answer.
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
jonny [76]
1 year ago
5

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

Mathematics
2 answers:
horrorfan [7]1 year ago
8 0
Insert 1 into your equation (1+2)2=a  1+2=3 and 3X2=6 so therefore a=6
 
coldgirl [10]1 year ago
6 0
<span>(x + 2)</span>·<span>2 = a

(1 + 2)</span>·2 = a

3·2 = a

a = 6
You might be interested in
A good practice in mathematics is to always check your work. Explain why it is very important to do so when you are solving equa
luda_lava [24]
If you don't double check your answers by substituting them back into the original equation, you may be introducing extraneous solutions into the problem which is why you should always check to confirm your answer is accurate. I hope this helps! :)

 

5 0
1 year ago
A rectangular pool is 20 feet wide and 50 feet long. A deck used for sunning surrounds the pool. The deck is the same width all
fredd [130]
The answer is B. 3 feet
3 0
2 years ago
Roger went shoe shopping with his cousins Derek and Kamal. Roger bought a pair of basketball shoes that cost $74.95. Derek spent
bezimeni [28]

Answer:

I'm pretty sure its $19.65

8 0
2 years ago
HJ is twice JK. J is between H and K. If HJ= 4x and HK=78, find Jk.
ss7ja [257]
You'll find it easier to understand if you illustrate the problem as what is shown in the attached picture. From the illustration and the problem description, two equations can be formulated:

HJ = 2JK
HJ + JK = HK

2JK + JK = 78
3JK = 78
JK = 78/3
JK = 26

6 0
2 years ago
Nikki drew a rectangle with a perimeter of 18 units on a coordinate grid. Two of the vertices were (4, –3) and (–1, –3). What co
Talja [164]

Answer:

There are two possible solutions for the other two vertices of the rectangle:

(i) (4, 1), (-1, 1), (ii) (4, -7), (-1, -7)

Step-by-step explanation:

Geometrically speaking, the perimeter of a rectangle (p) is:

p = 2\cdot b + 2\cdot h (1)

Where:

b - Base of the rectangle.

h - Height of the rectangle.

Let suppose that the base of the rectangle is the line segment between (4, -3) and (-1, -3). The length of the base is calculated by Pythagorean Theorem:

b = \sqrt{[(-1)-4]^{2}+[(-3)-(-3)]^{2}}

b = 5

If we know that p = 18 and b = 5, then the height of the rectangle is:

2\cdot h = p-2\cdot b

h = \frac{p-2\cdot b}{2}

h = \frac{p}{2}-b

h = 4

There are two possible solutions for the other two vertices of the rectangle:

(i) (4, 1), (-1, 1), (ii) (4, -7), (-1, -7)

8 0
1 year ago
Other questions:
  • Part A: Solve −np − 70 &lt; 40 for n.
    15·1 answer
  • Jerry received both the 15th highest and the 15th lowest grade in the class. how many students are there in the class?
    5·1 answer
  • a dealer bought some tires for 6500 the tires were sold for 9500 making $50 on each tire how many tires were involved
    5·2 answers
  • A scientist is studying red maple tree growth in a state park. She measured the trunk diameters of a sample of trees in the same
    14·2 answers
  • For a sample of 100 students, the median number of text messages sent per day is 90, the first quartile is 78, and the third qua
    5·2 answers
  • On a store counter are exactly two boxes containing only purple marbles and yellow marbles. Box A has 30 purple marbles and 20 y
    10·1 answer
  • Polygon YYY has an area of 111111 square units. Celia drew a scaled version of Polygon YYY using a scale factor of 333 and label
    5·1 answer
  • You open a business selling school supplies and tutoring sessions. In your first week, you had $9,000 in sales. You ran a promot
    7·1 answer
  • Boden is making a prize wheel for the school fair. The ratio of winning spaces to losing spaces is shown in the diagram. The tab
    10·2 answers
  • The temperature rises 20ºF and then drops by 11ºF. If the temperature started at -5ºF, what temperature change would be required
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!