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3 years ago

Just tell me the answer and how you got it , thank you

Mathematics

1 answer:

leva [86]3 years ago

7 0

(2x^2 + 4x + 6) - (-3x - 5x^2 + 4)

The negative sign separating the expressions is just multiplying the rightmost expression by -1.

(2x^2 + 4x + 6) + (3x + 5x^2 - 4)

Now, let's add together terms that share the same variable.

2x^2 + 5x^2 = 7x^2

4x + 3x = 7x

6 + (-4) = 2

Let's combine each of these terms into one expression.

7x^2 + 7x + 2 is the final answer.

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10000000000+70000000000000000-:333333300 <br><br><br><br> Answer: 10210000021

hodyreva [135]

<h2>Answer:</h2><h2>good to know</h2><h2 /><h2>thx :)</h2>

4 0

3 years ago

Work out the volume of the shape

pashok25 [27]

Answer:

$\large\boxed{V=\dfrac{1,421\pi}{3}\ cm^3}$

Step-by-step explanation:

We have the cone and the half-sphere.

The formula of a volume of a cone:

$V_c=\dfrac{1}{3}\pi r^2H$

r - radius

H - height

We have r = 7cm and H = (22-7)cm=15cm. Substitute:

$V_c=\dfrac{1}{3}\pi(7^2)(15)=\dfrac{1}{3}\pi(49)(15)=\dfrac{735\pi}{3}\ cm^3$

The formula of a volume of a sphere:

$V_s=\dfrac{4}{3}\pi R^3$

R - radius

Therefore the formula of a volume of a half-sphere:

$V_{hs}=\dfrac{1}{2}\cdot\dfrac{4}{3}\pi R^3=\dfrac{2}{3}\pi R^3$

We have R = 7cm. Substitute:

$V_{hs}=\dfrac{2}{3}\pi(7^3)=\dfrac{2}{3}\pi(343)=\dfrac{686\pi}{3}\ cm^3$

The volume of the given shape:

$V=V_c+V_{hs}$

Substitute:

$V=\dfrac{735\pi}{3}+\dfrac{686\pi}{3}=\dfrac{1,421\pi}{3}\ cm^3$

7 0

3 years ago

Which table does not represent a function?

Mrrafil [7]

Answer:

Step-by-step explanation:

To be a function every input must have exactly one output. There are two input values with 2, therefore this makes it not a function.

3 0

3 years ago

Passes through (8,7) and (0,0)

quester [9]

Answer:

6,3

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Suppose a Hispanic Heritage festival is held in an area measuring 2,494 square yards. If the length of the festival is 58 yards,

Kaylis [27]

Answer: 43 yards.

Step-by-step explanation:

Let the shape of the area occupied for festival be rectangle.

and area of rectangle = length x width

Given: Area of the festival= 2,494 square yards.

Length of the festival= 58 yards

Then width = (Area )÷ (length)

= (2494)÷58 yards

= 43 yards

hence, the width of the festival = 43 yards.

4 0

3 years ago

Just tell me the answer and how you got it , thank you​

Just tell me the answer and how you got it , thank you