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nasty-shy [4]
3 years ago
15

Solve.

Mathematics
2 answers:
aivan3 [116]3 years ago
8 0
She spent 1.97 on each beach ball
pishuonlain [190]3 years ago
4 0

Number of beach balls Polly bought =12

Total cost of 12 beach balls = $23.64

Here in order to find cost of one beach ball, we will apply unitary method.

So to find cost of one beach ball we will divide cost of 12 beach balls by 12

So cost of one beach ball = 23.64 /12 = 1.97.

So cost of one beach ball is $1.97

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Hurry 50 points for correct answer
Ad libitum [116K]

Answer: <em>"7 is a solution to the original equation. The value –1 is an extraneous solution."</em>

Step-by-step explanation:

The equation x=\sqrt{6x+7} can be solved by squaring both sides:

x^2 = 6x + 7\\\\x^2 - 6x - 7 = 0\\\\(x-7)(x+1) = 0

We can see that -1 and 7 are solutions, but make sure they are not extraneous by substituting them in the original equation:

1 = \sqrt{-1}\\ 7 = \sqrt{49}

The square root of 49 equals 7, but the square root of -1 is an imaginary number.

The correct choice is <em>"7 is a solution to the original equation. The value –1 is an extraneous solution."</em>

4 0
3 years ago
Help me with this please!
ruslelena [56]
Area of the quarter sector 
Area of the entire circle = pi * r^2
Area of the quarter circle = pi r^2 / 4
r = 9
Area of the quarter circle = pi 9^2 / 4
Area of the quarter circle = pi 81/4 = 20.25 pi

Area of the triangle
Area pf the triangle = 1/2 b*h
b = h = r
r = 9
Area of the triangle = 1/2 9 * 9 
Area of teh triangle = 1/2 81
Area of the triangle = 40.5

Area of the shaded area
The shaded area = Area of the 1/4 circle - area of the triangle
The shaded area = (20.24 pi - 40.5)ft^2

 A <<<<<< Answer.
6 0
3 years ago
Picture and question found below.
Leno4ka [110]

Answer: 6 is not a solution because x/3 - 4 is less than -6, meaning it would be -7 or less

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Daniel bought a bicycle for $80 and a helmet for $20. The sales tax was 5%. How much did Daniel pay for the two items, including
Nezavi [6.7K]

Given:

Daniel bought a bicycle for $80 and a helmet for $20.

Sales tax = 5%

To find:

The total amount of both items including tax.

Solution:

Price of bicycle (excluding tax)= \$80

Price of helmet(excluding tax) = \$20

Price of both items = \$80 + \$20

                                =\$100

Now, the sales tax is 5%. So,

Price of both items (including tax) = \$100+\dfrac{5}{100}(\$100)

                                                        = \$100+\$5

                                                        = \$105

Therefore, the Daniel pays $105 for the two items, including tax.

5 0
3 years ago
4 1/4 - 5/6 giving ur answer as a Mixed Number
fomenos

Answer:

3 5/12

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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