help me I don't understand this question

Cost of one disc = (cost of that # of discs) / (# of discs)

                           = $40 / 3 = $13.33 per disc

Part A

For this part, I'm assuming your teacher implies that we ignore the door, windows and rectangular opening. It seems like parts B and C cover this aspect.

There are 2 walls that are 20 feet by 10 feet. Each is 20*10 = 200 sq ft, so both opposite walls are 2*200 = 400 sq ft.

Then there are 2 more walls that are 15 ft by 10 ft. Each has area 15*10 = 150 sq ft, and doubles to 2*150 = 300 sq ft.

The total wall area (ignoring any openings/doors/windows/etc) is 400+300 = 700 sq ft.

Another way to get this answer is to find the perimeter of the floor rectangle to get 2(L+W) = 2(20+15) = 2(35) = 70. Then multiply this with the height of the room to get 70*10 = 700

Note: This ignores the windows/doors/any other opening

====================================================

Part B

Useful info to focus on:

There's no mention of a door (either front door or interior door to another room). Instead, your teacher talks about a rectangular opening which I'm assuming is the walkway to perhaps the kitchen and/or hallway or something. Though this rectangular opening might be part of or entirely the front door. It's not clear what your teacher means here. I'll just forget about the door part.

Fact1 and fact2 tell us we have 3+2 = 5 windows of 3 ft by 8 ft. Each window has area 3*8 = 24 sq ft. Five of them give 5*24 = 120 sq ft

Fact 3 says we have a rectangular opening of area 7*8 = 56 sq ft.

The total area of all items mentioned is 120+56 = 176 sq ft

====================================================

Part C

We subtract the results of the previous parts A and B

wall area to paint = A - B = 700 - 176 = 524 sq ft

We're told that "The cans of paint Kamrie will purchase cover 415 square feet." So we'll divide the total area over the area per can.

524/415 = 1.26265 which is approximate

Round up to the nearest whole number. We don't round down to 1 can because we'll come up short. Instead we round to 2 paint cans. Having extra leftover paint is handy in case Kamrie made a mistake somewhere.

For this entire problem, I'm ignoring the ceiling and focusing on the walls only.

Answer:

0.04578

Step-by-step explanation:

Hope this helps somewhat.

[tex][Hello,BrainlyUser][/tex]

Answer:

0.045

Step-by-step explanation:

  00.45

-----------------

5.46|0.25

        25

 -        0

------------------

       2  5

-            0

-----------------

      2   5   0

-                 0

--------------------

       2 5 0 0

-       2  1 8   4

------------------------

        3  1  6   0

-        2 7   3   0

-------------------------

            4    3   0

We then have the equations:

25 ÷ 546 = 0.045

and therefore:

0.25 ÷ 5.46 = 0.045

0.04578754578 Round to = 0.045 or 0.04

[CloudBreeze]

Answer:

[tex]392\:in^2[/tex]

Step-by-step explanation:

Hey there!

Surface area:

[tex]2(10)(6)+2(6)(6)+2(6)(4)+2[(10)(10)-(4)(6)][/tex]

[tex]= 392\:in^2[/tex]

~

Hope this helps!

Answer:

Z=0

Step-by-step explanation:

Answer:

12 larave

Step-by-step explanation:

41 - 29

If Leroy's total count is 41 larvae. The number of larvae n Leroy counted last week will be 12.

It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has basic four operators that are +, -, ×, and ÷.

It is given that, Leroy didn't count many larvae. This week, he counts 29 larvae on the milkweed. For both weeks, Leroy's total count is 41 larvae.

We have to apply the subtraction operation, subtraction is defined as the difference between two quantities. The application of subtraction can be used broadly in different applications to find or solve the problems such as finding differences between two quantities and many more.

Total count = count for this week + count for last week

41 = 29 + count for last week

count for last week = 41 - 29

count for last week = 12

Thus, If Leroy's total count is 41 larvae. The number of larvae n Leroy counted last week will be 12.

Learn more about the arithmetic operation here:

brainly.com/question/20595275

#SPJ5

Answer:

a) 8925, b)6872.25

Step-by-step explanation:

a) (8500)+(8500(5/100))=8925

b) (8925)-(8925(23/100))=6872.25

Answer:

C. 13, 26, 39

Step-by-step explanation:

13 is a prime number so the numbers must be 13 and 1. Thus, you are just listing the first multiples of 13.

