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
Veronika [31]
3 years ago
10

What is the answer to 21=(x+3)2

Mathematics
1 answer:
IceJOKER [234]3 years ago
3 0
First, distribute 2 to the (x+3) to get:
21 = 2x+6
subtract 6 from both sides to get:
15 = 2x
Finally, we divide both sides by 2 to simplify x to:
x = 7.5 (OR) x = 7  \frac{1}{2}
(Just so you know, if you pick a brainliest answer, both you and the person who got the brainliest answer get some points.
You might be interested in
A rectangle has a length of 32 yards less than 3 times its width. If the area of the rectangle is 748 square yards, find the len
Blababa [14]
I hope this helps you

4 0
3 years ago
Using​ 45-in. fabric, Regan needs 2 and one fourth yd for a​ dress, one fourth yd of contrasting fabric for the band at the​ bot
Arte-miy333 [17]

Answer:

7\dfrac14$ yards

Step-by-step explanation:

Regan needs the following:

2\dfrac{1}{4} yards for a​ dress

\dfrac{1}{4}$ yards of contrasting fabric for the band at the bottom$\\4\dfrac{3}{4}$ yards for a coordinating jacket.

Total Length of fabric needed

= 2\dfrac{1}{4}+\dfrac{1}{4}+4\dfrac{3}{4}\\=2+4+\dfrac{1}{4}+\dfrac{3}{4}+\dfrac{1}{4}\\=6+1+\dfrac{1}{4}\\=7\dfrac{1}{4}$ yards

The number of yards of 45-in. fabric needed is 7\dfrac14$ yards.

4 0
3 years ago
Read 2 more answers
Oh please help me with this!!!
Vesna [10]

Answer:

x+74=180

x=180-74

x=106

x=4y+22

106-22=4y

84/4=y

21=y

y=21

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Who knows how to do this Bc I don’t understand
Fynjy0 [20]

Answer:

WV should be equal to XY

Step-by-step explanation:

since it is the HL postulate meaning hypotenuse and leg, we need to show that the hypotenuses of both triangles are equal since we are already given that one of their legs are congruent. we are also given that they are right triangles.

7 0
3 years ago
Graph the line that passes through the points (6, 4)and (8, 8) and determine the equation of the line.
Lesechka [4]
Wow, what a coincidence, I just learned this at school today!
1. Slope
M= yb-ya/xb-xa
M= 8-4/8-6
M= 4/2
M= 2

2. Y-intercept
Y= mx + b
4 = (2)(6) + b
4 = 12 + b
4 = 12 + b
-12 = - 12 + b
-8 = b

Therefore, the equation is Y = 2x - 8
6 0
3 years ago
Other questions:
  • 17........................
    14·2 answers
  • What is 4 to the 1/2 power
    12·1 answer
  • the radius of the center circle of a basketball court is 6 feet. What is the circumference of the center circle.
    10·2 answers
  • Use multiplication and the distributive property to find the quotient 75/3
    14·1 answer
  • PLEASE HELP ASAP 28 POINTS!!!! PLS PLS PLS PLS PLS PLS HELP
    7·2 answers
  • SOMEONE PLEASE HELP ME WITH THIS!!!!! ITS GEOMETRY
    14·1 answer
  • Measure ∠A and ∠B and find their sum. How are the angles related?
    14·2 answers
  • Given the width of the lawnmower is 5 feet and the
    13·2 answers
  • what is the probability of seeing a sample mean for 21 observations less or equal to the sample mean that we observed
    6·1 answer
  • Write an equation in slope-intercept form for the line with slope −2/3 and y-intercept 2.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!