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Reptile [31]
2 years ago
10

Please help me please help​

Mathematics
1 answer:
Gre4nikov [31]2 years ago
3 0

Answer:

hmmm I don't know about that

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The length of a rectangle is 1 inch less than twice the width. the area is 21 inches^2 what is the length?
ale4655 [162]
Hi.

Formula for area: A = 2l + 2w, where l is the length and w is the width.

Given information:
• l = 2w - 1
• A = 21 in^2

We can plug in our values accordingly and solve for w.

A = 2l + 2w
21 = 2(2w - 1) + 2w
21 = 4w - 2 + 2w
23 = 6w - 2
23 = 6w
3.83 = w

Plug 3.83 for w into 2w - 1 to find length.

2(3.83) - 1
7.66 - 1
6.66

Finally, check your work by plugging your values into the original equation.

21 = 2(6.66) + 2(3.83)
21 = 13.32 + 7.66
21 = 20.98

Answer:
The length is approximately 6.66 inches.
4 0
3 years ago
A television regularly costs $180, but it is on sale for 40% off. There is a 5% sales tax on the sale price. How much does the t
Anuta_ua [19.1K]

Answer:

$113.4

Step-by-step explanation:

If it is 40% off then it is 100-40 = 60% of original price.

So we do 180$ * .6 = $108 before tax.

To add on tax we do: 100 + 5 = 105% of that price.

So we do: $108 * 1.05 = $113.4 after discount and tax.

7 0
3 years ago
The volume of a cube is 216 ft^3. What is the length of a side?
nlexa [21]

Answer:

54

Step-by-step explanation:

cause a cub has 4 sides so each side is 54

3 0
3 years ago
Read 2 more answers
Which one is the correct answer?
KatRina [158]

\large \sf \pmb{D) \:  \frac{3n}{2}  + 5 \geqslant  - 12  }\\

  • Three time the quotient of a number and 2 increased by 5 is at most -12.
3 0
2 years ago
Read 2 more answers
Please please help me
qwelly [4]

Answer:

  BF = 30

Step-by-step explanation:

Each midsegment is half the length of the parallel side of the triangle. CE is 60 and is parallel to BF, so BF = 60/2 = 30.

4 0
3 years ago
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