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3 years ago

A room has a length of 7 m.

Mathematics

2 answers:

yaroslaw [1]3 years ago

6 0

Answer:

Step-by-step explanation:

A ratio is used in scale drawings of maps and buildings.

That is:

The scale of a drawing = Drawing Length : Actual Length

A scale is usually expressed in one of two ways:

-using units as in 1 cm to 1 km

-without explicitly mentioning units as in 1 : 100,000.

A scale of 1 : 100,000 means that the real distance is 100,000 times the length of 1 unit on the map or drawing.

In your case, where the room has a length of 7m and 1cm on the diagram:

1 cm to 7m = 1cm : 7m

= 1cm : 700cm

= 1 : 700

Artemon [7]3 years ago

3 0

If you convert 7m to centimetres you get 700

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6/7 is the awnser for this one

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2 years ago

Find the missing side of this right a triangle?<br> help pls

yaroslaw [1]

Hi, there!

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To find the missing side length of this triangle (which is a <em>right</em> triangle), we'll use Pythagoras' Theorem.

$-\!\!\!-\!\!\!-\!\!\!\longrightarrow\boldsymbol{a^2+b^2=c^2}$

Here,

$\textsc{legs:}\begin{cases} \bold{a}\\\bold{b} \end{cases}$

Hypotenuse (the longest side): c

We know that

$\bold{a=2 \ and \ b=28}$

So, we can substitute our parameters, and solve for c.

$\bold{2^2+28^2=c^2}$ $-\!\!\!-\!\!\!-\!\!\!\longrightarrow$ square 2 and 28

$\bold{4+784=c^2}$ $-\!\!\!-\!\!\!-\!\!\!\longrightarrow$ add the numbers

$\bold{788=c^2}$ $-\!\!\!-\!\!\!-\!\!\!\longrightarrow$ square root both sides

$\bold{\sqrt{788}=c}$

Hope the answer - and explanation - made sense,

happy studying!!

6 0

2 years ago

Look at the figures. How can you prove these triangles are congruent?

NNADVOKAT [17]

Answer:

You can use the Side-Angle-Side Postulate.

Step-by-step explanation:

The Side-Angle-Side (or SAS) Postulate basically states that if two sides of two triangles and the included angle are congruent, the two triangles are congruent.

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3 years ago

According to the Rational Root Theorem, which number is a potential root of f(x) = 9x8 + 9x6 – 12x + 7?

bogdanovich [222]

Answer:

Seven-thirds

Step-by-step explanation:

The give equation is $f(x)=9x^8+9x^6-12x+7$ .

The leading coefficient is 9

The constant term is 7

According to the rational root theorem, the ratio of factors the constant terms to that of the coefficient of the leading term are all possible rational roots of the given polynomial.

Base on this theorem, $\frac{7}{3}$ or seven thirds is a potential root because the numeration is a factor of 7 and the denominator is a factor of 9.