can someone help me in solving this with explanation please.. i really need it and i will be so thankful

Answer:

a=126

Step-by-step explanation:

Answer:

h = 5.42

r = 5.42

Step-by-step explanation:

Find h with respect to r:

V = πr²h = 500

h = 500/πr²

Plug this into the surface area equation:

SA = πr² + 2πrh

= πr² + 2πr(500/πr²)

= πr² + 1000/r

Differentiate and set to 0, solve for r:

dSA/dr = 2πr - 1000/r² = 0

2πr = 1000/r²

r³ = 500/π

r = (500/π)^1/3

≈ 5.42 cm

find h:

h = 500/πr²

= 500/[π(5.42)²]

= 5.42cm

Answer:

Commutative property: states that the order in which we multiply numbers does not change the product.

Associative property: states that you can add or multiply regardless of how the numbers are grouped (aka parenthesis).

9514 1404 393

Answer:

  (1, 2)

  (0, 1)

Step-by-step explanation:

The function tells you the second number of the pair will be one more than the first number of the pair. That is, the pair will be ...

  (x, 1+x)

Appropriate choices are ...

  (1, 2)

  (0, 1)

Answer:

1872.07

Step-by-step explanation:

The hundredth place is the second digit after the decimal (.).

The 1872 will always be the same since it is hundredth and not something else like tens or hundreds.

1872....

So since the hundredth place is the second digit after the decimal, you can find that the second digit is 7.

4 or less don't round up, 5 or more round up

Since the next digit is 2, it is 4 or less, so don't round up, so you cut off the 2, hence the 1872.07

EDIT: Aha I need my sense of humor back... brb

Answer: 1872.07

Step-by-step explanation: 7 is in hundredth place so we take the number that comes after it and round up or down since it 2 we round down to 0 then add it to 7.

7+0= 7 so 7 stays the same (because numbers from 1-4 round to zero and numbers from 5/9 round to 1)

Answer:

Step-by-step explanation:

( - ∞, - 7), (-3, 5)

Answer:13 hours

Step-by-step explanation:if you get paid your allowance then wrok for 13 hours-13x5=65+10=75

Answer:

40

Step-by-step explanation:

4/5 * q = 32

First you divide 4/5 by itself so you can eliminate it from the equation and then you have to divide 32 by 4/5 n when you do that you get 40. So q = 40.

Answer:

Step-by-step explanation:

196*36%=70.56 feet

He rounded the percent to 40% and the number to 200.

Answer:

He rounded the percent up to 40% and the number up to 200.

Step-by-step explanation:

I got it right on my test

Let r be the mass of a red disc and b the mass of a blue disc.

7 blues have the same mass as 1 red along with a 5 kg mass, so

7b = r + 5

7b - r = 5

2 blues and 1 red have the same mass as a 4 kg mass, so

2b + r = 4

Solve for b and r . Notice that adding the equations together eliminates r :

(7b - r) + (2b + r) = 5 + 4

9b = 9

b = 1

Then

7 • 1 - r = 5

r = 7 - 5

r = 2

So each red disc has a mass of 2 kg, and each blue disc has a mass of 1 kg.

Answer:

20 total flowers

Step-by-step explanation:

9+6=15.

20/4=5

5*3=15

The answer is 20 total flowers.

Answer:

Definitely not a function.

Step-by-step explanation:

Answer:

Not a function.

Step-by-step explanation:

Its not a function because there are two outputs (i.e. when you draw a vertical line in the diagram, you cross over the curve to times)

A function has ONLY ONE INPUT AND OUTPUT.

Answer:

What caused the differences in their behavior? The food coloring in cool water remained at the bottom of the container. ... The behavior of the food coloring was caused by the movement of heat through the water and the formation of convection currents. The warmer water is less dense, so it rises to the surface.

Step-by-step explanation:

Answer:

10 - .65r

Step-by-step explanation:

you just have to combine like terms, in this case the whole numbers. 7 + 3 = 10 so yup

Answer:

i got A but im not sure if its correct

Answer:

Step-by-step explanation:

x+5=0

x=-5

-5) 16   80   1    5

  |       -80   0  -5

 ____________

  | 16    0    1  | 0

quotient=16x²+1

Remainder=0

Answer:

55% are women

Step-by-step explanation:

27÷60= 0.45

0.45x100=45

100-45=55

45% men

55% women

There are 55% are women if the manufacturing plant has 60 supervisors. If 27 of the supervisors are men, option third is correct.

