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3 years ago

Help with number 13 please if someone can please

Mathematics

1 answer:

guapka [62]3 years ago

6 0

Answer: X=2 Y=-6

Step-by-step explanation:

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Solve for x someone help please. If possible please include steps

olga55 [171]

Answer:

Step-by-step explanation:

(x + 2) + (-2 + x) = 20

2x + 0 = 20

2x = 20

x = 20/2

x = 10

4 0

3 years ago

Read 2 more answers

What is the surface area of cone below Diameter AB=21 and distance from B to C =36

Vesnalui [34]

Answer:

1533.88261311522

Step-by-step explanation:

Let r be the radius of the (base/circle)

and L be the slant height of the cone

Formula ………………………………………………………………………………………………………

The surface area of a cone = the (curved/lateral) surface area + the base

$=\pi r^{2}\ \ \ +\ \ \ \pi Lr$

=========================================

$r=\frac{21}{2} =10.5$

L = BC = 36

$\text{surface area} =\pi \left( 10.5\right)^{2} +\pi \times 36\times \left( 10.5\right)$

$=346.360590058275 + 1187.52202305694$

$=1533.88261311522$

6 0

2 years ago

How the use a parentheses in an equation affect the answer

seraphim [82]

Parentheses affect how equations are done.

EX. 1+1*4
4+1=5

VS

(1+1)*4
2*4=8

5 0

3 years ago

2x − 5y = 16 3x + 2y = 5 can you also explain how you did it. Thanks :)

Reptile [31]

Answer:

x=3

y=-2

Step-by-step explanation:

2x - 5y = 16

3x + 2y = 5

Solve for x in the first equation.

2x - 5y = 16

2x = 16 + 5y

x = (16 + 5y)/2

x = 8 + 5/2y

Put x as 8 + 5/2y in the second equation and solve for y.

3(8+5/2y) + 2y = 5

24+15/2y + 2y = 5

24 + 19/2y = 5

19/2y = 5-24

19/2y = -19

y = -2

Put y as -2 in the first equation and solve for x.

2x - 5(-2) = 16

2x +10 = 16

2x = 16-10

2x = 6

x = 3

6 0

4 years ago

Read 2 more answers

The of choice are ways epress 0.4 which is not

Ann [662]

Answer:

NO IT IS 4

Step-by-step explanation:

6 0

4 years ago