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3 years ago

2(x+8)=2x-8 true or false

Mathematics

1 answer:

Serhud [2]3 years ago

5 0

If you mean is it equally or not
The answer will be false
Because 2 multiply by 8 equal 16
2x+16 not equal to 2x-8

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Find the VOLUME of this composite solid.

Black_prince [1.1K]

Answer:

(294π +448) cm³ ≈ 1371.6 cm³

Step-by-step explanation:

The half-cylinder at the right end has a radius of 7 cm, as does the one on top. Together, the total length of these half-cylinders is 8 cm + 4cm = 12 cm. That is equivalent in volume to a whole cylinder of radius 7 cm that is 6 cm long.

The cylinder volume is ...

V = πr²h = π(7 cm)²(6 cm) = 294π cm³

The cuboid underlying the top half-cylinder has dimensions 4 cm by 8 cm by 14 cm (twice the radius). So, its volume is ...

V = LWH = (4 cm)(8 cm)(14 cm) = 448 cm³

Then the total volume of the composite figure is ...

(294π +448) cm³ ≈ 1371.6 cm³

8 0

3 years ago

Which ratio is equivalent to 4:5?

maw [93]

Answer:

8:10 and 12: 15

Step-by-step explanation:

we have to multiply

5 0

3 years ago

Solve this problem 5x+6y=60

12345 [234]

Answer:

if the outputs can be whole number then,

(x,y) = (0, 10) or (6,5) or (12,0)

if the outputs can be natural number then,

(x,y) = (6,5)

6 0

3 years ago

Read 2 more answers

Does anyone know this and can help please

adelina 88 [10]

Answer:

$\frac{y^7z^3}{x}$

Step-by-step explanation:

When variables have negative exponents, switch their positions.

$\frac{x^{-1}y^7}{z^{-3}}=\frac{y^7z^3}{x}$

5 0

3 years ago

Simplify 3[2^3 + (4-2)^3 - (6-2)^2]

Ivahew [28]

Answer:

$\boxed{0}$

Step-by-step explanation:

$3(2^3 + (4 - 2)^3 - (6 - 2)^2)$

$= 3(2^3 + 2^3 - 4^2)$

$= 3(2.2^3 - (2^2)^2)$

$= 3(2^4 - 2^4)$

$= 3(0)$

$= 0$

6 0

3 years ago