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Natali5045456 [20]

3 years ago

13

I need help on doing this

2 answers:

Rudik [331]3 years ago

7 0

Answer:

#5A=6

5B=4

Step-by-step explanation:

Helga [31]3 years ago

3 0

Answer:

5a) x=40 using the formulae for perimeter of a rectangle p=2(l+b)

120=2(l+20) factor out and you have 120=2l+40 make L subject of formulae then you have 2L=120-40 so L=80/2 L=40cm.

(5b) use the same procedure p=2(l+b) then L=250m.

6a) since both area and perimeter are give then using p=2(l+b), 20=2(L+B) so (L+b)=20/2 therefore (L+b)=10

Now introduce the formular for area which is A=L*B 24=L*B then making L sub of formular L=24/B substitute into (L+B)=10 then u have 24/B +B =10 find LCM you then have 24+B^2=10B this becomes a quadratic equation B^2 -10B +24 =0 solve and you have B=4 or 6. Substitute into (L+B)=10 to find L. L= 4 or 6

6b) use the same procedure as 6a.

L=2 or 12 and W =12 or 2

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Jade buys a blouse and a skirt for 3/6 of their original price. Jade pays a total of $31 for the two items. If the original pric

Damm [24]

Answer:

3/4 times 18= 13.5

31.5-13.5=18

It cost 18 dollars for the skirt with a discount.

It cost 13.5 for the blouse as opposed to the original price of 18 dollars.

18(skirt)+13.5(blouse)=31.5

If you set up a proportion to find the original price of the skirt you will get the answer.

18/x=75/100

75x=18 times 100

75x=1800

75x/75=1800/75

x=24

The original price of the skirt is 24 dollars.

Step-by-step explanation:

4 0

3 years ago

I forgot how to do these problems can you help me

Galina-37 [17]

Answer:

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Step-by-step explanation:

3 0

3 years ago

Solve: x2 − x − 6/x2 = x − 6/2x + 2x + 12/x After multiplying each side of the equation by the LCD and simplifying, the resultin

Vesna [10]

The resulting equation after simplyfing the given equation is 3x^2 + 20x + 12 = 0 and whoose solutions are x = -2/3 or x = -6.

According to the given question.

We have an equation

$\frac{x^{2}-x-6 }{x^{2} } = \frac{x-6}{2x} +\frac{2x+12}{x}$

So, to find the resulting equation of the above equation we need to simplify.

First we will take LCD

$\frac{x^{2} -x - 6 }{x^{2} } = \frac{x -6+2(2x + 12)}{2x}$

$\implies \frac{x^{2}-x-6 }{x^{2} } =\frac{x-6+4x+24}{2x}$

$\implies \frac{x^{2}-x-6 }{x^{2} } = \frac{5x +18}{2x}$

Multiply both the sides by x.

$\frac{x^{2}-x-6 }{x} = \frac{5x+18}{2}$

Again multiply both the sides by x

$2x^{2} -2x-12 = 5x^{2} +18x$

$\implies 5x^{2} -2x^{2} +18x +2x +12 = 0$

$\implies 3x^{2} + 18x+2x + 12 = 0$

Factorize the above equation

⇒3x(x+6)+2(x+6) = 0

⇒(3x + 2)(x+6) = 0

⇒ x = -2/3 or x = -6

Hence, the resulting equation after simplyfing the given equation is 3x^2 + 20x + 12 = 0 and whoose solutions are x = -2/3 or x = -6.

Find out more information about equation here:

brainly.com/question/2976807

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7 0

1 year ago

Can anyone please help me with this geometry question?

Ainat [17]

Answer:

Step-by-step explanation:

let base be x and height be 3x

we know area of parallelogram is

base*height

ie x*3x=675

3x^2=675

x^2=675/3

x^2=225

x= square root of 225

x=15

therefore base =15

height = 45

8 0

3 years ago

Is 1/4 bigger then 1/20

Bond [772]

Yes, 1/4 is bigger than 1/20

7 0

3 years ago

Read 2 more answers