation by completing the square?

Mathematics
1 answer:
denis-greek [22]3 years ago
8 0
<span>Ans: Multiply both sides of the equation by 1/3 .

3x^2 + 18x = 21
</span>Multiply both sides of the equation by 1/3 . [because coefficient of x^2 must be 1]
x^2 + 6x = 7

You might be interested in
Find the missing side<br> 13 ft<br> 5 ft <br> x
Scilla [17]

Answer:

Assuming you're referring to the sides of a right triangle, the missing side X would be 12.

Step-by-step explanation:

The Pythagorean Theorem states that the two legs of a right triangle squared and added together is equal to the hypotenuse squared. 13^{2} is 169, 5^{2} is 25, 169 - 25 = 144. Take the square root of 144 and you'll get 12, which is the missing side of the right triangle.

5 0
3 years ago
Answer plzzz. Tell the truth and answer correctly
Free_Kalibri [48]

Answer:

54 feet

Step-by-step explanation:

We can use proportions

1 inch      27 inches

--------- = ------------

2 feet           x feet

Using cross products

1x = 54

The building is 54 feet

3 0
3 years ago
Simplify the expression.​ (Do not evaluate the exponents on coefficients in the​ answer.)
ycow [4]

Answer:

(-6)^5p^5

Step-by-step explanation:

To evaluate or simplify expressions with exponents, we use exponent rules.  

1. An exponent is only a short cut for multiplication. It simplifies how we write the expression.

2. When we multiply terms with the same bases, we add exponents.

3. When we divide terms with the same bases, we subtract exponents.

4. When we have a base to the exponent of 0, it is 1.

5. A negative exponent creates a fraction.

6. When we raise an exponent to an exponent, we multiply exponents.

7. When we have exponents with parenthesis, we apply it to everything in the parenthesis.

We will use these rules 2 and 7 to simplify.  First apply the 4 exponent to both -6 and p. Then add the exponent of the base -6 and p on the outside of the parenthesis.

(-6p)^4(-6p)\\(-6)^4p^4*-6*p\\(-6)^5p^5

8 0
4 years ago
Factor completely.
Svetllana [295]
To help explain how you get A for the answer:
work backwards
5(3a²+11a-4)
multiply everything by 5
5×3a²=15a²
5×11a=55a
5×-4=-20
15a²+55a-20
6 0
3 years ago
120 inch board cut in 8 inch
Vikki [24]

Answer:

15, 8 inch boards

Step-by-step explanation:

120/8=15

4 0
3 years ago
Other questions:
  • Please help me:( I've been stuck on this for so long
    15·2 answers
  • Need help thanks???!!
    13·1 answer
  • Use a formula to calculate the amount of money you would have if you invest $3000 at a rate of 5% compounded quarterly, for 3 ye
    13·1 answer
  • Find the value of x and y
    6·2 answers
  • What is the greatest number of of acute angles that a triangle can contain?
    7·2 answers
  • Can someone help me pleaseeeeeeeeee ASAP
    9·2 answers
  • Help me solve this? ​
    13·2 answers
  • How many solutions does the system y = 2x + 9 and y + -4x - 8 have?
    9·1 answer
  • Please help me with this question!!
    15·1 answer
  • Please help!!!! find the slope with the qord band above ! show me the work please !!​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!