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pogonyaev
3 years ago
9

What is the unknown number for t

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
3 0
This could be wrong but the answer should be 4
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Marvin has a vintage comic book worth $351. According to a dealer, the value of this particular comic book will increase by 12.1
White raven [17]
Y = 12.1% x 13 + 351
y= 0.012 x 13 + 351
y= 1.573 + 351
y= 352.573 or $352.6
3 0
2 years ago
Let V be the volume of the solid obtained by rotating about the y-axis the region bounded y = 4x and y = x2/4 . Find V by slicin
aliya0001 [1]

Answer:

Step-by-step explanation:

Consider the graphs of the y = 4x  and  y = \frac{x^{2} }{4}.

By equating the expressions, the intersection points of the graphs can be found and in this way delimit the area that will rotate around the Y axis.

4x = \frac{x^{2} }{4} \\   x^{2}  = 16x \\ x^{2}  - 16x = 0 \\   x(x-16) = 0 then x=0  o  x=16. Therefore the integration limits are:

y = 4(0) = 0  and  y = 4(16) = 64

The inverse functions are given by:

x = 2 \sqrt{y}  and  x = \frac{y}{4}. Then

The volume of the solid of revolution is given by:

\int\limits^{64}_ {0} \, [2\sqrt{y} - \frac{y}{4}]^{2}  dy = \int\limits^{64}_ {0} \, [4y - y^{3/2} + \frac{y^{2}}{16} ]\  dy = [2y^{2} - \frac{2}{5}y^{5/2} + \frac{y^{3}}{48} ]\limits^{64}_ {0} = 546.133 u^{2}

6 0
3 years ago
Line A goes through the points (1, 5) and (-1, 9). Line B goes through the points (0, 2) and (4, -6). Which of the following sta
Delvig [45]
B is correct. Explanation Below:
---
Line A never intersects Line B, as they are parallel lines-the slopes are the same-and parallel lines never intersect. 
Line A's Slope: (9-5)/(-1-1) = -2
Line B's Slope: (-6-2)/(4-0) = -2
---
Hope this helps!
7 0
3 years ago
Which of the following best describes the Constant Question 1 options: The number in a term before the variable. a letter that r
Serjik [45]

Constant is otherwise called term independent. It should not contain any other letters.

So, a constant without a variable best describes a constant.

5 0
3 years ago
The new athletic facility on the downtown campus measures 0.74 km by 4 km. How many square
masha68 [24]

Answer:

The sports facility is 2,960,000 sq. m   in area.

Step-by-step explanation:

The dimension of the sport facility = 0.74 km by 4 km

The Length of the facility = 4 km

The width of the facility = 0.74 km

Now, 1 km = 1000 meters

⇒ 4 km = 4 x (1000) = 4000 meters

and 0.74 km = 0.74 x (1000) = 740 meters

Now, AREA OF THE RECTANGLE = LENGTH x WIDTH

So, the area of the facility = 4000 m  x 740 km

                                         =  2,960,000 sq. m

Hence, the sports facility is 2,960,000 sq. m  in area.

7 0
3 years ago
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