4. Raj and Saleem can type 20 and 40 words,

Mathematics

1 answer:

kondaur [170]3 years ago

3 0

Answer:

Raj will take 10 minutes

explanation:-

Raj types 20 words per minute

Saleem types 40 words per minute

I. e speed and time are inversly proportional.

therefore, Raj will take twice the time Saleem takes.

Raj takes 2 * 5 = 10 minutes

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If m<6 = (3x-13)° and m<8 = (2x-5°), what is the value of x

mestny [16]

Answer:

<h2>The value of x is 8.</h2>

Step-by-step explanation:

We know that $m\angle 6 = m \angle 8$

Each angle is defined as

$m\angle 6 = 3x-13$ and $m \angle 8 =2x-5$

Replacing all in the first equation, we have

$3x-13=2x-5\\3x-2x=13-5\\x=8$

Therefore, the value of x is 8.

6 0

3 years ago

Calculate the perimeter of a triangle whose dimensions are 1m 60cm, 1m 80cm and 2m.

Tatiana [17]

★ AnsWer :

➨ 540 cm

★ Step by step Explaination :

Let triangle be ABC,

1m = 100 cm

$\begin{lgathered}\bullet\:\:\textsf{AB = 1m 60cm = \textbf{160 cm}}\\\bullet\:\:\textsf{BC = 1m 80cm = \textbf{180 cm}}\\\bullet\:\:\textsf{CA = 2m = \textbf{200 cm}}\end{lgathered}$

$\setlength{\unitlength}{1.5cm}\begin{picture}(6,8)\linethickness{0.5mm}\qbezier(1,.5)(2,1)(4,2)\qbezier(4,2)(2,3)(2,3)\qbezier(2,3)(2,3)(1,0.5)\put(.7, .3){$C$}\put(4.05, 1.9){$B$}\put(1.7, 2.95){$A$}\put(3.2, 2.5){\sf{160 cm}}\put(0.7,1.7){\sf{200 cm}}\put(2.7, 1.05){\sf{180 cm}}\end{picture}$

$\rule{130}1$

$\underline{ \large \purple{ \mathscr{\dag\:A \bf{ccording} \: to \: \mathscr {Q} \bf{uestion} ....}}}$

$\begin{lgathered}\dashrightarrow\tt\:\: Perimeter_{{\tiny\triangle ABC}}=Sum\:of\:all\:sides\\\\\\\dashrightarrow\tt\:\: Perimeter_{{\tiny\triangle ABC}} = AB + BC + CA\\\\\\\dashrightarrow\tt\:\: Perimeter_{{\tiny\triangle ABC}} = 160 + 180 + 200\\\\\\\dashrightarrow\:\:\underline{\boxed{\tt Perimeter_{{\tiny\triangle ABC}} = 540 \:cm}}\end{lgathered}$