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3 years ago

Can someone help me with and and can you please write how you got it so I can understand

Mathematics

2 answers:

EastWind [94]3 years ago

8 0

Answer:

12x + 4

Step-by-step explanation:

ok so a rectangle has 4 sides, 2 of which are called lengths, and 2 of which are widths.

length = 2x-3

width = 4x+5

the perimenter is the total of the 4 sides.

2(2x-3) = 4x-6 (the total for lengths)

2(4x+5) = 8x+10 (the total for widths)

add the 2 together:

12x+4

vekshin13 years ago

3 0

Answer:

2(2x - 3) + 2(4x + 5)= OR 12x + 4

Step-by-step explanation:

First, we need to know the formula of calculating the perimeter

The formula is 2(Length) + 2(Width) = Perimeter

The length is 2x - 3

The width is 4x + 5

Now fill in the known dimensions in the formula

2(2x - 3) + 2(4x + 5)= perimeter

This expression can be used to represent the perimeter of Rectangle ABCD, though (depending on the teacher) it is not simplified.

We remove the brackets by multiplying the number that's outside the brackets by the numbers or figures inside.

hence, 4x - 6 + 8x +10 = the perimeter

Note: A negative multiplied by a negative equals a positive. A positive multiplied by a negative and vice versa equals a negative. A positive multiplied by a positive equals a positive.

We can now simplify further by adding like terms. i.e, x + x, and integers + integers.

4x + 8x - 6 + 10 = the perimeter

12x + 4 = the perimeter

The perimeter can be represented by the expression, 12x + 4

Or (depending on the teacher,) 2(2x - 3) + 2(4x + 5)=

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A lighthouse has a shadow that is 36 feet long. Zara is 4 feet tall, and she is standing next to the lighthouse. Zara has a shad

xxTIMURxx [149]

At a particular time, objects and their shadows are proportionate.

Therefore, in figure,

$\frac{AB}{FD}= \frac{BC}{DE}$ --- (1)

where AB is the height of the lighthouse, BC, its shadow and FD is the height of Zara and DE is her shadow.

From the given information,

BC = 36 feet

FD = 4 feet and DE = 3 feet

(1) becomes

$\frac{AB}{4}= \frac{36}{3}$

$\frac{AB}{4}= 12$

AB = 48

Hence, the height of the lighthouse is 48 feet.

8 0

4 years ago

Read 2 more answers

Alejandra plans to sew fringe on a scarf. The scarf is shaped rectangle. The length of the scarf is 48 inches. The width is one

aleksandr82 [10.1K]

Ok so you will be finding the perimeter of this rectangle. The formula is P(perimeter)=2L(length) + 2W(width)

so the length is 48 and the width is 1/2 of 48, and we all know that 1/2 of 48 = 24 right? so in the formula is says 2L so we will take 48 and multiply it by 2 and get 96. The same way with the width. 24 times 2 = 48 so then we add them together and get 144. Therefore the perimeter and the length of fringe that she will use (or how ever you say it) will be 144 inches.

Hope this helps!;)

5 0

3 years ago

Zenin earns $142 per shift at his new job. During a pay period, he works 12 shifts. What would his pay be for that period?

Degger [83]

Answer:

total pay for his work is $1704

Step-by-step explanation:

given data

Zenin earns = $142 per shift

total shifty = 12

to find out

What would his pay for 12 shift

solution

we have given per shift charge and total shift

total pay for his work = total shift × per shift charge ................1

put here value

total pay for his work = 12 × $142

total pay for his work = $1704

3 0

3 years ago

PLEASE HELP ASAP

Igoryamba

Answer:

∠1 - 40°

Step-by-step explanation:

∠1 - 40°

b/c it's a right triangle and we have two angles given, 50° and 90°. Add them and subtract by 180° and get 40°.

∠2 - 140°

b/c an exterior (outside) angle is equal to the two most isolated / farthest angles added. The two most is angles are 105° and 35°, add them and get 140°.

∠3 - 40°

b/c ∠'s 1 and 3 are vertical angles meaning they're equal so since ∠1 is 40°, so is ∠3.

∠4 -

b/c ∠' s 2 and 4 are vertical angles meaning they're equal so since ∠2 is 140°, so is ∠4.

∠5 - 35°

b/c we have two angles, 105° and 40°. Add them and subtract by 180° and get 35°.

I hope that helps you out!!

5 0

3 years ago

It takes stewart 8 minutes to drive to the store. It takes him 7 times as many minutes to Drive to work than it takes him to Dri

fenix001 [56]

Answer:

Step-by-step explanation:

8 * 7 = 56

How many minutes does it take stewart to Drive to work? = 7 times 8 minutes

5 0

3 years ago