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Dominik [7]
3 years ago
13

the perimeter of a rectangle is found by finding the sum of all the sides. write an algebraic expression to represent the perime

ter of a rectangle with length x meters and width 4 meters shorter.​
Mathematics
1 answer:
Hunter-Best [27]3 years ago
5 0

Answer:

2x + 8 meters

Step-by-step explanation:

Perimeter = 2(x + 4)

= 2x + 8

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Solve the right triangle. Round decimal answers to the nearest tenth.
AnnZ [28]

Answer:

See solution below

Step-by-step explanation:

According to pythagoras theorem

hyp^2 = opp^2 + adj^2

10^2 = 4^2 + b^2

100 = 16 + b^2

b^2 = 100-16

b^2 = 84

b = √84

b ≈ 9

Using SOH CHA TOA identity

sin B = AC/AB

Sin B = 9/10

B = arcsin0.9

B ≈ 64degrees

sinA = BC/AB

Sin A = 4/10

A = arcsin0.4

A ≈ 24degrees

5 0
2 years ago
A(n - 3) +8= bn for n please help me
Papessa [141]

Given equation: A(n - 3) +8= bn.

Solution: On the left side of the equation we have A(n-3).

We don't have any sign in between A and parenthesis (n-3).

So, we need to multiply A and (n-3).

We need to apply distributive property to multiply A and (n-3).

Distributing A over (n-3), we get

A(n-3) = A*n - 3*A = An -3A.

Substituting this value in original equation,

An -3A +8= bn.

We need to solve it for n, so we get n terms on a side.

We have An on left side, we need to get rid n from left side.

Subtracting An from both sides, we get

An -3A +8-An= bn-An.

-3A +8 = bn - An.

We can see n is a common factor on rigth side in bn-an.

Factoring out n on right side from bn-an.

-3A +8 = (b - A)n.

Dividing both sides by (b-A),

\frac{(-3A+8)}{(b-A)} = \frac{(b-A)n}{(b-A)}

On right (b-A) paranthiss cancelled and we get n on right side.

\frac{(-3A+8)}{(b-A)} =n   Final answer.

So, that would be our final answer

n = (-3A+8)/(b-A)

7 0
3 years ago
Evaluate the expression 4(2x + 3) + 2(x + 1)-7
Svetlanka [38]
4 (2x + 3) + 2 (x + 1) - 7

8x + 12 + 2x +  2 - 7

10x + 7

10x = -7
10x/10 = -7/10

x = -7/10

hope this helps


4 0
3 years ago
A record store has 3,108 records evenly shared among 6 rows. How many records are in each row?
PilotLPTM [1.2K]

Answer:

518

i don't know if this needs much explaining.

3 0
2 years ago
Read 2 more answers
Helppp please!
bagirrra123 [75]
He had 160$ when he first started
6 0
3 years ago
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