Answer:

360 meters

Step-by-step explanation:

Hello!

Let's first convert 250 seconds to minutes.

Since 1 minute is 60 seconds:

The runner ran 1500 meters in 4 and 1/6 of a minute

Now we need to find the unit rate using this equation:    [tex]\frac{\text{x}}{\text{1 minute}} = \frac{1500}{4\frac{1}{6}}[/tex]

Cross multiply:

360 meters

Answer:

[tex]\displaystyle 360\:m./min.[/tex]

Step-by-step explanation:

When converting from a smaller unit to a bigger unit, use division, especially because you are converting from [tex]\displaystyle m/s[/tex]to [tex]\displaystyle m./min..[/tex]First, you divide 250 by 60 to get 4⅙ minutes. You will then divide 1500 by 4⅙ to get this:

[tex]\displaystyle 1500\:metres\:in\:4\frac{1}{6}\:minutes \\ \\ 360 = \frac{1500}{4\frac{1}{6}} \\ \\ \\ \boxed{360\:m./min.}[/tex]

I am joyous to assist you at any time.

Answer:

65 + 12.5v = m (M being free movie)

Step-by-step explanation:

65 for the original 65 poitns he gets for signing up, then if he gets 12.5 points for every movie he visits then you need to multiply 12.5 times the amount of movies he went to (v) so it would be 65 + 12.5v
v would need to be 11.6

If you do 210 - 65 thats 145, then you do 145 divided by 12.5 which would get you 11.6

Using the t-distribution, as we have the standard deviation for the sample, it is found that the the maximum error of estimate for the actual population mean for the height of Egyptian pyramids is of 47.01%.

The confidence interval is:

[tex]\overline{x} \pm t\frac{s}{\sqrt{n}}[/tex]

In which:

The margin of error is:

[tex]M = t\frac{s}{\sqrt{n}}[/tex]

The critical value, using a t-distribution calculator, for a two-tailed 80% confidence interval, with 125 - 1 = 124 df, is t = 1.2884.

The other parameters are: [tex]\mu = 460.7, s = 4.1, n = 125[/tex].

Hence, the margin of error is of:

[tex]M = t\frac{s}{\sqrt{n}}[/tex]

[tex]M = 1.2884\frac{4.1}{\sqrt{125}}[/tex]

[tex]M = 0.47[/tex]

Hence, the maximum error of estimate for the actual population mean for the height of Egyptian pyramids is of 47.01%.

More can be learned about the t-distribution at https://brainly.com/question/16162795

Answer:

= 78 R 6

Step-by-step explanation:

Answer:

Ok done. Thank to me :>

Answer:

Yes

Step-by-step explanation:

Since the value of 4 + 6 and 10 are equal, and they are being multiplied by the same number, (4 + 6) x 3 = 10 x 3.

Answer:

3 years

Step-by-step explanation:

p=750

i = 2%

si=45

si =ptr/100

45=750*0.02*t

t=3 years

Answer:

B,C,F

Step-by-step explanation:

obtuse means anything bigger the a 90° angel and acute means anything smaller smaller a 90°

Answer:

2nd angle (top middle)

3rd angle (top right)

6th angle (bottom right)

Step-by-step explanation:

90 degree angle is a right angle

Angles: 2,3, and 6 are all greater than a 90 degree angle.

Hope this helps!

Answer:

See below.

Step-by-step explanation:

The first one is linear. Linear tables have a pattern that can be found by subtracting the second value by the first.

9-5=4

13-9=4

The second one is exponential. Exponential tables have a pattern that can be found by dividing the second value by the first.

27/9=3

9/3=3

-hope it helps

Step-by-step explanation:

just apply the formula.

the circumference of a circle is

C = 2 × pi × r

r = radius = diameter / 2

in our case r = 9.5 cm (19/2)

so, the circumference is

C = 2 × pi × 9.5 = 19 × pi

Answer:

1) Translations is moving a figure up down left or right

2) Rotations is rotating a figure. The figure does not move left or right, it stays in the same places but is rotated

i sorry i dont know the third one, just search the internet and understand what it means then right it in your own words. this can also be a practice for ya! :) )

4) Reflections is reflecting a figure. You use a straight line to reflect the figure

btw i dont know how to use the graph but i hope this helps!

