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MArishka [77]
3 years ago
9

[FIRST TO ANSWER GETS BRAINLIEST] Here is a rectangle ABCD. The length of the rectangle is increased by 10%. The width of the re

ctangle is increased by 5%. Find the percentage increased in the perimeter of tge rectangle.

Mathematics
1 answer:
erastovalidia [21]3 years ago
6 0
New length = 30x110% = 33cm
new width = 20x105% = 21cm

original perimeter = 30x2 + 20x2
= 60 + 40 = 100
new perimeter = 33x2 + 21x2
= 66 + 42 = 108

increase in perimeter = 108-100 = 8
percentage increase = 8/100 x 100% = 8%
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marshall27 [118]
1 is incorrect. to solve for f, you have to get it alone, and right now you have a negative sign in your way.

you can eliminate the negative by dividing both sides by -1:

-f = -100

divide by -1 to cancel out the - in front of f

f = 100
6 0
4 years ago
Here is a distribution of six observations, sorted in ascending order: 3.7, 8.2, 9.9, 11.3, 15.6, 17.3
Tanzania [10]
This is the concept of probability and statistics, to get the summation of (x-μ) where μ is the mean will be given by:
(3.7-11)+(8.2-11)+(9.9-11)+(9.9-11.3)+(15.6-11)+(17.3-11)
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7 0
4 years ago
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My Algebra 1 teacher is teaching us slope. Any tips and tricks?
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6 0
3 years ago
2x+5y=4<br> 2x-2y=18<br> using the method of elimination
ExtremeBDS [4]

Answer:

Equation Form:

x=7,y=−2

Step-by-step explanation:

Multiply each equation by the value that makes the coefficients of x

opposite.

(−1)⋅(2x+5y)=(−1)(4)

2x−2y=18

Simplify.

−2x−5y=−4

2x−2y=18

Add the two equations together to eliminate x

from the system.

(−2x−5y=−4) +(2x−2y=18) = (-7y=14)

Divide each term by −7 and simplify.

y=−2

Substitute the value found for y into one of the original equations, then solve for x.

x=7

The solution to the independent system of equations can be represented as a point. (7,−2)

The result can be shown in multiple forms.

Point Form:

(7,−2)

Equation Form:

x=7,y=−2

8 0
3 years ago
A wooden jewelry box has the shape of a prism with a regular hexagonal base of 85.3 in2. The sides of the hexagonal base are all
Anna35 [415]

Answer:

792.9 in²

Step-by-step Explanation:

Given:

Area of the base of the regular hexagonal prism box (B) = 85.3 in²

Each side length of hexagonal base (s) = 5.73 in

Height of prism box (h) = 18.10 in

Required:

Surface area of the wood used in making the hexagonal prism box

SOLUTION:

Surface area for any given regular prism can be calculated using the following formula: (Perimeter of Base × height of prism) + 2(Base Area)

Perimeter of the hexagonal base of the prism box = 6(5.73) (Note: hexagon has 6 sides.)

Perimeter of base = 34.38 in

Height = 18.10 in

Base area is already given as 85.3 in²

Surface area of the hexagonal prism box = (34.38*18.10) + 2(85.3)

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<em>Surface area of the wood used in making the jewelry box ≈ 792.9 in²</em>

3 0
3 years ago
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