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eimsori [14]
1 year ago
10

Solve the proportion equation. X 10 45 9 = X = (Type a whole number or a decimal.) ​

Mathematics
2 answers:
Ann [662]1 year ago
8 0

Answer: x=7.5

Step-by-step explanation:

pochemuha1 year ago
3 0

Answer:

x=7.5

Step-by-step explanation:

I was gonna say the same thing but the other guy answered too quickly.

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Determine the area and perimeter​
frosja888 [35]

Answer:

Area is the total surface covered by the shape and perimeter is the total length of the shape.

4 0
3 years ago
2/x + 3/y = 13 ; 5/x - 4/y = -2​
Tomtit [17]

Given that

(2/x)+(3/y) = 13--------(1)

(5/x)-(4/y) = -2 -------(2)

Put 1/x = a and 1/y = b then

2a + 3b = 13 ----------(3)

On multiplying with 5 then

10a +15 b = 65 -------(4)

and

5a -4b= -2 ----------(5)

On multiplying with 2 then

10 a - 8b = -4 -------(6)

On Subtracting (6) from (4) then

10a + 15b = 65

10a - 8b = -4

(-)

_____________

0 + 23 b = 69

______________

⇛ 23b = 69

⇛ b = 69/23

⇛ b =3

On Substituting the value of b in (5)

5a -4b= -2

⇛ 5a -4(3) = -2

⇛ 5a -12 = -2

⇛ 5a = -2+12

⇛ 5a = 10

⇛ a = 10/5

⇛ a = 2

Now we have

a = 2

⇛1/x = 2

⇛ x = 1/2

and

b = 3

⇛1/y = 3

⇛ y = 1/3

<u>Answer :-</u>The solution for the given problem is (1/2,1/3)

<u>Check</u>: If x = 1/2 and y = 1/3 then

LHS = (2/x)+(3/y)

= 2/(1/2)+3/(1/3)

= (2×2)+(3×3)

= 4+9

= 13

= RHS

LHS=RHS is true

and

LHS=(5/x)-(4/y)

⇛ 5/(1/2)- 4/(1/3)

⇛(5×2)-(4×3)

⇛ 10-12

⇛ -2

⇛RHS

LHS = RHS is true

5 0
2 years ago
Find the difference: -2/5-(-4/5)
CaHeK987 [17]

Answer:

2/5

Step-by-step explanation:

-2/5-(-4/5) (remove the parentheses)

-2/5+4/5 (calculate)

solution: 2/5

hope this helps!

5 0
3 years ago
Solve this polynomial expression please.
Sedbober [7]
-9x^3 +54x^2 -30x +12
5 0
2 years ago
Can I get help on this please
ryzh [129]

Answer:

D.

Step-by-step explanation:

<FIL and <AIN are Vertical angles.

Vertical angles are always congruent.

Congruent means the same or equal.

8 0
3 years ago
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