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3 years ago

What is the decimal conversion of 8 39/40 and does the decimal repeat or terminate?

Mathematics

1 answer:

alukav5142 [94]3 years ago

3 0

The decimal conversion to 8 39/40 is 8.975 and the decimal terminates.

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Find the surface area of a square pyramid with side length 5 ft and slant height 7 ft.

harina [27]

Answer:

99.33ft^2

Step-by-step explanation:

The surface area of a square pyramid is expressed as;

TSA = a²+2a√a²/4 + h²

Given that

a = 5ft

h = 7ft

Substitute

TSA = 5²+2(5)√5²/4 + 7²

TSA = 25+10√25/4 + 49

TSA = 25 + 10√(221/4)

TSA = 25 + 10(√55.25)

TSA = 25 + 10(7.433)

TSA = 25 + 74.33

TSA = 99.33ft^2

Hence the surface area of a square pyramid with side length 5 ft and slant height 7 ft is 99.33ft^2

3 0

2 years ago

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Snowcat [4.5K]

Answer:

a ce e asta că nu înțeleg help me

Step-by-step explanation:

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2 years ago

Given: The

AlekseyPX

Answer:

Step-by-step explanation:

We can calculate for a using sine rule.

For angle A,

A + 27° + 82° = 180 ( sum of angles in a triangle).

A + 109 = 180

A = 180 - 109 = 71°

Therefore,

A = 71°

calculating for side a

$\frac{sin \: 27}{12} = \frac{sin71}{a} \\ a = \frac{12 \times sin71}{sin27} \\ a \: = \frac{11.346}{0.454} \\ a = 25$

7 0

1 year ago

For every 1 litre of water used to make a medicine, 199ml of sucrose and 271ml of saline solution are used. Express the amount o

sashaice [31]

Answer:

Step-by-step explanation:

water = 1 litre = 1000 ml

water : sucrose : saline = 1000 : 199 : 271

4 0

3 years ago

If the circumference of a circle measures

RoseWind [281]

<h2>Therefore the area of the circle is = $289\pi$ $cm^2$ </h2>

Step-by-step explanation:

Given that the circumference of a circle measures $34 \pi$ cm

Let the radius of the circle be = r

Then circumference = $2 \pi r$ cm

According to problem

$2 \pi r$ = $34 \pi$

⇔ $r = \frac {34}{2}$

⇔ $r = 17$ cm

Therefore the area of the circle is = $\pi r^2$

= $\pi 17^2$ $cm^2$

= $289\pi$ $cm^2$

8 0

3 years ago