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2 years ago

I need help what's the answer ?

Mathematics

1 answer:

AveGali [126]2 years ago

6 0

Answer:

i cant see image

Step-by-step explanation:

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Nasreen bought 3 m 20 cm cloth for her shirt and 2 m 5 cm cloth for her trouser. Find the total length of cloth bought by her.

tamaranim1 [39]

Answer:

8cm

Step-by-step explanation:

multiply

5 0

2 years ago

Interpret the interquartile range. Choose the correct answer below.

Zepler [3.9K]

The value 257.3 denotes the range of the middle 50% of all observations in the distribution.

Q1 = 271.8 ; Q2 = 387.9 ; Q3 = 529.1

The Interquartile range is the difference between the the upper quartile and Lower quartile ;

IQR = Q3 - Q1

IQR = 529.1 - 271.8 = 257.3

The value of Q3 depict the 75th percentile of the data

The value of Q1 depicts the 25th percentile of the data

The difference between (Q3 and Q1) ; is the (75th - 25th) = middle 50th percentile of the distribution.

Since the difference between the maximum and minimum value is the range, then 257.3 is the range of the middle 50% of all observations in the distribution.

Learn more :brainly.com/question/24582786

5 0

1 year ago

Can anyone explain those marked steps in case (iii)

Tema [17]

$\cos\dfrac{3x}2=\cos\left(\dfrac\pi2+\dfrac x2\right)$
$\implies \dfrac{3x}2=2n\pi+\dfrac\pi2+\dfrac x2$

follows from the fact that the cosine function is $2\pi$ -periodic, which means $\cos x=\cos(2\pi+x)$ . Roughly speaking, this is the same as saying that a point on a circle is the same as the point you get by completing a full revolution around the circle (i.e. add $2\pi$ to the original point's angle with respect to the horizontal axis).

If you make another complete revolution (so we're effectively adding $4\pi$ ) we get the same result: $\cos x=\cos(4\pi+x)$ . This is true for any number of complete revolutions, so that this pattern holds for any even multiple of $\pi$ added to the argument. Therefore $\cos x=\cos(2n\pi+x)$ for any integer $n$ .

Next, because $\cos(-x)=\cos x$ , it follows that $\cos x=\cos(2n\pi-x)$ is also true for any integer $n$ . So we have

$\implies \dfrac{3x}2=2n\pi\pm\left(\dfrac\pi2+\dfrac x2\right)$

The rest follows from considering either case and solving for $x$ .

5 0

2 years ago

I will give brainliest fast please I will give points please explain well

ANEK [815]

If the equal is 55x + 35y = 200

x: time-driven at 55 miles/hour

y: time-driven at 35 miles/hour

If the car spends 2.5 hours at 35 miles per hour, then it drove:

55x + 35(2.5) = 200

55x =35

y = 112.5

There the drive spent about 2.5-hour driving at 55 mph.

Hope it helps!

4 0

1 year ago

What average speed does he need to reach in his second round in order to attain the overall average speed of 60 mph required for

Dmitry_Shevchenko [17]

10 think about it it’s 60s and it’s in the ten’s place because 10,20,30,40,50, and 60

3 0

2 years ago