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Fynjy0 [20]
3 years ago
12

What is perimeter of a rectangle with width 10 inches and length 13 inches

Mathematics
1 answer:
Komok [63]3 years ago
8 0
46 inches
(2x10 + 2x13 = 46)
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HELP ASAP !! easy question and i’ll give brainliest
tia_tia [17]

Answer:

x=38.5

Step-by-step explanation:

\sqrt{23^{2}- 18^{2}}   =\sqrt{205}

cos(x)=\frac{18^{2} +23^{2} -205}{2(18)(23)}

x=38.5(correct to the nearest tenth)

4 0
3 years ago
Read 2 more answers
What is the value of x? (5 points)
Svetlanka [38]
30 + 2x = 90
2x = 60
x = 30

Answer:
x = 30
7 0
2 years ago
Solve the system by substitution.<br> [-2.5x+y = 13.5<br> 12.25x - y=-12.25
IrinaK [193]

Answer:

x = 5/39 , y = 539/39

Step-by-step explanation:

Solve the following system:

{y - 2.5 x = 13.5

12.25 x - y = -12.25

In the first equation, look to solve for y:

{y - 2.5 x = 13.5

12.25 x - y = -12.25

y - 2.5 x = y - (5 x)/2 and 13.5 = 27/2:

y - (5 x)/2 = 27/2

Add (5 x)/2 to both sides:

{y = 1/2 (5 x + 27)

12.25 x - y = -12.25

Substitute y = 1/2 (5 x + 27) into the second equation:

{y = 1/2 (5 x + 27)

1/2 (-5 x - 27) + 12.25 x = -12.25

(-5 x - 27)/2 + 12.25 x = 12.25 x + (-(5 x)/2 - 27/2) = 9.75 x - 27/2:

{y = 1/2 (5 x + 27)

9.75 x - 27/2 = -12.25

In the second equation, look to solve for x:

{y = 1/2 (5 x + 27)

9.75 x - 27/2 = -12.25

9.75 x - 27/2 = (39 x)/4 - 27/2 and -12.25 = -49/4:

(39 x)/4 - 27/2 = -49/4

Add 27/2 to both sides:

{y = 1/2 (5 x + 27)

(39 x)/4 = 5/4

Multiply both sides by 4/39:

{y = 1/2 (5 x + 27)

x = 5/39

Substitute x = 5/39 into the first equation:

{y = 539/39

x = 5/39

Collect results in alphabetical order:

Answer: {x = 5/39 , y = 539/39

5 0
3 years ago
Emilia scored x points in a game . Sarah scored 3 less than 5 times as many points as Emilia . Together, Emilia and Sarah scored
fenix001 [56]

Answer:

x=6

Step-by-step explanation:

x + 5x - 3 = 39

6x - 3 = 39

6x = 36

x = 6

4 0
3 years ago
The longer leg of a right triangle is 17 cm longer than the length of the shorter leg x. The hypotenuse is 25 cm.
kicyunya [14]
The answer is 15 cm long
5 0
3 years ago
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