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3 years ago

SOMEONE PLSSS HELP I REALLY NEED HELP PLS SHOW YOUR WORK :)

Mathematics

2 answers:

V125BC [204]3 years ago

4 0

Answer:

Its 0=9

Step-by-step explanation:

It's simple I cannot really show my work but trust me

Volgvan3 years ago

4 0

Answer:

Step-by-step explanation:

I think its correct one

2.3x - 2 = 3x+ 7

or, 3x - 2.3x = 7 + 2

or, x = 9/0.7

or, x = 12.8571

∴ x = 12.8571

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A rectangle is twice as long as it is wide and has the same perimeter as a square whose area is 36 square feet larger than that

Korvikt [17]

Answer:

rectangle: 12 ft × 24 ft
square: 18 ft square

Step-by-step explanation:

You want the dimensions of a rectangle and square such that they have the same perimeter, but the square has an area of 36 more square feet. The rectangle is twice as long as wide.

<h3>Setup</h3>

Let x represent the side length of the square. Then its area is x², and the area of the rectangle is (x² -36).

This area is the product of length and width. The expression factors as ...

rectangle area = x² -36 = (x +6)(x -6)

<h3>Solution</h3>

If we assume these factors are the dimensions of the rectangle, then the longer dimension is twice the shorter one:

(x +6) = 2(x -6)

18 = x . . . . . . . . . add 12-x to both sides

This is the side length of the square. The rectangle dimensions are ...

x+6 = 18+6 = 24 . . . . feet long

x -6 = 18 -6 = 12 . . . . feet wide

The rectangle is 12 feet wide and 24 feet long. The square is 18 feet on a side.

<em>Additional comment</em>

The perimeter in each case is 4x = 2((x+6) +(x -6)) = 72 ft.

The area of the rectangle is (12 ft)(24 ft) = 288 ft². The area of the square is (18 ft)² = 324 ft², a value that is 36 ft² more than the rectangle area.

<em>Alternate solution</em>

Using x for the width of the rectangle, the length is 2x and its area is x(2x) = 2x². The perimeter is 2(x +2x) = 6x, so the side length of the square is (6x)/4 = 3/2x and its area is (3/2x)² = 9/4x².

The difference is 36 square feet, so we have ...

9/4x² -2x² = 36 = x²/4 ⇒ x = √(36·4) = 6·2 = 12 . . . . width of rectangle

8 0

1 year ago

A telemarketing company calls telephone numbers chosen at random. It finds that 30% of calls are not completed (the party does n

cupoosta [38]

Answer:

21%

Step-by-step explanation:

Actually there are three levels of process here.

If 100 calls are made only 70 calls are completed (since 30%not completed)

Out of these 70 completed we find that 40% i.e. 28 calls to a woman and 30% i.e. 21 go to a man.

28 females and 21 males

Out of 28 females 45% buy something = $0.45*28=12.6$

Out of 21 males 40% buy something = $0.4*21=8.4$

Total percent of calls result in a sale = $12.6+8.4=21$

So 21% of calls result in a sale

7 0

3 years ago

How do you use the GCF to write equivalent fractions?

Anastasy [175]

Answer:

Step-by-step explanation:

To find equivalent fractions, we multiply the numerator and the denominator by the same number, so we need to multiply the denominator of 7 by a number that will give us 21. Since 3 multiplied by 7 gives us 21, we can find an equivalent fraction by multiplying both the numerator and denominator by 3.Oct 4, 2021

3 0

3 years ago

If f(x)=2x-4and g(x)=x^2 what is f(g(x))

DerKrebs [107]

F(g(x))
sub g(x) for every x in f(x)

f(g(x))=2(g(x))-4
f(x^2)=2(x²)-4
f(g(x))=2x²-4

7 0

3 years ago

Please help me I really can't do these

Gnesinka [82]

Answer:

$110 in^{2}$

Step-by-step explanation:

$===========================================$

Formulas:

Area of a rectangle/square:

$A=lw$

$===========================================$

<u>Squares(2):</u>

5*5=25

Multiply by 2

<u>Rectangles(4):</u>

5*3=15

Multiply by 4.

<u>Total:</u>

Add.

50+60= 110 in2

I hope this helps!

4 0

3 years ago