3 years ago

My house is 20 miles from yours, but on the map it is only 4 mm away.

Mathematics

1 answer:

Yuki888 [10]3 years ago

6 0

Answer:

A. 1mm = 5mi

Step-by-step explanation:

20 mi divided by 4 mm would simplify down to 5 mi per 1mm. If there is 4 mm then there is 5mi*4mm which equals out to 4 mm = 20 mi.

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Liono4ka [1.6K]

Answer:

The height of cuboid is 3 cm

Step-by-step explanation:

Total surface area of cuboid = $2lb+2bh+2hl$

Length of cuboid = 10 cm

Width of cuboid = 2 cm

Let the height be x

Total surface area of cuboid = $2(10)(2)+2(2)(x)+2(x)(10)$

Total surface area of this cuboid is 112 cm squared

$2(10)(2)+2(2)(x)+2(x)(10)=112$

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3 years ago

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4 years ago

For triangle ABC, a = 79, b = 68, c = 61, then M∠A= ___ °Round answer to one decimal place.

Nikolay [14]

Given a triangle ABC below

To find the value of m∠A, we use the cosine formula which is

$\cos A=\frac{b^2+c^2-a^2}{2bc}$

Where

$\begin{gathered} a=79 \\ b=68 \\ c=61 \end{gathered}$

Substitute the values into the cosine formula above

$\begin{gathered} \cos A=\frac{b^2+c^2-a^2}{2bc} \\ \cos A=\frac{68^2+61^2-79^2}{2(68)(61)} \\ \cos A=\frac{2104}{8296} \\ \cos A=0.2536 \\ A=\cos ^{-1}(0.2536) \\ A=75.3\degree\text{ (one decimal place)} \end{gathered}$

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2 years ago

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poizon [28]

Answer:

one fraction 17/5

mixed number: 3 2/5

Step-by-step explanation:

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