30 POINTS! x + 1 = 2 ÷ x + 1

Mathematics

1 answer:

Semmy [17]3 years ago

3 0

For this case we have the following equation:

$x + 1 = \frac {2} {x + 1}$

We must find the value of $x + 1$ :

Multiplying both sides of the equation by $x + 1:$

$(x + 1) ^ 2 = 2$

Applying square root on both sides of the equation to eliminate the exponent:

$x + 1 = \sqrt {2}$

Answer:

Option B

You might be interested in

Please answer someone!!!

Step2247 [10]

Answer:

True

Step-by-step explanation:

$\sqrt{(xy)^3}$ =
$((xy)^{1/2})^3$ =
$(xy)^{{1/2}*3}$ =
$(xy)^{3/2}$

The answer is TRUE

8 0

3 years ago

A coffee mixture has beans that sell for $0.20 a pound and beans that sell for $0.68. If 120 pounds of beans create a mixture wo

atroni [7]

Let x be the number of pounds of the $1.35 beans. The cost of those beans is $1.35 * x, or 1.35x.
Let y be the number of pounds of the $1.05 beans. The cost of those beans is $1.05 * y, or 1.05y. 
We know that 120 pounds of the mix sells for $1.15/pound, for a total of 120 * 1.15 = $138. 

x + y = 120 
1.35(x) + (1.05)y = 138 

We can rewrite the first as 
x = -y + 120 

Now we can substitute (-y + 120) in for (x) in the second equation, because we just proved they're equal. 

1.35(x) + 1.05(y) = 138 
1.35(-y + 120) + 1.05y = 138 
-1.35y + 162 + 1.05y = 138 
-0.3y + 162 = 138 
-0.3y = -24 
y = 80 

And since x + y = 120, that means x = 40. 

Check: 
40 pounds of x at $1.35 costs 40 * 1.35, or $54. 
80 pounds of y at $1.05 costs 80 * 1.05, or $84. 
Do those add up to our target total, according to the question, of 120 * 1.15 = $138?

3 0

3 years ago

Please help asap!!!!!!!!!!!!!!

sasho [114]

Answer:

Measure with a ruler. Ok

6 0

3 years ago

Elisa won 40 lollipops playing basketball at the school fair. She gave 2 to every student in her math class. she has at least 7

Cloud [144]

40/2=20 half is as many their is if she has lest of seven round to the highest num because they are all even numbers

4 0