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diamong [38]
4 years ago
13

Type the correct answer in each box. The length of a rectangle is 3 inches more than its width. The perimeter of the rectangle i

s 34 inches. The length of the rectangle is inches, and its width is inches.
Mathematics
2 answers:
goblinko [34]4 years ago
7 0

Answer: Width= 7 in.

               Length= 10 in.

Step-by-step explanation:

l=w+3

The perimeter of the rectangle is 34 inches.

2(w+l)=34

substitute

2(w+w+3)=34

2(2w+3)=34

distributive property a(b+c)=ab+ac

2\cdot 2w+2\cdot 3=34

4w+6=34

4w+6-6=34-6

4w=28

divide 4 on both sides

w=7

Width is 7 inches

substitute w=7 in equation l=w+3

l=7+3

l=10

Length is 10 inches

Mazyrski [523]4 years ago
4 0

Answer: (Width x = 7) (Length 10)

Step-by-step explanation:

(x+3) + = 34/2

2x + 3 = 17

2x = 14

x = 7 -----------Width

10 ---------------Length

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Calcula el ancho de un terreno rectangular si el largo mide 20 metros y la superficie es de 280 metros cuadrados
Anna35 [415]

Answer:14 m

Step-by-step explanation:

Dada

larga l=20\ m

superficie A=280\ m^2

Suponga que el ancho es w

La superficie está dada por el producto de la longitud y la anchura.

\therefore A=lw\\\Rightarrow 280=20\times w\\\Rightarrow w=14\ m

Por lo tanto, el ancho es de 14 m.

4 0
3 years ago
Find the additive inverse of -7 - 5
PolarNik [594]

Answer:

this is your answer.

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5 0
3 years ago
kennedy has 12 apples. together, she and Ariana have 42 apples. which diagram best represents the situation where A is the amoun
Katarina [22]
There is no diagram to chose from
3 0
3 years ago
If aſc and a +b = C, prove that a|b.
mars1129 [50]

Answer with Step-by-step explanation:

Since we have given that

a + b = c

and a|c

i.e. a divides c.

We need to prove that a|b.

⇒ a = mb for some integer m

Since a|c,

So, mathematically, it is expressed as

c= ka

Now, we put the above value in a + b = c.

So, it becomes,

a+b=c\\\\a+b=ka\\\\b=ka-a\\\\b=a(k-1)\\\\\implies a|b

a=mb, here, m = k-1

Hence, proved.

7 0
4 years ago
-18= 5-(6k - 19) i have the answer but i need help on how to get the answer 7?
insens350 [35]

Answer:

k = 7

Step-by-step explanation:

Step 1: Write equation

-18 = 5 - (6k - 19)

Step 2: Solve for <em>k</em>

<u>Distribute negative:</u> -18 = 5 - 6k + 19

<u>Combine like terms:</u> -18 = -6k + 24

<u>Subtract 24 on both sides:</u> -42 = -6k

<u>Divide both sides by -6:</u> k = 7

Step 3: Check

<em>Plug in k to verify it's a solution.</em>

-18 = 5 - (6(7) - 19)

-18 = 5 - (42 - 19)

-18 = 5 - 23

-18 = -18

7 0
3 years ago
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