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vladimir1956 [14]
2 years ago
9

The volume Vr (in cubic meters) of a spherical balloon with radius r meters is given by =Vr43πr3. The radius Wt (in meters) afte

r t seconds is given by =Wt+7t3. Write a formula for the volume Mt (in cubic meters) of the balloon after t seconds. It is not necessary to simplify.
Mathematics
1 answer:
Arte-miy333 [17]2 years ago
7 0

Answer:

M_t=\frac{1372}{27}\pi t^9

Step-by-step explanation:

We are given that Volume of spherical balloon in cubic meters

V_r=\frac{4}{3}\pir^3

We have to find the value of volume of the balloon after t seconds.

We are given that radius of spherical balloon after t seconds

W_t=7t^3

Substitute the value then we get

M_t=\frac{4}{3}\pi(7t^3)^3

M_t=\frac{1372}{27}\pi t^9

Hence, the volume of spherical balloon is given by the formula

M_t=\frac{1372}{27}\pi t^9

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In a basketball tournament, Team A scored 5 fewer than twice as many points as Team B. Team C scored 80 more points than Team B.
nekit [7.7K]

Answer:

(2b - 5) + b + (b + 80) = 983

Step-by-step explanation:

Given that,

Total score of three teams = 983

Since the teams' scores are given in reference to team B's score, let 'b' be the score of team B.

So,

The scores of Team A = (2 * b) - 5

The scores of Team B = b

The scores of Team C = (b + 80)

Thus,

The equation for determining the total points of Team B would be:

(2b - 5) + b + (b + 80) = 983

On solving,

(2b - 5) + b + (b + 80) = 983

⇒ 2b + b + b = 983 + 5 - 80

⇒ 4b = 908

⇒ b = 908 ÷ 4

⇒ b = 227

Team B's score = 227

Team A's score = (2 * 227 - 5)

= 449

Team C's score = 227 + 80

= 307

Total ⇒ 449 + 227 + 307 = 983

Hence proved.

6 0
2 years ago
Which of the number(s) below are potential roots of the function? p(x) = x4 + 22x2 – 16x – 12
Neporo4naja [7]

Complete question is;

Which of the number(s) below are potential roots of the function? p(x) = x⁴ + 22x² – 16x – 12

A) ±6

B) ±1

C) ±3

D) ±8

Answer:

Options A, B & C: ±6, ±1, ±3

Step-by-step explanation:

We are given the polynomial;

p(x) = x⁴ + 22x² – 16x – 12

Now, the potential roots will be all the rational numbers equivalent of p/q.

Where;

p are the factors of the constant term of the polynomial

q are the factors of the leading coefficient of the polynomial

Now, in the given polynomial, the constant term is seen as -12 while leading coefficient is 1 which is the coefficient of x⁴.

We know that factors of 12 are any of:

±1, ±2, ±3, ±4, ±6 and ±12

While possible factors of 1 is just ±1.

Thus, all the potential roots of the polynomial function are;

±1, ±2, ±3, ±4, ±6 and ±12

From the options given, option A, B & C could be the potential roots.

6 0
2 years ago
Which sequences are arithmetic? Select three options.
ArbitrLikvidat [17]

Answer:

-6.2, -3.1, -1.55, -0.775, -0.3875...this is not an arithmetic sequence

Step-by-step explanation:

9 0
2 years ago
Read 2 more answers
In order for a constitutional amendment to the Florida constitution to pass 60% of the popular vote must support the amendment.
max2010maxim [7]

Answer:

H_{0}: p \leq 0.6\\H_A: p > 0.6

Step-by-step explanation:

We are given the following in the question:

Percentage of vote required for constitutional amendment = 60%

p = 60% = 0.6

Hypothesis:

More than sixty percent of the voters would support a new amendment about higher education.

We design the null and the alternate hypothesis  

H_{0}: p \leq 0.6\\H_A: p > 0.6

Interpretation:

The null hypothesis states that less than or equal to 60% of the voter support the new amendment and the alternative hypothesis states that gretaer than 60% supports the amendment about higher education.

4 0
2 years ago
Which graph represents f(x)=
Leona [35]

Answer:


Step-by-step explanation:


There are 3 graphs

Graph B:

f(x) = 9, -5<x<5

Symmetrical about x =0

To the right of x = 5, Passes through (5,9) and (15,30)

Use two point formula

y-9/(30-9) = x-5/(15-5)  or 21(x-5) = 10(y-9)

21(x-5) = 10(y-9)

because of symmetry about x =0, we get

equation as

f(x) = 2.1(x-5|)+90, for |x|>5

     =9, for |x|<5


Graph C is symmetric about x =-5

Hence the equation has an |x+5| in it

Because both sides straight line, right line passes through (-5,0) and (0,5) and hence right equation is x/-5 +y/5 =1

Or x-y = -5

Or y =x+5

Left side line is y = -x-5

Put together y = f(x) = |x+5| for graph C

iii) GraphD:

Graph D has 3 different lines.  Between 4 and t f(x) = 1

For x<4, Line passes through (3,3) and (4,1)

Using two point formula, y-3/(1-3) = x-3/(4-3)

Or -2x+6 = y-3 or 2x+y =9, for x <=4

For x>=4, line passes through (5,1) and (6,3)

Equation is (y-1)/(3-1) = (x-5)/(6-5) Or 2x-10 =y-1

2x-y =9

Together we can write f(x) as

y = |2x+9|,for x<=4 and x>=5

  = 1, for 4<x<5



7 0
2 years ago
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