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Natasha_Volkova [10]
3 years ago
8

Is 5/18 a rational number ?

Mathematics
1 answer:
pentagon [3]3 years ago
4 0

Answer:

5/18 is a rational number because a rational number is any integer,fraction terminating decimal,or repeating decimal.

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nadya68 [22]

Answer:

1. Area=225 m2, 2. Carpet required is 225m2. 3. Cost= Rs 18000

Step-by-step explanation:

1.  Area=l*l=15*15=225 m2

2. Carpet has to be 225m2 in order to cover the floor

3. Cost= 225*80=18000

6 0
3 years ago
Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line. y = 8 sin(x
V125BC [204]

Answer with explanation:

The equation of two curves are

y=8 sin x

y=8 cos x

The point of intersection of two curves are

→8 sin x=8 cos x

sinx = cos x

x=\frac{\pi}{4}\\\\y=8\sin\frac{\pi}{4}\\\\y=4\sqrt{2}

When you will look between points , 0 and x=\frac{\pi}{4}\\\\y=8\sin\frac{\pi}{4}\\\\y=4\sqrt{2},the curve obtained is right angled triangle.

Now, rotate the curve that is right angled triangle along the line , y= -1, to obtain a shape similar or resembling with Right triangular prism.

Draw a circular disc in the right triangular prism , having radius =x,and small part on the triangle having length dx.dx varies from 0 to \frac{\pi}{4}.

Required volume of solid obtained

    =\int\limits^{\frac{\pi}{4}}_0 {8 \sin x} \, dx \\\\=|-8\cos x|\left \{ {{x=\frac{\pi}{4}}} \atop {x=0}} \right.\\\\=8-4\sqrt{2}

    =8-4√2 cubic units    

5 0
3 years ago
What is 22% of 45<br><br><br><br> what is 32.5% of 250
antoniya [11.8K]

Answer:

22%*45=

(22:100)*45 =

(22*45):100 =

990:100 = 9.9

32.5%*250=

(32.5:100)*250 =

(32.5*250):100 =

8125:100 = 81.25

7 0
2 years ago
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What is the slope of the line that passes through the points (-2,8) and (-22,8)
Vanyuwa [196]

Answer: m = 0

Step-by-step explanation:

6 0
3 years ago
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In order to get an A in science, Jack must get at least a 92% on his next test. If test has 30 questions,what is the minimum num
Neko [114]
Jack must score 28 problems correct. To get a 92% he must answer 92% of the 30 questions right. which means 0.92*30=27.6, but it is not possible to score 0.6 of a problem right so you would round to 28, which guarantees Jack scores a 92 because if we round down, Jack would score less than a 92
7 0
3 years ago
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