Pls help Evaluate (7-3) = 2

Answer:

add all the ones on the out side of that area dont do the ones on the inside show me whene done plz

Answer:

0.3

Step-by-step explanation:

Percent means 'per 100'. So, 30% means 30 per 100 or simply 30/100. If you divide 30 by 100, you get 0.3 (a decimal number). So, to convert from percent to decimal, simply divide by 100 and remove the '%' sign. There is a easy way to convert from percent to decimal: Just move the decimal point 2 places to the left.

Hope this helps :)

pls give brainliest :p

And let me know what you think of my pfp :0

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Answer:

0.026 m / min.

Step-by-step explanation:

Volume V = π7^2h

V = 49πh

dV/dh = 49π

Rate that the volume is increasing is 4 m3/min.

So dV/dt = 4

dV/dt = dh/dt * dV/dh

4 = dh/dt * 49π

dh/dt = 4/49π

= 0.026 m / min.

The required height of the water increase is given as 0.026 m/min.

Given that,
A cylindrical tank with a radius of 7 m is being filled with water at a rate of 4 m3/min, how fast is the height of the water increasing is to be determined

Volume is defined as the ratio of the mass of an object to its density.

Here,
The volume of the cylinder =πr²h
Substitute the value in the above formula
Volume V = π7²h
V = 49πh
V/h = 49π  - - - - - - - (1)

Rate of the filling the tank is given,

V/t = 4
V = 4t
Substitute this in equation 1

4t / h = 49π
h / t = 0.026 m/s.

Thus, the required height of the water increase is given as 0.026 m/min.

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Answer:

X = 3

Mode: 11median: 9

Step-by-step explanations

3x = 3*2 = 6

(6,7,8,8,9,10,11,11,11)/9 = 81/9 = 9

The value of X = 3

Mode: 11

Median: 9

The mean is the average value which can be calculated by dividing the sum of observations by the number of observations

Mean = Sum of observations/the number of observations

Median represents the middle value of the given data when arranged in a particular order.

Mode is that number that appears most frequently in the given set of data.

We are given that  the ages in years of members of group 8, 11, 8,10 ,6, 7, 3x ,11, 11 if the mean age is 9 years

3x = 3(2 )= 6

Mean = (6,7,8,8,9,10,11,11,11)/9

= 81/9

= 9

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Answer:

the desired element lies in the 3rd row and 1st column, and is 25.

Step-by-step explanation:

We are given a 3 by 3 matrix:  There are 3 rows and 3 columns.

The symbol a       represents the element of this matrix that lines in row m and column 1.  Thus, the desired element lies in the 3rd row and 1st column, and is 25.

                      mn

Answer:

40

Step-by-step explanation:

there are 9 cow for ever 8 horses

45 is 5 sets of 9 (45/5 = 9)

so to make this ratio equal you have to multiply the amount of horses by 5 too

8*5=40

40 horses

Answer:

22.5 (B)

Step-by-step explanation:

Answer:

-8, 3

Step-by-step explanation:

Reflections formula

Y-axis (-x, y)

X-axis (x, -y)

Answer:

   https://scratch.mit.edu/projects/580972810/

Step-by-step explanation:

This website is a link to a Scratch project. It's mine.

I made this because I couldn't do it on Brainly.

This is NOT a scam. I promise.

It will have a tiny purple ball which is the oringinal, and a green one which is the reflected.

Answer:

90 miles per hour

Step-by-step explanation:

Divide distance by time to get speed.

[tex]\frac{120}{80}[/tex]=1.5 miles per minute

60 minutes in an hour

1.5(60)=90 miles an hour

[tex]\\ \sf\longmapsto a+\dfrac{1}{a}=\sqrt{3}[/tex]

[tex]\\ \sf\longmapsto \left(a+\dfrac{1}{a}\right)^3=\sqrt{3}^3[/tex]

[tex]\\ \sf\longmapsto a^3+\dfrac{1}{a^3}+\dfrac{3a^2}{a}+\dfrac{3a}{a^2}=3\sqrt{3}[/tex]

[tex]\\ \sf\longmapsto a^3+\dfrac{1}{a^3}+3a+\dfrac{3}{a}=3\sqrt{3}[/tex]

[tex]\\ \sf\longmapsto a^3+\dfrac{1}{a^3}=3\sqrt{3}-3a-\dfrac{3}{a}[/tex]

[tex]\\ \sf\longmapsto a^3+\dfrac{1}{a^3}=3\left(\sqrt{3}-a-\dfrac{1}{a}\right)[/tex]

[tex]\\ \sf\longmapsto a^3+\dfrac{1}{a^3}=3(0)[/tex]

[tex]\\ \sf\longmapsto a^3+\dfrac{1}{a^3}=0[/tex]

Answer:

Tn=a+(n−1)d, where a= First term, d= Difference between terms ... (2)

Equating (1) and (2)

6n+5=a+(n−1)d

6n+5=a+nd−d ..... (3)

Equating n terms:6n=nd

d=6 ...... (4)

Substituting (4) in (3)

6n+5=a+6n−6

5=a−6

a=11 ..... (5)

Now

Sn=2n(2a+(n−1)d)

Sn=2n(a+Tn) ....... (6)

Substituting (1) and (5) in (6)

Sn=2n(11+6n+5) 

Sn=2n(16+6n) 

Sn=n(8+3n) 

