3 years ago

Nancy found that x = 1 is one solution to the quadratic equation (x + 2)2 = a. What is the value of a?

Mathematics

2 answers:

solniwko [45]3 years ago

4 0

ANSWER

a=9

EXPLANATION

The given quadratic equation is

${(x + 2)}^{2} = a$

If x=1 is a solution, then it must satisfy this equation:

${(1 + 2)}^{2} = a$

${3}^{2} = a$

$a = 9$

Therefore the value of 'a' is 9

Cerrena [4.2K]3 years ago

3 0

Answer:

answer is A

Step-by-step explanation:

You might be interested in

Please help me, 6th grade math

Stells [14]

Answer:

Mean: 3.2 Median: 3.2 Mode:3.1 Range:0.5

Step-by-step explanation:

Easy.

5 0

3 years ago

Which equation would have real zero(s) corresponding to the x-intercept(s) of the graph below?

MA_775_DIABLO [31]

Answer:

Choice A.

$y = - {2}^{x} + 4$

Step-by-step explanation:

Use graphing calculator

7 0

3 years ago

in a company, 40% of the workers are women. If 1380 woman work for the company, how many total workers are there?

mrs_skeptik [129]

Answer:

Step-by-step explanation:

The total number of workers is our unknown. If 40% of this unknown number are women and the number of women is 1380, then the equation looks like this:

(remember that the word "of" generally means to multiply)

(also remember that we have to use the decimal form of a percent in an equation)

.40(x) = 1380 then divide to get the number of total workers:

x = 3450

5 0

3 years ago

Zebediah is an American traveling with a tour group in Eastern Europe. During a stop in Rommania, he purchases a souvenir that i

denis23 [38]

So 1 USD is 2.89 RON
That means...
177 ÷ 2.89 = 61.24USD

5 0

3 years ago

Ms. Sculley needs to arrange 28 chairs into equal rows. She needs more than 2 chairs in each row and more than 2 rows. How many

Ilia_Sergeevich [38]

Answer: 7 rows

Step-by-step explanation:

she will have 7 rows with 4 seats in each row or 4 rows with 7 seats in each row

8 0

3 years ago