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riadik2000 [5.3K]
3 years ago
7

Plzzz help me it would mean a lot I willl mark you brainliest if you are right plz and ty ​

Mathematics
2 answers:
emmasim [6.3K]3 years ago
8 0

Answer:

45

Step-by-step explanation:

x÷3=15

=×*1/3=15

=x=15*3

x=45

gayaneshka [121]3 years ago
6 0

Answer:

15 x 3 = 45

So, x = 45

Pls mark the brainliest :)

Step-by-step explanation:

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ben is filling up his cylinder shaped pool up to 80% of its capacity . If his is 6 feet deep and has a diameter of 18 feet, how
vlada-n [284]

Answer:

You will put 1220.83ft³ of water in the pool

Step-by-step explanation:

radius = half of diameter

d = 18ft

r = 18ft / 2 = 9ft

To calculate the volume of a cylinder we have to use the following formula:

v = volume

h = height = 6ft

π = 3.14

r = radius = 9ft

v = (π * r²) * h

we replace with the known values

v = (3.14 * (9ft)²) * 6ft

v = (3.14 * 81ft²) * 6ft

v = 254.34ft² * 6ft

v = 1526.04ft³

The volume of the cylinder is 1526.04ft³

If it is filled to 80% then we have to multiply the volume by 80/100

1526.04ft³  * 80/100 = 1220.83ft³

You will put 1220.83ft³ of water in the pool

5 0
3 years ago
Find the equation of the line specified. The slope is -7, and it passes through ( 5, -3).
Montano1993 [528]
The general equation of a line is
y= ax + b
where a is the slope
So a = -7
So y= -7x + b
But it passes through the point (5, -3)
Substitute the coordinates to calculate b:
So -3 = -7(5) + b
-3 = -35 + b
b= 35-3
b= 32
So the equation of the line of slope -7 and passing through the point (5, -3) is
y= -7x + 32
7 0
3 years ago
Read 2 more answers
A traffic officer is compiling information about the relationship between the hour or the day and the speed over the limit at wh
SpyIntel [72]

Answer:

The correlation between hour of the day and the speed over the limit at which the motorist is ticketed is weak positive correlation.

Step-by-step explanation:

The correlation coefficient is a statistical degree that computes the strength of the linear relationship amid the relative movements of the two variables (i.e. dependent and independent).It ranges from -1 to +1.

The types of correlation coefficient are:

  • +1 (-1) : Perfect positive (negative) correlation
  • 0 to 0.30(-0.30) : Weak positive (negative) correlation
  • 0.30(-0.30) to 0.70(-0.70) : Moderate positive (negative) correlation
  • 0.70(-0.70) to 1 (-1) :  Strong positive (negative) correlation

The correlation coefficient value between the hour of the day and the speed over the limit at which the motorist is ticketed is:

<em>r</em> = 0.12.

The value of <em>r</em> lies between:

0 < 0.12 < 0.30

Thus, the correlation between hour of the day and the speed over the limit at which the motorist is ticketed is weak positive correlation.

3 0
3 years ago
Based on the table of values below find the slope between points where x=2 and where x=6
kobusy [5.1K]
Slope=(12-4)/(2-6)=-2
7 0
3 years ago
Find the missing measure for a right circular cone given the following information. Find V if r = 2 and L.A. = 12. (16/3)√2 16√2
aksik [14]

Volume of cone is given by formula

V = \frac{\pi r^{2}h}{3}-------------------------------------------(1)

We are already given r =2, so we need to find h and then we can find volume

So missing meausre is height here ------------------------------------------------------------------------------

To find h we will use lateral area = 12\pi given

Formula for lateral area of cone is \pi r\sqrt{r^{2}+ h^{2}}

so we have12 = \pi r\sqrt{r^{2}+ h^{2}}

Now plug r as 2 in this equation

12 \pi = \pi (2)\sqrt{2^{2}+ h^{2}}

Now solve for h as shown and get h by itself

\frac{12\pi}{2\pi}  = \frac{2\pi\sqrt{4+h^{2}}}{2 \pi}

6  = \sqrt{4+h^{2}}

6^{2}   = \sqrt{4+h^{2}}  ^{2}

36}   = 4+h^{2}36 - 4    = 4+h^{2} -4

32  = h^{2}\sqrt{32} = \sqrt{h^{2}}

\sqrt{16 \times 2} = h\sqrt{16} \times \sqrt{2} = h

4\sqrt{2} = h----------------------------------------------------(2)

Now plug 2 in r place and 4\sqrt{2} in h place in volume formula given in (1)

V = \frac{\pi r^{2}h}{3}

V = \frac{\pi (2)^{2}4\sqrt{2}}{3}     [/tex][tex] V = \frac{\pi (4)4\sqrt{2}}{3}

V = \frac{16 \pi \sqrt{2}}{3}

so choice (1) is right answer

(1)  \frac{16 \sqrt{2}\pi}{3}

correct answer --------------------------------------------------------------------------------------------------

(2)  16 \sqrt{2} \pi

incorrect answer as correct volume answer we got as \frac{16 \sqrt{2}\pi}{3} --------------------------------------------------------------------------------------------------

(3)  4 \sqrt{38} \pi

incorrect answer as correct volume answer we got as \frac{16 \sqrt{2}\pi}{3} --------------------------------------------------------------------------------------------------------

6 0
3 years ago
Read 2 more answers
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