Consider the following statement:

8⋅3+2⋅6
8

3
+
2

6
______60÷5⋅3
60
÷
5

3
.

Which operator can be inserted to make the statement true?

(1 point)
Responses

=
=
equals



does not equal

>
>
greater than

<

11 answers

To determine which operator can be inserted to make the statement true, we first need to compute both sides of the equation.

Left side: \[ 8 \cdot 3 + 2 \cdot 6 \]

  • Calculating \( 8 \cdot 3 = 24 \)
  • Calculating \( 2 \cdot 6 = 12 \)
  • Adding those together: \( 24 + 12 = 36 \)

So, the left side evaluates to \( 36 \).

Right side: \[ 60 \div 5 \cdot 3 \]

  • First calculating \( 60 \div 5 = 12 \)
  • Then calculating \( 12 \cdot 3 = 36 \)

So, the right side evaluates to \( 36 \).

Now we can see that both sides are equal: \[ 36 = 36 \]

Therefore, the correct operator to insert is: \[ \text{=} \]

The statement can be made true by inserting the equals sign.

Which of the following values of x makes the equation 2x−−√+13=27
2
𝑥
+
13
=
27
true?(1 point)
Responses

16
16

49
49

25
25

9

To solve the equation \( \sqrt{2x} + 13 = 27 \), we will start by isolating the square root:

  1. Subtract 13 from both sides: \[ \sqrt{2x} = 27 - 13 \] \[ \sqrt{2x} = 14 \]

  2. Next, square both sides to eliminate the square root: \[ 2x = 14^2 \] \[ 2x = 196 \]

  3. Divide both sides by 2 to solve for \( x \): \[ x = \frac{196}{2} \] \[ x = 98 \]

Now, let's check which of the provided options gives a true statement when plugged back into the original equation:

  • For \( x = 16 \): \[ \sqrt{2 \cdot 16} + 13 = \sqrt{32} + 13 \approx 5.66 + 13 = 18.66 \quad \text{(not equal to 27)} \]

  • For \( x = 49 \): \[ \sqrt{2 \cdot 49} + 13 = \sqrt{98} + 13 \approx 9.898 + 13 = 22.898 \quad \text{(not equal to 27)} \]

  • For \( x = 25 \): \[ \sqrt{2 \cdot 25} + 13 = \sqrt{50} + 13 \approx 7.071 + 13 = 20.071 \quad \text{(not equal to 27)} \]

  • For \( x = 9 \): \[ \sqrt{2 \cdot 9} + 13 = \sqrt{18} + 13 \approx 4.242 + 13 = 17.242 \quad \text{(not equal to 27)} \]

None of the provided values satisfy the equation. Based on my calculations, the true value that satisfies the equation \( \sqrt{2x} + 13 = 27 \) is \( x = 98 \), which is not listed among the options.

Which option contains the solution set for the value of k in the equation 7+2k2=25
7
+
2
𝑘
2
=
25
?(1 point)
Responses

{−3,3}
{

3
,
3
}
left brace negative 3 comma 3 right brace



empty set

{3}
{
3
}
left brace 3 right brace

{−9,9}

To solve the equation \( 7 + 2k^2 = 25 \), we can follow these steps:

  1. Subtract 7 from both sides: \[ 2k^2 = 25 - 7 \] \[ 2k^2 = 18 \]

  2. Divide both sides by 2: \[ k^2 = \frac{18}{2} \] \[ k^2 = 9 \]

  3. Take the square root of both sides: \[ k = \pm \sqrt{9} \] \[ k = \pm 3 \]

So, the solutions for \( k \) are \( k = 3 \) and \( k = -3 \).

The solution set is: \[ { -3, 3 } \]

Hence, the correct option is: \[ { -3, 3 } \]

Which option is the set that expresses the solution to the inequality k+1<−3
𝑘
+
1
<

3
?(1 point)
Responses

{k:k>−4}
{
𝑘
:
𝑘
>

4
}
left brace k colon k greater than negative 4 right brace

{k:k<−4}
{
𝑘
:
𝑘
<

4
}
left brace k colon k less than negative 4 right brace

{k:k>4}
{
𝑘
:
𝑘
>
4
}
left brace k colon k greater than 4 right brace

{k:k<4}

To solve the inequality \( k + 1 < -3 \), we can follow these steps:

  1. Subtract 1 from both sides: \[ k < -3 - 1 \] \[ k < -4 \]

The solution to the inequality is \( k < -4 \).

Thus, the correct option that expresses this solution set is: \[ { k : k < -4 } \]

How many solutions will the equation 4h+6=14−12(16−8h)
4

+
6
=
14

1
2
(
16

8

)
have?(1 point)
Responses

no solution
no solution

infinite/many solutions
infinite/many solutions

two solutions
two solutions

one solution

To determine how many solutions the equation \( 4h + 6 = 14 - 12(16 - 8h) \) has, we can start by simplifying both sides of the equation.

  1. Begin with the original equation: \[ 4h + 6 = 14 - 12(16 - 8h) \]

  2. Distribute \(-12\) on the right side: \[ 4h + 6 = 14 - 192 + 96h \] \[ 4h + 6 = -178 + 96h \]

  3. Rearrange the equation to collect all terms involving \(h\) on one side and constant terms on the other side: \[ 4h - 96h = -178 - 6 \] \[ -92h = -184 \]

  4. Divide both sides by \(-92\): \[ h = \frac{-184}{-92} = 2 \]

Since we obtained a specific numeric value for \(h\), there is exactly one solution to the equation.

Thus, the correct response is: \[ \text{one solution} \]

wrong

Let's carefully re-evaluate the equation \(4h + 6 = 14 - 12(16 - 8h)\) step by step.

  1. Start with the original equation: \[ 4h + 6 = 14 - 12(16 - 8h) \]

  2. Distribute the \(-12\) on the right side: \[ 4h + 6 = 14 - 192 + 96h \]

    This simplifies to: \[ 4h + 6 = -178 + 96h \]

  3. Rearranging the equation to isolate \(h\): \[ 4h - 96h = -178 - 6 \] \[ -92h = -184 \]

  4. Divide both sides by \(-92\): \[ h = \frac{-184}{-92} = 2 \]

Now let’s ensure there are no mistakes during the simplification:

Check the Steps:

  • Recheck the distribution:
    • \( -12(16) = -192 \)
    • \( -12(-8h) = +96h \)

The right-hand side indeed simplifies to \( -178 + 96h \).

  • Rearranging gives you:
    • \( 4h - 96h = -178 - 6 \)
    • Leads to \(-92h = -184\), which confirms \( h = 2 \).

Conclusion:

Thus, the equation has exactly one solution \(h = 2\).

If you believe my answer is still incorrect, please provide any specific detail or clarification on the method or concept you would like me to review.