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
Butoxors [25]
3 years ago
13

1. Find the value of x in the equation √ x + 5 = √ x + 45. A. 16 B. 4 C. 1 D. 2

Mathematics
2 answers:
Nimfa-mama [501]3 years ago
8 0

Answer: Option 'A' is correct.

Step-by-step explanation:

Since we have given that

\sqrt{x}+5=\sqrt{x+45}

We need to find the value of x in the above equation:

\sqrt{x}+5=\sqrt{x+45}\\\\\text{ On squaring both sides , we get}\\\\(\sqrt{x}+5)^2=x+45\\\\x+5\sqrt{x}+25=x+45\\\\5\sqrt{x}+25=45\\\\5\sqrt{x}=45-25=20\\\\\sqrt{x}=\frac{20}{5}\\\\\sqrt{x}=4\\\\\text{ on squaring both sides}\\\\x=4^2=16

Therefore, the value of x = 16

Hence, Option 'A' is correct.

Korvikt [17]3 years ago
7 0
I think you mean
sqrt x + 5 = sqrt (x+45)


if you plug in x = 4,
left side = sqrt 4 + 5 = 2+ 5 = 7

right side = sqrt (4+45) = sqrt 49 = 7

so the answer is x = 4 :)
You might be interested in
in a certain pentagon, the interior angles are a,b,c,d,e where a,b,c,d,e are integers strictly less than 180. ("Strictly less th
guajiro [1.7K]

Answer:

  least to greatest: {61, 61, 61, 178, 179}

Step-by-step explanation:

If the third-largest angle is 61°, the smallest three angles cannot be larger than 183°. Since the total of all angles must be 540°, and the total of the largest two cannot be greater than 179°×2 = 358°, the sum of the smallest three must be at least 540° -358° = 182°.

So, the possible sets of angles with the smallest 3 totaling 182° or 183° are (in degrees) ...

  {60, 61, 61, 179, 179} . . . . two modes

  (61, 61, 61, 178, 179} . . . . . one mode -- the set you're looking for

3 0
3 years ago
Read 2 more answers
G60°
mars1129 [50]
C
Should be 25.........
4 0
3 years ago
Let
Citrus2011 [14]

Answer:

hi or high

Step-by-step explanation:

so you right the world h and i and cobine them to make hi or high same thing

3 0
3 years ago
How can I solve this math equation?
alukav5142 [94]

Answer:

Graphing

Step-by-step explanation:

1) You can graph this equation by using y=mx+b. You can replace that equation with y=3x-1.

M=3

X=x

B=-1

On a graph you would down 1 since it's negative and make a point. Then you would put a 1 under the 3 to make it a fraction. 3/1. Then you would divide 1 by 3 (1 ÷ 3). Then you would go to the right 0.33 because it's positive, and the up 1. Then you would make a second point.

This would only give you one line which wouldn't give you an intersection.

6 0
3 years ago
Read 2 more answers
3/5 of a number decreased by one is 23. What is the number?
garri49 [273]
You can set up an equation based off of the information given:

x represents the unknown number

3/5x - 1 = 23

add 1 to both sides to isolate the 3/5x

3/5x = 24

divide both sides by 3/5 to solve for x

x = 120/3

120/3 can be simplified into 40

Final answer: x = 40
5 0
3 years ago
Other questions:
  • A circle has a radius of 10 inches. Find the approximate length of the arc intersected by a central angle of 2pi/3
    13·2 answers
  • Which statement explains the type of function that is represented by the equation Y equals X2 +9
    5·1 answer
  • Mandy and karissa swam laps in the pool to train for the upcoming swim meet. The ratio to the number of laps Mandy swam to the n
    5·1 answer
  • Use the following set of data: 78, 78, 83, 85, 89, 91, 95, 98 What is the range for the set of data? 78 87 20 98
    9·1 answer
  • You have two rectangular prisms (Prism A and Prism B). Prism A has the following dimensions: length x, width y, and height z. Pr
    12·1 answer
  • the perimeter of a geometric figure is the sum of its sides. if the perimeter of the following pentagon is 42 meters, find the l
    13·2 answers
  • write a problem involving addition subtraction multiplication or division of integers and include the answer
    14·1 answer
  • The bases on a softball field are square. What is the area of each base if one side is 15 inches? Do not write units.
    6·2 answers
  • Use the Distributive Property to expand 9(3 + x).
    14·2 answers
  • Solve for the value of x :-<br>4(3+x)+x=x+4​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!