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3 years ago

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174 people ate lunch at Alice’s restaurant yesterday, and 1/3 of them had dessert. How many people had dessert after lunch?Expla

in how you got your answer. (90 points!!!)

2 answers:

olasank [31]3 years ago

6 0

Answer:

58 people

Step-by-step explanation:

174 people ate lunch.

1/3 of the 74 people had dessert after lunch.

Multiplying 1/3 and 174.

1/3 × 74

= 58

58 people had desert after lunch.

Maurinko [17]3 years ago

6 0

Answer:

$\boxed{ 58\ people}$

Step-by-step explanation:

People who ate lunch = 174 people

People among among them who had desserts = 1/3 of the total

(Remember "of" means to "multiply")

=> 1/3 * 174

=> 1 * 58

=> 58 people

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2 years ago

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Anuta_ua [19.1K]

Answer:

<h3><u>Let's</u><u> </u><u>understand the concept</u><u>:</u><u>-</u></h3>

Here angle B is 90°

So $\triangle ABC$ and $\triangle ABD$ Are right angled triangle

So we use Pythagoras thereon for solution

<h3><u>Required Answer</u><u>:</u><u>-</u></h3>

First in triangle ABC

perpendicular=p=8cm

Hypontenuse =h =10cm

We need to find base=b

According to Pythagoras thereon

${\boxed{\sf b^2=h^2-p^2}}$

Substitutethe values

$\longrightarrow$ $\sf b^2=10^2-p^2$

$\longrightarrow$ $\sf b={\sqrt {10^2-8^2}}$

$\longrightarrow$ $\sf b={\sqrt{100-64}}$

$\longrightarrow$ $\bf b={\sqrt {36}}$

$\longrightarrow$ $\sf b=6$

$\therefore$ $\overline{BC}=6cm$

BD=BC+CD

$\longrightarrow$ $BD=9+6$

$\longrightarrow$ $BD=15cm$

Now in $\triangle ABD$

Perpendicular=p=8cm

Base =b=15cm

We need to find Hypontenuse =AD(x)

According to Pythagoras thereon

${\boxed {\sf h^2=p^2+b^2}}$

Substitute the values

$\longrightarrow$ $\sf h^2=8^2+15^2$

$\longrightarrow$ $\sf h={\sqrt {8^2+15^2}}$

$\longrightarrow$ $\sf h={\sqrt {64+225}}$

$\longrightarrow$ $\sf h={\sqrt {289}}$

$\longrightarrow$ $\sf h=17cm$

$\therefore$ ${\underline{\boxed{\bf x=17cm}}}$

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3 years ago