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Cloud [144]
3 years ago
14

Which of the following inequalities is not true?

Mathematics
1 answer:
Lemur [1.5K]3 years ago
4 0

Answer:

| - 9|  =  |9|

This is because modulus number will be always positive

Hope this is correct and helpful

HAVE A GOOD DAY!

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PLEASE HELP ME WITH IT.
scoundrel [369]

OK.  I did it.  Now let's see if I can go through it without
getting too complicated.

I think the key to the whole thing is this fact:

     A radius drawn perpendicular to a chord bisects the chord.

That tells us several things:

-- OM bisects AB. 
   'M' is the midpoint of AB.
   AM is half of AB.

-- ON bisects AC.
    'N' is the midpoint of AC.
   AN is half of AC.

--  Since AC is half of AB,
     AN is half of AM.
     a = b/2 

Now look at the right triangle inside the rectangle.
'r' is the hypotenuse, so

                                            a² + b² = r²

But  a = b/2, so             (b/2)² + b² = r²

(b/2)² = b²/4                   b²/4   + b² = r²

Multiply each side by 4:     b² + 4b² = 4r²
                                       -  -  -  -  -  -  -  -  -  -  -
                                            0  + 5b² = 4r²  
Repeat the
original equation:                a² +  b² =  r²

Subtract the last
two equations:                  -a² + 4b² = 3r² 

Add  a²  to each side:              4b²  =  a² + 3r² .    <=== ! ! !
 
7 0
3 years ago
If f(x) = 2x2 + 1, what is f(x) when x = 3? a.1 b.7 c.13 d.19
prohojiy [21]

<u>Answer:</u>

The value of f(x) = 2x^2 + 1 when x=3 is 19, hence the correct option is ‘d’.

<u>Solution:</u>

A two degree polynomial equation is given in the question.

The equation is:

F(x)=2 x^{2}+1

We need <em>to find the value of f(x) when the value of x is 3. </em>

To solve a question like this we have to substitute the given value of x in the given equation and then simplify it.

Now let's substitute the value of x in the given equation.

F(x)=2(3)^{2}+1

First we square the number 3 and then multiply it with 2 and then add 1.

This is done because of the BODMAS rule, in which multiplication is given higher preference as compared to addition.

On solving the equation we get,

F(x)=2×9+1

F(x)=18+1

F(x)=19.

Therefore the value of f(x) when x=3 is 19.

Hence the correct option is ‘d’.

4 0
3 years ago
Read 2 more answers
Brian purchased a pizza and shared 34 of the pizza with his friends. Each friend received 1/4 of the pizza. With how many friend
Veseljchak [2.6K]

Answer:

3 friends ( unless u mean 3/4 instead of 34 then its 2 friends)

Step-by-step explanation:

8 0
3 years ago
Two similar cylinders have surface areas of 24pi cm^2 and 54pi cm^2. The volume of the smaller cylinder is 16pi cm^2. What is th
ankoles [38]

Answer:

Step-by-step explanation:

i need this too

6 0
3 years ago
Tracy bought 6 bags of m&amp;ms in each bag weighs 5/8 of a pound how many pounds of m&amp;ms did tracy buy?​
kozerog [31]

Answer:

Exact Form:

\frac{15}{4}

Decimal Form:

3.75

Mixed Number Form:

3  \frac{3}{4}

Step-by-step explanation:

Multiply \frac{5}{8} by 6, and it equals 3 \frac{3}{4} pound of m&ms

Hope this helps :)

8 0
3 years ago
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