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Tems11 [23]
4 years ago
12

Find the volume of a spere with radius of 7​

Mathematics
2 answers:
tigry1 [53]4 years ago
7 0

Answer:

Volume ≈1436.76

Step-by-step explanation:

give me brainliest

choli [55]4 years ago
6 0

Formula for volume of sphere V = 4/3 (Pi) r^3, where Pi ~ 3.14 and r is the radius = 7.

Therefore V = 4/3 * 3.14 * 7^3

= 4/3 * 3.14 * 343

= 4/3 * 1077.02

= 1,436.02667 cubic units

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How many real solutions does the equation 8x^2 − 10x + 15 = 0 have?
Nimfa-mama [501]

Answer:

The correct option is (A) No real solution.

Step-by-step explanation:

The expression provided is a quadratic equation.

8x^{2}-10x+15=0

The roots of a quadratic equation are:

x = \dfrac{ -b \pm \sqrt{b^2 - 4ac}}{ 2a }

Here,

a = 8

b = -10

c = 15

The conditions to determine real and complex roots are:

  • If b^{2}-4ac then the quadratic equation has two complex roots.
  • If b^{2}-4ac>0 then the quadratic equation has two real roots.

Compute the value of b^{2}-4ac as follows:

b^{2}-4ac=(-10)^{2}-(4\times 8\times15)\\\\

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The equation has two complex roots.

Thus, the correct option is (A).

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3 years ago
triangle rst is congruent with VST is shown. given Line st is the perpendicular bisector of line RV prove triangle rst is congru
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Answer:perpendicular bisector theorem

Step-by-step explanation:

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3 years ago
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True or False? A circle could be circumscribed about the quadrilateral below.
BlackZzzverrR [31]

Answer: false


Step-by-step explanation: the answer is false because suplimentary angled dont add up to 180


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Suppose we wish to test the null hypothesis mu is less than or equal to 47 versus the alternative hypothesis mu is greater than
a_sh-v [17]

Answer:

C. We have made a correct decision

Step-by-step explanation:

Hypotheses are:

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H_{a}: mu is greater than 47

Type I error happens when we reject the null hypothesis but the null hypothesis was true

Type II error happens when we fail to reject the null hypothesis but the null hypothesis was wrong.

In this example we concluded that <em>mu is greater than 47,</em> thus we reject the null hypothesis. Since true mean is 52, this conclusion is true. We have made a correct decision

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