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2 years ago

A store had a 20% off

Mathematics

1 answer:

liraira [26]2 years ago

3 0

Answer:

$60

Step-by-step explanation:

20% off means 80% of original price

80% = 8/10 or 0.8

75 * 0.8 = 60

you could also do 20% = 1/5, 1/5 of 75 is 15, 75-15=60

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This problem please

miskamm [114]

surface areas:

1. 94 ft

2. 96 cm

volumes:

1. 60 ft

2. 42 cm

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2 years ago

Help loll i need an 100

vlabodo [156]

Answer:

-4 (as - and + = -)

Step-by-step explanation:

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3 years ago

Read 2 more answers

A 20 ft. ladder is used against a 15 ft. wall. What is the measure of the angle made by the ladder and the ground (nearest whole

Brrunno [24]

Step-by-step explanation:

Given that,

The length of a ladder, H = 20 feet

The height of the wall, h = 15 ft

We know that,

$\sin\theta=\dfrac{h}{H}$

h is perpendicular and H is hypotenuse

So,

$\sin\theta=\dfrac{15}{20}\\\\\theta=\sin^{-1}(\dfrac{15}{20})\\\\\theta=48.59^{\circ}$

Now using Pythagoras theoerm,

$b=\sqrt{H^2-h^2}\\\\b=\sqrt{20^2-15^2}\\\\b=13.2\ ft$

Hence, the angle made by the ladder and the ground is 48.59° and the ladder is 13.2 feet from the wall on the ground.

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3 years ago

Please help mee l don’t understand new topic please

jasenka [17]

Answer to first four-

first one- 2f+2f=60

4f=60

f=15

second one-18+2d=38

2d=20

d=10

(short side is 9)

third one-2a+a+5+a+5=26

4a+10=26

a=4

long side is 9

short side is 8

fourth one-3xy+3xy+xy=63

7xy=63

xy=9

long side is 27

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2 years ago

X<br> 107<br> 34<br> What is the measure of Angle X?

garri49 [273]

Answer:

Angle X is 39 degrees

Step-by-step explanation:

107+34=141 degrees

180-141= 39 degrees

Angle X is 39 degrees.

5 0

2 years ago