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4 years ago

5

80% of _ games is 32 games AND 75% of peaches is 15 peaches

2 answers:

RoseWind [281]4 years ago

4 0

Hi there!

80% of 40 games is 32 games AND 75% of 20 peaches is 15 peaches.

bulgar [2K]4 years ago

4 0

1) 80% of x is 32
80/100=32/x
0.8= 32/x
0.8x=32
x=32/0.8
x=40
2) 75% of x is 15
75/100=15/x
0.75=15/x
0.75x=15
x=15/0.75
x=20
:)

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A bag of corn tortilla chips costs 2.89 after a 15% discount. What is the original price?

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Answer:

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Step-by-step explanation:

Let the original price of the bag be = P, the selling price =2.89 after a 15% discount,

Then, Selling price= Original price- Discount on original price

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2 years ago

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3 years ago

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Identify PR rounded to the nearest tenth. Please help asap!!

kicyunya [14]

Trigonometric Functions:

$S\frac{O}{H} C\frac{A}{H} T\frac{O}{A}$

$Sine\frac{Opposite}{Hypotenuse} Cos\frac{Adjacent}{Hypotenuse} Tan\frac{Opposite}{Adjacent}$

You have the angle and the adjacent. You need to find the hypotenuse (PR). Therefore, you use cos.

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Rearrange the formula to find H (PR):

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3 years ago

HELP PLEASE!!! 10 PTS!!

allsm [11]

Answer:

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Step-by-step explanation:

Given information: AC = AD, AB⊥BD, m∠DAC = 44° and CE bisects ∠ACD.

If two sides of a triangles are congruent then the opposite angles of congruent sides are congruent.

AC = AD (Given)

$\angle ADC\cong \angle ACD$

$m\angle ADC=m\angle ACD$

According to the angle sum property, the sum of interior angles of a triangle is 180°.

$m\angle ADC+m\angle ACD+m\angle DAC=180$

$m\angle ACD+m\angle ACD+44=180$

$2m\angle ACD=180-44$

$2m\angle ACD=136$

Divide both sides by 2.

$m\angle ACD=68$

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$m\angle ACE=m\angle DCE=\dfrac{\angle ACD}{2}$

$m\angle ACE=m\angle DCE=\dfrac{68}{2}$

$m\angle ACE=m\angle DCE=34$

Use angle sum property in triangle CDE,

$m\angle CDE+m\angle DCE+m\angle DEC=180$

$68+34+m\angle DEC=180$

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Subtract 102 from both sides.

$m\angle DEC=180-102$

$m\angle DEC=78$

Therefore, the measure of angle DEC is 78°.

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3 years ago