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Tanzania [10]
3 years ago
7

Solve the equation

= 5" alt="\sqrt{x+3} +4 = 5" align="absmiddle" class="latex-formula"> Show each step of your solution process.
Mathematics
2 answers:
Oksana_A [137]3 years ago
6 0

Answer:

x = -2 & -4

Step-by-step explanation:

√(x + 3) + 4 = 5

√(x + 3) = 5 - 4

√(x + 3) = 1

[√(x + 3)]² = (1)²

x² + 9 + 6x = 1

x² + 9 - 1 + 6x = 0

x² + 8 + 6x = 0

x² + 6x + 8 = 0

x² + (4x + 2x) + 8 = 0

x² + 4x + 2x + 8 = 0

x(x + 4) + 2(x + 4) = 0

(x + 4)(x + 2) = 0

x = -2 & -4

Hence,

Value of x is -2 & -4

sergij07 [2.7K]3 years ago
3 0

Answer:

-2

Step-by-step explanation:

We start off by subtracting 4 on both sides giving us:

sqrt(x+3) = 5-4 = 1

So,

sqrt(x+3) = 1, and squaring both sides we get x+3 = 1

Therefore,

x = -2

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Plug in the X and you will find the Y
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I need a legit answer with just a little explanation please it would mean alot to me
SSSSS [86.1K]

Answer: C.

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The Correct answer is ¥
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3 years ago
15 more than the quotient of 24 and a number x
iris [78.8K]

Answer:

24x + 15

Step-by-step explanation:

You multiply 24 and x together, then add 15 to the sum.

4 0
2 years ago
13) 3 bags of Brand X dog food and 4 bags of Brand Y dog food costs $18,
GuDViN [60]

Answer:

the cost of brand x dog food is $2

Step-by-step explanation:

Let brand X dog food be represented as A

Let Brand Y dog food be represented as B

3 bags of Brand X dog food and 4 bags of Brand Y dog food costs $18,

3A+4B=18

4 bags of Brand X dog food and 3 bags of Brand Y dog food costs

$17.

4A+3B= 17

  • 3A+4B=18
  • 4A+3B= 17

Using Elimination method

Multiply

  • 3A+4B=18 by coefficient of B in equ ii (3)  = 9A+12B=54
  • 4A+3B= 17 by coefficient of B in equ i (4)  = 16A+12B=68
  • subtract equation i from equation ii, since sign is the same in both equations
  • 9A+12B-(16A+12B)= 54-68
  • open bracket
  • 9A+12B-16A-12B= 54-68= -14
  • 9A-16A+12B-12B= -14
  • -7A= -14
  • divide both sides by -7

A = -14/-7= 2

Since the brand X dog food is represented as A

the cost of brand x dog food is $2

4 0
4 years ago
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