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
Allisa [31]
3 years ago
5

What is the value of x, when x2 + 5 = 21?

Mathematics
1 answer:
djverab [1.8K]3 years ago
4 0

Hey there!

  • \bold{x^2+5=21}
  • <em>Firstly, subtract by the number \bold{5}  on each of your sides</em>
  • \bold{x^2+5-5=21-5}
  • \bold{Cancel:5-5} because it gives us the result of \bold{1}
  • \bold{Keep:21-5}  because it equals: \bold{16}
  • \bold{x^2=16}
  • <em>Nextly, we have to take our square root </em>
  • \bold{x=}±\bold{\sqrt{16}}
  • <em>Solve the square root and you have found your answer</em>
  • <em>\boxed{\boxed{\bold{Answer:x=4[or]x=-4}}} \bold{\checkmark}</em>

Good luck on your assignment and enjoy your day!

~\bold{LoveYourselfFirst:)}

You might be interested in
X+56&lt;533. What is the solution of the inequality?
swat32
X<477


hope this helps<3
7 0
2 years ago
If 3 pounds of apples cost $3.85, how much will 18<br> pounds of apples cost?
Mekhanik [1.2K]

Answer: $23.10

Step-by-step explanation:

18/3 = 6

3.85 x 6 = $23.10

8 0
3 years ago
WalMart offered a 15% discount off the regular price of a Ice Cream Maker. The amount of the discount is $5.00. What is the regu
Leona [35]

Answer:

$33.33

Step-by-step explanation:

We are told in the above :

WalMart offered a 15% discount off the regular price of a Ice Cream Maker.

The amount of the discount is $5.00.

The formula for Percentage Discount =

Discount/Original amount × 100

Original amount = x

Hence:

$5/x × 100 = 15%

= 5/x = 15/100

Cross Multiply

5 = 0.15 × x

5= 0.15x

x = 5/0.15

x = $33.33

Therefore, the regular price of the Ice Cream Maker is $33.33

5 0
2 years ago
What is the conjugate of 8-7i?
Natali [406]

Answer:

8 + 7i

Step-by-step explanation:

Change the sign of the imaginary part.

The conjugate of 8 - 7i is 8 + 7i.

5 0
3 years ago
Is 2/6 equivalent to 20%
anastassius [24]

Answer:

2/6 is NOT equivalent to 20%

Step-by-step explanation:

2/6 is NOT equivalent to 20%

Reason :

To convert 2/6 to percentage

Multiply 2/6 by 100

That is ,

= 2/6 × 100   %

= 1/3 × 100   %

= 100/3 %

= 33.33%

33.33% is not same as 20%. Therefore 2/6 is not equivalent to 20%

I hope this was helpful, please mark as brainliest

8 0
3 years ago
Other questions:
  • Evaluate tan 30° without using a calculator by using ratios in a reference triangle. Please Explain!
    6·2 answers
  • Mr. Snorkel drove 169 miles in 3 h 30 min. Find the rate in miles per hour
    7·1 answer
  • Solve 5y^2+20=80, where y is the real number
    6·1 answer
  • Ms. Benoit is a self-employed architect who earns $300,000 annual taxable income. For the past several years, her tax rate on th
    5·1 answer
  • The mass of Earth is made up of these parts.
    11·2 answers
  • The answer and how to do this
    9·1 answer
  • Which of the answer choices is a multiple of 4 select all that apply
    6·2 answers
  • Susan is wanting to create a garden. She needs the length of her garden to be 3 feet longer than the width. a) write a function
    8·1 answer
  • If a cube shaped box has a volume of 512 cm^3 if the box was filled with 1 cubic cm how many blocks make up each layer
    5·1 answer
  • Prove the Lines are Parallel detailed two column proof for the following Given: 1 and 3 are supplementary Prove: a || b​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!