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2 years ago

Plssss help and really quick!!!!!!!

Mathematics

2 answers:

Colt1911 [192]2 years ago

7 0

Hello can I get a owa owa and the answer is 20

spin [16.1K]2 years ago

5 0

(5•x)-20=60+x
5x-20=60+x
4x=80
x=20
I’m a bit confused on the setup but I think this is the right one. Hope it helped! Please give brainliest if it did! Thanks

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The ratio of the width to the length of a rectangle is 2:3, respectively. Answer each of the following. a By what percent would

Elina [12.6K]

Answer:

The percentage increase in Area of rectangle is 200%

Step-by-step explanation:

Given as :

The ratio of the width to the length of a rectangle is 2:3

Let The length of rectangle = 2 x

Let The width of rectangle = 3 x

∵ Area of rectangle = length × width

So, $A_1$ = 2 x × 3 x

Or, $A_1$ = 6 x²

<u>Again</u>

The increased length of rectangle = 2 x + 2 x = 4 x

The increase width of rectangle = 3 x + 50% of 3 x

I.e The increase width of rectangle = 3 x + 1.5 x = 4.5 x

∵ Increased Area of rectangle = increased length × increased width

Or, $A_2$ = 4 x × 4.5 x = 18 x²

So, The percentage increase in area = $\dfrac{A_2 - A_1}{A_1}$ × 100

Or, The percentage increase in area = $\frac{18 x^{2}-6x^{2}}{6x^{2}}$ × 100

Or , The percentage increase in area = $\dfrac{12}{6}$ × 100

∴ The percentage increase in area = 200

Hence, The percentage increase in Area of rectangle is 200% Answer

5 0

3 years ago

THESE ARE SEPARATE QUESTIONS THAT I DECIDED TO COMBINE:

saul85 [17]

1). Her walking pace is (1.75 miles) / (50 minutes).

If you want it in units of (miles per hour), do it like this:

   (1.75 miles / 50 minutes) x (60 minutes / 1 hour)

   = ( 1.75 x 60 / 50 ) miles per hour.

2). The average change was

   (30 - 45) degrees / (5 minutes) .

I'm sure you can do the division and make an integer out of that.

3). Each bracelet cost $3.10.
Caroline bought five of them, so she spent $3.10 five times.
Either do the multiplication, or else write down $3.10 five times
and do the addition.

4). In order to factor the expression, the two terms would need
to have some common factor ... both terms need either a power
of 'x', or they need two numbers that have a common factor.
They don't both have an 'x', and 13 and 10 have no common factor.

5). Todd earned 'T' dollars.
Twice what Todd earned is 2T .
$350 more than that is 2T+350 .
The question says that 2,500 is exactly that amount,
so you can write
      2T + 350 = 2,500

Subtract 350 from each side:    2T    = 2,150

Divide each side by 2: (you can finish it now)

8 0

3 years ago

How do I get the answer to this math problem n + 7 < -3 what is the formula for the math problem

laiz [17]

If I understand the question, you have to get n alone. in this case, you have to subtract 7 from both sides, resulting in n (is less than) -10

8 0

3 years ago

Please help!<br> thankjs

olga_2 [115]

Answer:

20th: 100 nth: 5

Step-by-step explanation:

the table is multiplying by 5

so 5 × 20 = 100

8 0

3 years ago

Please help me i cant get this i. honestly just need someone to give the answers for this lesson

Likurg_2 [28]

Area of the triangle = (1/2)*base* height = (1/2)*3*6 = 9 sm²
We have 4 triangles like this one ,
so area of 4 triangles = 9*4 = 36 cm².
Area of the square = 3*3 = 9 cm²

Surface area here means area all triangles + area of the square =36 +9 =
= 45 cm ²

Answer is 45 cm².

7 0

3 years ago