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NeX [460]
3 years ago
9

GIVING BRAINLIEST FOR BEST ANSWER!

Mathematics
2 answers:
Nadya [2.5K]3 years ago
8 0

Answer: the answer is B

Sav [38]3 years ago
6 0

Answer:

The answer is B

Step-by-step explanation:

Because 3 1/5 as a decimal is 3.2

So 3.2 x 7 = 22.4

converted to a fraction is 11 2/5

and 22 2/5 simplified is 11 2/5

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gizmo_the_mogwai [7]
120° is the correct answer<span />
8 0
4 years ago
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Which of the following statements are true about the equation below?
emmasim [6.3K]

Answer:

Option 1, 2, 5 are the correct answer.

Explanation:

 We have the quadratic equation, x^2-6x+2=0

 First derivative of the equation is given by 2x - 6 = 0

               So x = 3

At x = 3 the value of quadratic equation is extreme, corresponding y is given by 3^2-6*3+2=11-18=-7, So extreme value is at (3,-7)

Second derivative of the quadratic equation is given by 2 ( positive value)

 Second derivative is positive so graph of equation has a minimum value.

Now root of the equation x^2-6x+2=0 is given by

            \frac{6+\sqrt{(-6)^2-4*1*2}} {2} =3+\sqrt{7}

                                             or

            \frac{6-\sqrt{(-6)^2-4*1*2}} {2} =3-\sqrt{7}

Option 1, 2, 5 are the correct answer.              

             

7 0
3 years ago
Read 2 more answers
A store sold a case of candles for $17.85 that had been marked up 10%. what was the original price?
Aleonysh [2.5K]

Step-by-step explanation:

The original price was $16.23

Explanation:

We can rewrite this problem as:

110% of what is $17.85.

"Percent" or "%" means "out of 100" or "per 100", Therefore 110% can be written as

110 x/100

.

When dealing with percents the word "of" means "times" or "to multiply".

Finally, lets call the number we are looking for "n".

Putting this altogether we can write this equation and solve for

n

while keeping the equation balanced:

<em>110/100 × n = $17.85</em>

<em>110/100 × n = $17.85 </em>

<em>110/100 × n = $17.85 100/110 × 110/100 × n = 100/110 × $17.85</em>

<em>110/100 × n = $17.85 100/110 × 110/100 × n = 100/110 × $17.85 </em>

<em>1</em><em>0</em><em>0</em><em>/</em><em>1</em><em>1</em><em>0</em><em> </em><em><</em><em>¬</em><em> </em><em>cross</em><em> out</em><em> </em><em>× </em><em>1</em><em>1</em><em>0</em><em>/</em><em>1</em><em>0</em><em>0</em><em> </em><em><</em><em>¬</em><em> </em><em>cross</em><em> out</em><em> </em><em> </em><em>× n = $ 1785/110</em>

<em>× n = $ 1785/110 </em>

n = $16.23n rounded to the nearest penny.

7 0
3 years ago
The length of a sandbox is 8 feet more than its width. The area is 20 square feet. Find the length and width of the sandbox. Sol
GarryVolchara [31]
Let the width be x.
width = x
length = x + 8

The area is 20 ft²
x(x + 8) = 20
x² + 8x = 20
x² + 8x - 20 = 0
(x + 10) (x - 2) = 0
x = -10 (rejected) or x = 2

Width = x = 2 ft
Length = x + 8 = 2 + 8 = 10 ft

Answer: The width is 2 ft and the length is 10ft.


3 0
4 years ago
The measure of an angle is 2.8.what is the measure of its complementary angle
german

Answer:

87.2º

Step-by-step explanation:

Complimentary angles total 90º

c + 2.8 = 90

c = 90 - 2.8

c = 87.2º

3 0
3 years ago
Read 2 more answers
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