It is defined as the ratio of two numbers expressed in the fraction of 100 parts. It is the measure to compare two data, the % sign is used to express the percentage.

We have:

A manufacturing plant has 60 supervisors. If 27 of the supervisors are men.

The number of women = 60 – 27 = 33

The percent of women = (33/60)×100

= 0.55×100

= 55%

Thus, there are 55% are women if the manufacturing plant has 60 supervisors. If 27 of the supervisors are men, option third is correct.

Learn more about the percentage here:

brainly.com/question/8011401

#SPJ2

Answer:

2:1

Step-by-step explanation:

2:3=1:3

as product of extremes = product of means

(2)(3):(1)(3)

6:3

2:1

Step-by-step explanation:

y²-y¹/x²-x¹

(-15)-(12)/4-(-2)

-3/6

=-0.5

y=mx+b

12=-0.5(-2)+b

12=1+b

12-1=b

11=b

The equation of a line is given by:

y = mx + c

where m is the slope of the line and c is the y-intercept.

The slope of the line that passes through the points (-2, 12) and (4, -15) is -27/6

The y-intercept of the line that passes through the points (-2, 12) and (4, -15) is 3

The equation of a line is given by:

y = mx + c

where m is the slope of the line and c is the y-intercept.

Example:

The slope of the line y = 2x + 3 is 2.

The slope of a line that passes through (1, 2) and (2, 3) is 1.

We have,

The equation of a line is y = mx + c.

The slope can be calculated.

Slope = (d - b) / )(c - a)

Where (a, b) and (c, d) are the two points on the line.

The line passes through (-2, 12) and (4, -15)
This means,

Slope = (-15 - 12) / (4 + 2) = -27 / 6

m = -27/6

The line passes through the point (-2, 12).

12 = -27/6 x -2 + c

12 = 9 + c

c = 12 - 9

c = 3

Thus,

The slope of the line that passes through the points (-2, 12) and (4, -15) is -27/6

The y-intercept of the line that passes through the points (-2, 12) and (4, -15) is 3

Learn more about equation of a line here:

https://brainly.com/question/23087740

#SPJ5

Factor the expression

3−2−52+5+6=0

Answer:

           -3/10

Step-by-step explanation:

  -4--1= -3

     5--5= 10

Answer:

x = 2

Step-by-step explanation:

f(x) = x + 8

f(x) = 10

10 = x + 8

minus 8 from the both sides

10 - 8 = x

2 = x

x = 2

Answer:

d Geometric sequence; common ratio is −2

Step-by-step explanation:

Identifying Sequences

There are two possible types of sequences to choose from, Arithmetic and Geometric.

The arithmetic sequences are identified because each term is obtained by adding or subtracting a fixed number to the previous term. This number is called the common difference.

In the geometric sequences, each term is found by multiplying (or dividing) the previous term by a fixed number, called the common ratio.

The given sequence is:

48, -96, 192, -384, 768,....

To identify the type of sequence, we could try subtracting the second term from the first, the third from the second, etc. If those differences were constant, it would be an arithmetic sequence.

In this case, it's not necessary because the sign of the terms is alternating. It can only be possible with geometric sequences with a negative common ratio.

Dividing the second by the first term:

r = -96 / 48 = -2

Dividing the third by the second term:

r = 192 / -96 = -2

The rest of the divisions of successive terms lead to the same common ratio, thus, the answer is:

d  Geometric sequence; common ratio is −2

Answer:

Distance=Speed×Time

When speed is 40 kmph

Distance traveled by car =40×9

                                         =360 km

When speed is 60 kmph

Time taken to complete the journey =  

60

360

​  

                                                            =6 hours

Answer:

270 ÷ 6 = 45

45 x 6 = 270

45 x 9 = 405

The answer is 405

Hope it helped❤️

Answer:

hi

Step-by-step explanation:

1+1=2

Answer:

Slope = -1

Step-by-step explanation:

Brainlist please

Answer:

Step-by-step explanation:

Once you have two points, you can describe the line with:

[tex]y = mx + b \\where\\\\m = \frac{y_2-y_1}{x_2-x_1}[/tex]

our two points are (-2, 3) and (3, -2)

calculate m:

[tex]m = \frac{3-(-2)}{-2-3} = \frac{5}{-5} = -1[/tex]

the slope is negative

Answer:

0.72

i got it wrng and this was the correct answer

Step-by-step explanation:

Answer:

there are 3600 seconds in one hour