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seraphim [82]
3 years ago
14

3x to the second power -8 = 40? what is x?

Mathematics
1 answer:
BARSIC [14]3 years ago
8 0
3x^2 - 8= 40
add 8 to both sides
3x^2= 48
divide both sides by 3
x^2= 16
take the square root of x and 16
x= 4

ANSWER: x=4

Hope this helps! :)
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What does x equal???????? please help
Sholpan [36]
<h3>Answer: x = 61</h3>

=============================================

Explanation:

The angle x and the 29 degree angle combine to form a 90 degree angle. This is because the square maker on the left has that angle at 90 degrees, and all of the angles combine to form 180. So 180-90 = 90 is the left over amount.

Add up x and 29 to get 90

x+29 = 90

Solve for x by subtracting 29 from both sides

x+29-29 = 90-29

x+0 = 61

x = 61

--------------

An alternative is to solve the equation below for x

x+29+90 = 180 ... see note below

x+119 = 180

x+119-119 = 180-119 ... subtract 119 from both sides

x = 61

we get the same answer

note: this equation turns into x+29 = 90 if you subtracted 90 from both sides

7 0
3 years ago
Latoya bought an item for $66. Before that, she had $402.44. How much money does Latoya have now.
andre [41]

Answer:

$336.44

Step-by-step explanation:

$402.44 - $66 = $336.44

8 0
2 years ago
If c= the number of cars in a parking lot, which algebraic expression
DIA [1.3K]

Answer:

Option C) c+9 is correct

The sum of the number of cars and 9=c+9 is correct algebraic expression representation for given phrase

Step-by-step explanation:

Given that c=the number of cars in a parking lot.

The phrase given is "the sum of the number of cars and 9"

To find the algebraic expression which represents the given phrase :

The algebraic expression to the given phrase is c+9

That is option C) c+9 is correct

The sum of the number of cars and 9=c+9 is correct algebraic expression representation for given phrase

5 0
3 years ago
Lisa has t toy cars. Gordon has 19 times as many toy cars as Lisa. Choose the expression that shows how many toy cars Gordon has
HACTEHA [7]

Answer:

19 times t = how many toy cars Gordon has.

                             OR

19t= how many toy cars Gordon has

8 0
3 years ago
How many times does 1/3 go into 1/18?
Orlov [11]
6 is the answer 18 divided by 3 equals to 6 so that’s the answer
4 0
3 years ago
Read 2 more answers
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