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sineoko [7]
3 years ago
9

Given that y = 18 + 3x² i) express x in terms of y

Mathematics
1 answer:
fgiga [73]3 years ago
6 0

Answer:

\sqrt{-6 + \frac{y}{3}} = x

Step-by-step explanation:

y = 18 + 3x²

- 18 - 18

__________

\frac{-18 + y}{3} = \frac{3x^2}{3} \\ \\ -6 + \frac{y}{3} = x^2 \\ \\ \sqrt{-6 + \frac{y}{3}} = x

I am joyous to assist you anytime.

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Really need help on this so please help as soon as you can thanks
Juli2301 [7.4K]

Answer:

Option A

Step-by-step explanation:

From the last triangle given in the picture,

x° = 45° + 85° [By the definition of exterior angle of a triangle]

x = 130°

Another way to get the value of x,

By triangle sum theorem,

45° + 85° + y° = 180°

y° = 180° - 130°

y = 50°

And (x° + y°) = 180° [linear pair of angles]

x + 50 = 180

x = 130°

Therefore, x = 130° because 180 - (45 + 85) = 50 and 180 - 50 = 130

Option A is the answer.

7 0
3 years ago
Audrey is practicing basketball. She makes a basket from the free throw line 8 out of 25 shots. which decimal shows the fraction
dem82 [27]
B.  If you divide 8 into 25, you come up with 3.125.  
7 0
3 years ago
Read 2 more answers
Draw a number line and show all numbers that are 2/3 of a unit to the left of 1/2
zubka84 [21]

Answer:

See below.

Step-by-step explanation:

Draw a number line and draw points corresponding to -1, 0, and 1.

Mark 6 equal divisions between -1 and 0. Mark 6 equal divisions between 0 and 1.

Now you have the units between 1 and 0 and between 0 and -1 divided into sixths.

Now look at the point that corresponds to 1/2. It is the middle one-sixth mark between 0 and 1. Start there. That is 3/6 which is the same as 1/2.

You need to go 2/3 of a units to the left of 1/2.

2/3 = 4/6, so starting at 1/2, go 4 one-sixth marks to the left.

Now you are 2/3 unit to the left of 1/2.

See the number line below.

                -1                              0                              1

<----+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+------>

Start with a mark on 1/2, S in bold below.

                -1                              0             1/2             1

<----+---+---+---+---+---+---+---+---+---+---+---S---+---+---+---+---+------>

Now go 2/3 unit to left. 2/3 = 4/6, so go 4 one-sixth divisions to the left.

The point labeled with a bold E is the result. It is -1/6

                -1                      -1/6   0             1/2             1

<----+---+---+---+---+---+---+---E---+---+---+---S---+---+---+---+---+------>

8 0
3 years ago
Crystal is paying the bill at a restaurant. Ignoring all taxes, the
Leona [35]

Answer: She will pay $64.90 in total.

Step-by-step explanation: The bill at the restaurant comes to $55 and Crystal wants to include an 18% tip.

So you will convert this into decimal form, which will be 0.18.

Now, you will multiply 55 by 0.18, giving you 9.9.

Add that to 55 and you will have your answer.

Have a great day!

8 0
3 years ago
103,727,495 in a word form
3241004551 [841]
103,727,495 in word form is: one hundred three million, seven hundred twenty-seven thousand, four hundred ninety-five.
3 0
3 years ago
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