Step-by-step explanation:

1) Translations is moving a figure up down left or right

2) Rotations is rotating a figure. The figure does not move left or right, it stays in the same places but is rotated

(im sorry i dont know the third one, just search the internet and understand what it means then right it in your own words. this can also be a practice for ya! :) )

4) Reflections is reflecting a figure. You use a straight line to reflect the figure

Answer:

Y - 4 + x < 32

x + 4 + y < 32

Step-by-step explanation:

Y - 4 + x < 32

x + 4 + y < 32

Please let me know if any are wrong!

Have an amazing day!

PLS MARK BRAINLIEST!

Answer:

16 seconds

Step-by-step explanation:

So, we know that distance equals 100.

We also know that Dita covers 6.25 meters of this distance every second.

Since this is 6.25 PER second, we can write this as 6.25s, where s is seconds.

To find the seconds it takes to cover 100 meters in distance, we can write the following equation:

6.25s = 100

This makes sense, since the 100 meters in distance is equal to the rate of change in meters, times the seconds.

Now we just need to solve for s.

To do this, we must get s alone. We can do this by dividing 6.5 from both sides:

[tex]\frac{6.25}{6.25}s = \frac{100}{6.25}[/tex]  

     =

  s = 16

So this means the seconds it takes to go 100 meters is 16 seconds, your first answer option

hope this helps! :3

Answer:

16 seconds

Step-by-step explanation:

Answer:

35

Step-by-step explanation:

Here is the full steps:

Distribute

-7(x+10)=7(5-x)

-7x-70=7(5-x)

Distribute

-7x-70 = 35-7x            → Answer for the attachment "35"

Add 70  to both sides of the equation

-7x-70+70=-7x+35+70

Simplify

-7x=-7x+105

Add 7x  to both sides of the equation

-7x+7x=-7x+105+7x

0 = 105

[RevyBreeze]

__________________________________________________________
Hello! In this question, we will be plugging in values to fit the simplification process of the expression.
__________________________________________________________

Explanation:

We were given the expression: -7(x + 10) = 7(5 - x)

In order to simplify the expression, we would use the distributive property.

Solve:

-7(x + 10) = 7(5 - x)

Distribute the "7" to the terms inside the parenthesis (x + 10).

-7x + (-70) = 7(5 - x)

Distribute the other "7" to the terms inside the parenthesis (5 - x).

7x + (-70) = 35 - 7x

Since we are only looking for the values in the simplification process, the answer for the first box would be -70 and the second box would be 35.
__________________________________________________________
Answer:
1. -70

2. 35

__________________________________________________________

Answer:

[tex]\sf c = -4[/tex]  and  [tex]\sf b = -6[/tex]

Explanation:

using the formula: [tex]\sf x = \frac{ -b \pm \sqrt{b^2 - 4ac}}{2a}[/tex]

Here the a = 1

using the equation:

[tex]3 \pm\sqrt{13}= \frac{ -b \pm \sqrt{b^2 - 4(1)c}}{2(1)}[/tex]

[tex]6 \pm2\sqrt{13}= -b \pm \sqrt{b^2 - 4(1)c}}[/tex]

matching the coefficients: b = - 6

find c:

[tex]6 \pm2\sqrt{13}= -(-6) \pm \sqrt{(-6)^2 - 4(1)c}}[/tex]

[tex]6 \pm2\sqrt{13}= 6 \pm \sqrt{36 - 4c}}[/tex]

[tex]\sf 6 \pm\sqrt{52}= 6 \pm \sqrt{36 - 4c}}[/tex]

[tex]\sf 36-4c = 52[/tex]

[tex]\sf -4c = 52-36[/tex]

[tex]\sf -4x = 16[/tex]

[tex]\sf c = -4[/tex]

Explanation:

Replace x with 7 and simplify to get 8+x = 8+7 = 15

Answer:

If x=7, 8+7=15.

Step-by-step explanation:

x=7

8+(7)

=15

Answer:

25 030 009

Step-by-step explanation:

5003 x 5003 = 25030009

say the regular price is "x", which is the 100% of the value, and we know it's discounted by 40%, so that means 100% - 40% = 60%, and we know as well that that value is 1200, so.

