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3 years ago

Pls help math problem

Mathematics

1 answer:

IgorLugansk [536]3 years ago

5 0

Answer:

angle plm+angle lpm+angle pml=180°[by angle sum property]

21°+angle lpm+38°=180°

59°+ lpm=180°

lpm=180°-59°

lpm=121°

lpm+npl=180°[by limear pair]

121°+npl=180°

npl=180°-121°

npl=59°

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En una tienda de electrodomesticos , una nevera con un precio de 260€ fue rebajada un 15% ; al cabo de un mes volvieron a rebaja

Mamont248 [21]

Answer:

Part 1) The price after the second discount is 187.85€

Part 2) The percentage of total variation is 27.75%

Step-by-step explanation:

The question in English is

In an appliance store, a refrigerator with a price of 260€ was discounted by 15%; after one month it was discounted by another 15%. What is the price after the second discount? What is the percentage of total variation?

Part 1)

Find out the price after the second discount

we know that

$15\%=15/100=0.15$

A) The first discount is equal to

260€(0.15)=39€

The price after the first discount is equal to

260€-39€=221€

B) The second discount is equal to

221€(0.15)=33.15€

The price after the second discount is equal to

221€-33.15€=187.85€

Part 2) Find out the percentage of total variation

we know that

The original price of 260€ represent the 100%

by using proportion

Find out the percentage that represent (260€-187.85€)=72.15€

$\frac{260}{100}=\frac{72.15}{x}\\ \\x=72.15*100/260\\ \\x=27.75\%$

8 0

4 years ago

Help me out pleaseeee

Ghella [55]

Step-by-step explanation:

5p+11+8p-4

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3 0

2 years ago

Geometry please help! 7. Kite x = _ y = 146

Rasek [7]

The angles of a kite adds up to 360 so 146 + 146 + 47 which equals 339. 360 - 339 equals 21 so x = 21 degrees. hope that helps!

5 0

3 years ago

Given 1+tanx/1+cotx=2, find a numerical value of one trigonometric function of x.

DedPeter [7]

Answer:

tanx = 2

Step-by-step explanation:

Given (1 + tanx) / (1 + cotx) = 2

Using the formula:- cotx = 1 / tanx.

Change cotx into tanx in the equation:-

(1 + tanx) / (1 + 1/tanx) = 2

(1 + tanx) / {(tanx + 1) / tanx} = 2

Keep Numerator as it is, Change division to multiplication, Flip denominator:-

{ (1 + tanx)/1 } * { tanx/(tanx + 1) } = 2

tanx * (1 + tanx) / (tanx + 1) = 2

tanx = 2

Hence, the answer is tanx = 2.

8 0

3 years ago

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Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius of centimeters. what

Kobotan [32]

I hope this helps you

volume of sphere =4/3.pi.r^3

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3 years ago