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3 years ago

WHOEVER ANSWERS THIS CORRECTLY IN 3 MINS GETS BRAINLIEST!!

Mathematics

2 answers:

tiny-mole [99]3 years ago

8 0

Answer:

Step-by-step explanation:

seraphim [82]3 years ago

7 0

Answer: C) DG because corresponding parts of congruent triangles are congruent

Step-by-step explanation:

<u>CPCTC</u> :- It is a Property of congruent triangles that says that the corresponding parts of congruent triangle are congruent.

Given : ΔCAT ≅ ΔDOG

Then the corresponding parts of both triangle are congruent.

i.e. corresponding sides of both triangle are congruent.

Since CT is corresponding to DG.

Then, CT is congruent to DG .

Hence, the correct answer is C) DG because corresponding parts of congruent triangles are congruent.

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In the 2012 Paralympic Games, the total number of gold and silver medals won by Brazil was 35 The ratio of the number of gold me

Thepotemich [5.8K]

Answer:

the number of silver medals won by Brazil is 14

Step-by-step explanation:

The computation of the number of silver medals won by Brazil is shown below:

Given that

Total number of gold and silver medal wons by Brazil was 35

And, the ratio of number of gold medals to the number of silver medals be 3 : 2

Based on the above information

The number of silver medals won would be

= 35 × 2 ÷ (3 + 2)

= 35 × 2 ÷ 5

= 14

hence, the number of silver medals won by Brazil is 14

7 0

3 years ago

Work out the angle of elevation from the

insens350 [35]

$\quad \huge \quad \quad \boxed{ \tt \:Answer }$

$\qquad \tt \rightarrow \:Angle \:\: of \:\: elevation= 30°$

____________________________________

$\large \tt Solution \: :$

Let the angle of elevation be " x "

$\qquad \tt \rightarrow \: \cos(x) = \dfrac{9 \sqrt{3} }{18}$

$\qquad \tt \rightarrow \: \cos(x) = \dfrac{ \sqrt{3} }{2}$

$\qquad \tt \rightarrow \: x = \cos {}^{ - 1} \bigg( \cfrac{ \sqrt{3} }{2} \bigg )$

$\qquad \tt \rightarrow \: x = 30 \degree \: \: or \: \: \cfrac{ \pi}{6} \: \: rad$

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

8 0

2 years ago

Read 2 more answers

A trough of water is 20 meters in length and its ends are in the shape of an isosceles triangle whose width is 7 meters and heig

Vaselesa [24]

Answer:

a) Depth changing rate of change is $0.24m/min$ , When the water is 6 meters deep

b) The width of the top of the water is changing at a rate of $0.17m/min$ , When the water is 6 meters deep

Step-by-step explanation:

As we can see in the attachment part II, there are similar triangles, so we have the following relation between them $\frac{3.5}{10} =\frac{a}{h}$ , then $a=0.35h$ .

a) As we have that volume is $V=\frac{1}{2} 2ahL=ahL$ , then $V=(0.35h^{2})L$ , so we can derivate it $\frac{dV}{dt}=2(0.35h)L\frac{dh}{dt}$ due to the chain rule, then we clean this expression for $\frac{dh}{dt}=\frac{1}{0.7hL}\frac{dV}{dt}$ and compute with the knowns $\frac{dh}{dt}=\frac{1}{0.7(6m)(20m)}2m^{3}/min=0.24m/min$ , is the depth changing rate of change when the water is 6 meters deep.

b) As the width of the top is $2a=0.7h$ , we can derivate it and obtain $\frac{da}{dt}=0.7\frac{dh}{dt} =0.7*0.24m/min=0.17m/min$ The width of the top of the water is changing, When the water is 6 meters deep at this rate