[tex]\begin{array}{ccll} amount&\%\\ \cline{1-2} x&100\\ 1200&60 \end{array}\implies \cfrac{x}{1200}=\cfrac{100}{60}\implies \cfrac{x}{1200}=\cfrac{5}{3} \\\\\\ 3x=6000\implies x=\cfrac{6000}{3}\implies x=2000[/tex]

Answer:

x = 5

Step-by-step explanation:

I just solved the equation!

5 - 4(2-x) = 17

-4(2-x) = 12 (subtract by 5 on both sides)

2 - x = -3 (divide by 4 on both sides)

-x = -5 (subtract by 2 on both sides)

x = 5 (divide by -1 on both sides (two negatives cancel out!))

:)

Answer:

x = 5

Step-by-step explanation:

1) Subtract 5 from both sides.

-4(2-x)=17-5

2) Simplify 17 - 5 to 12.

-4(2-x)=12

3) Divide both sides by -4.

2-x=-12/4

4) Simplify 12/4 to 3.

2-x=-3

5) Subtract 2 from both sides.

-x=-3-2

6) Simplify - 3 - 2 to -5.

-x=-5

7) Multiply both sides by -1.

x = 5

Check the answer:

5-4(2-x)=17

1) Let x=5.

5-4*(2-5)=17

2) Simplify 2-5 to 3.

5-4*-3=17

3) Simplify 4 * -3 to -12.

5-(-12)=17

4) Remove parentheses.

5+12=17

5) Simplify 5 + 12 to 17.

17 = 17

All done !

Answer:

b = 6j

Step-by-step explanation:

b (number of biscuits) = 6j (6 biscuits per box)

[tex]\qquad \qquad\huge \underline{\boxed{\sf Answer}}[/tex]

In the given diagram, The shown angles form Linear pair. And according to that property the sum of measures of the two Angles equals to 180°

Now, let's use the equation to solve for x ~

[tex]\qquad \sf  \dashrightarrow \:( 13x + 6) + (29x + 6) = 180 \degree[/tex]

[tex]\qquad \sf  \dashrightarrow \: 13x + 6 + 29x + 6= 180 \degree[/tex]

[tex]\qquad \sf  \dashrightarrow \: 13x + 29x + 6 + 6= 180 \degree[/tex]

[tex]\qquad \sf  \dashrightarrow \: 42x + 12= 180 \degree[/tex]

[tex]\qquad \sf  \dashrightarrow \: 42x = 180 \degree - 12 \degree[/tex]

[tex]\qquad \sf  \dashrightarrow \: 42x = 168 \degree [/tex]

[tex]\qquad \sf  \dashrightarrow \: x = 168 \degree \div 42[/tex]

[tex]\qquad \sf  \dashrightarrow \: x = 4 \degree[/tex]

[tex]\fbox \colorbox{black}{ \colorbox{white}{x} \:  \:  \:   \:  \:  \:  \: \: \colorbox{white}{=}  \:  \:  \:  \:  \:   + \colorbox{white}{4 \degree}}[/tex]

The angles marked in the given diagram are forming a linear pair of angles, Which means that their sum will be 180°...~

[tex]\colorbox{lightyellow}{(13x + 6) + (29x + 6) = 180 \degree}[/tex]

Solve the equation for x ~

[tex] \rm \: 42x + 12 = 180[/tex]

[tex] \rm \: 42x = 180 - 12[/tex]

[tex] \rm \: 42x = 168[/tex]

[tex] \rm \: 42x \div 42 = 168 \div 42[/tex]

[tex] \rm \: x = 4[/tex]

[tex]\large{|\underline{\mathtt{\red{1}\blue{ ^{st} }\orange{ \: }\pink{a}\blue{n}\purple{g}\green{l}\red{e}\orange{ \curvearrowright}}}}[/tex]

[tex] \sf \: 13x + 6 \\ \sf \: 13 \times 4 + 6 \\ \sf \: ∠1 = 58 \degree[/tex]

[tex]\large{|\underline{\mathtt{\red{2}\blue{ ^{nd} }\orange{ \: }\pink{a}\blue{n}\purple{g}\green{l}\red{e}\orange{ \curvearrowright}}}}[/tex]

[tex] \sf \: 29x + 6 \\ \sf \: 29 \times 4 + 6 \\ \sf \: ∠2 = 122 \degree[/tex]