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balu736 [363]
3 years ago
7

Im having a hard time on this question and I hope you can help.

Mathematics
2 answers:
Irina-Kira [14]3 years ago
5 0

Answer:

your answer would be x≠ 0


Masja [62]3 years ago
3 0

The answer would be x ≠ 0

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

First start with the left side, doing distributive property

So... -2(x) = -2x and -2(5) = -10 Therefore on the left side you now have -2x -10

Next do the same on the right side

-2(x) = - 2x and -2(-2) = 4 so you have -2x + 4 + 5 and you add 4 and 5, leaving you with -2x + 9

Now that you have simplified both sides the problem now looks like this:

-2x - 10 = -2x + 9

Because you have equal terms on both sides (-2) those cancel out so you have -10 = 9

Just from looking at this we know that the statement is false because -1o does not equal 9

*The symbol, "≠" means not equal to"

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A cylinder with a radius of 12cm and a height of 20cm has the same volume as a cone with a radius of 8cm. What is the height of
ivanzaharov [21]

Answer: 135cm

Step-by-step explanation

Volume of a cylinder = πr²h

Volume of a cone. = 1/3πr²h

The two shapes are both solid shapes.

Since the have same volume, we can then equate the two together and solve for the height of the cone.

Now make H the height and R the radius of the cylinder and h the height and r the radius of the cylinder.

Now equating the two

πR²H = 1/3πr²h

Now substitute for the values now

Multiply through by 3

3πR²H = πr²h

But π is common so it could be obliterated from the equation

3R²H = r²h

3 x 12² x 20 = 8² x h

3 x 144 x 20 = 64 x h

60 x 144 = 64h

8640. = 64h

Therefore

h = 8640/64

= 135cm

8 0
3 years ago
Please help me!!!!!!!
Helen [10]
First we will find the value of x.

To find the value of x we can add angle Q and angle O and set them equal to 180 and solve for x.

We will be setting them equal to 180 since the opposite angles of an inscribed quadrilateral are supplementary.

angle Q + angle O = 180
6x - 5 + x + 17 = 180
7x +12 = 180
7x = 168
x = 24

Now we can use 24 for x and find the value of angle QRO

angle QRO = 2x + 19
angle QRO = 2(24) + 19
angle QRO = 48 + 19
angle QRO = 67

So the answer choice B is the right answer.

Hope this helps :)<span />
6 0
3 years ago
C)<br> What is 15 1/2% to a fraction
Nata [24]

Answer:

31/2

Step-by-step explanation:

6 0
3 years ago
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What is an appropriate scale to graph a credit of $35 and a debit of $40
nekit [7.7K]
35 would be positive while 40 would be negative
8 0
3 years ago
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A circular mirror is surrounded by a metal frame. The radius of the mirror is 2x. The side length of the metal frame is 12x. Wha
meriva

Answer:

Area\ of\ th\e metal\ frame = 65.5x^{2}\ (unit)^{2}

Step-by-step explanation:

Assuming that the metal frame is a square metal frame because the length of the side of the metal frame is given.

Given:

Radius of the mirror = 2x unit

Side length of the square metal frame = 12x unit

We need to find the area of the metal frame.

Solution:

First we find the area of the circular mirror, using area formula of the circle.

A_{c} = \pi r^{2}

Where, r = Radius of the object.

Substitute r = 2x in above equation.

A_{c} = \pi (5x)^{2}

A_{c} = \pi (25x^{2})

A_{c} = 25\pi x^{2}\ (unit)^{2}

Now, we find the area the square, using area formula of the square.

A_{S} = (Side\ length)^{2}

A_{S} = (12x)^{2}

A_{S} = 144x^{2}\ (unit)^2}

So, the area of the square metal frame is given as

A_{f}=A_{s}-A_{c}

A_{f}=144x^{2}-25\pi x^{2}

A_{f}=(144-25\pi) x^{2}

A_{f}=(144-25\times 3.14) x^{2}

A_{f}=(144-78.5) x^{2}

A_{f}=65.5 x^{2}\ (unit)^{2}

Therefore, the area of the metal frame is 65.5x^{2}\ (unit)^{2}.

5 0
3 years ago
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