Tn=a+(n−1)d, where a= First term, d= Difference between terms ... (2)

Equating (1) and (2)

6n+5=a+(n−1)d

6n+5=a+nd−d ..... (3)

Equating n terms:6n=nd

d=6 ...... (4)

Substituting (4) in (3)

6n+5=a+6n−6

5=a−6

a=11 ..... (5)

Now

Sn=2n(2a+(n−1)d)

Sn=2n(a+Tn) ....... (6)

Substituting (1) and (5) in (6)

Sn=2n(11+6n+5) 

Sn=2n(16+6n) 

Sn=n(8+3n) 

Tn=a+(n−1)d, where a= First term, d= Difference between terms ... (2)

Equating (1) and (2)

6n+5=a+(n−1)d

6n+5=a+nd−d ..... (3)

Equating n terms:6n=nd

d=6 ...... (4)

Substituting (4) in (3)

6n+5=a+6n−6

5=a−6

a=11 ..... (5)

Now

Sn=2n(2a+(n−1)d)

Sn=2n(a+Tn) ....... (6)

Substituting (1) and (5) in (6)

Sn=2n(11+6n+5) 

Sn=2n(16+6n) 

Sn=n(8+3n) 

Answer:

130 and 211

Step-by-step explanation:

15+17= 32

17+32=49

32+49=81

49+81=130

81+130=211

Answer:

130 and 211

Step-by-step explanation:

15,17,32,49,81 _ _

15+2=17+15=32+17=49+32=81

that mean 81+ 49=130

and 81+130= 211

Hence, the answer is 130 and 211.

Answer:

8 seeds

Step-by-step explanation:

16 = 32

4 = ?

16 ÷4 = 4

32 ÷ 4 = 8

Answer:

$20,960

Step-by-step explanation:

brainliest?

every 14 days you get payed only 10 dollars?

id say less then 1000

Answer:

X to the 4th power = 1440

Step-by-step explanation:

Answer:

About 333000 times

Step-by-step explanation:

[tex]\:\:\:\:\:\:\:\:\:\:\therefore\bf{x=3\:and\:y=1}[/tex]

Solution

[tex]\:\:\:\bf{(2^{x+y},\:3^{x-y})=(16,9)}[/tex]

[tex]\sf{Here,}[/tex]

[tex]\:\:\:\star\tt{\:\:2^{x+y}=16\:and\:3^{x-y}=9}[/tex]

[tex]\sf{Solving,}[/tex]

[tex]\:\:\:\implies\tt{\:\:2^{x+y}=16}[/tex]

[tex]\:\:\:\implies\tt{\:\:2^{x+y}=2^4}[/tex]

[tex]\:\:\:\implies\tt{\:\:x+y=4}[/tex]

[tex]\:\:\:\bf{\:\:x=4-y-----(i)}[/tex]

[tex]\sf{Solving,}[/tex]

[tex]\:\:\:\implies\tt{\:\:3^{x-y}=9}[/tex]

[tex]\:\:\:\implies\tt{\:\:3^{x-y}=3^2}[/tex]

[tex]\:\:\:\bf{\:\:x-y=2-----(ii)}[/tex]

[tex]\sf{Putting\:the\:value\:of\:(i)\:in\:(ii),}[/tex]

[tex]\:\:\:\implies\tt{\:\:4-y-y=2}[/tex]

[tex]\:\:\:\implies\tt{\:\:4-2y=2}[/tex]

[tex]\:\:\:\implies\tt{\:\:-2y=2-4}[/tex]

[tex]\:\:\:\implies\tt{\:\:\cancel{-}2y=\cancel{-}2}[/tex]

[tex]\:\:\:\implies\tt{\:\:y=\frac{\cancel{2}}{\cancel{2}}}[/tex]

[tex]\:\:\:\bf{\:\:y = 1}[/tex]

[tex]\sf{Putting\:y = 1\:in\:(i),}[/tex]

[tex]\:\:\:\implies\tt{\:\:x=4-1}[/tex]

[tex]\:\:\:\bf{\:\:x = 3}[/tex]

[tex]\:\:[/tex]

Answer:

48

Step-by-step explanation:

50 + 88= 132

in triangle abc,

132+L=180

L=48

Answer:

178g

Step-by-step explanation:

Answer:

5g-8

Step-by-step explanation:

i don't know

have a great day

Answer:

Step-by-step explanation:

12$ = original price (need to add 67% mark up)

12/100 = 0.12 = 1%

0.12 x 67 = $8.04 markup

12 + 8.04 = $20.04 is the correct selling price

the error was accidently not adding the markup ($8.04) to the original price

Answer:

x=20

Step-by-step explanation:

First find the common denominator

Combine fractions with common denominator

Multiply the numbers

and you should be able to do it if that point. Pretty straight forward :)

HOPE I HELPED!!

Answer:

x=20

Step-by-step explanation:

add 5 to both sides

x/20=-4+5

simplify -4+5 to

x/20=1

multiply sides by 20

x=1*20

so x=20

Answer:

7 units

Step-by-step explanation:

Answer:

x = 1; not extraneous

Step-by-step explanation:

Answer:

-10

Step-by-step explanation:

2x+6 = x-4

2x = x - 4 - 6

2x = x -10

2x -x = x-x - 10

x = -10

Please mark my answer as brainest

Answer:

x<-1

Step-by-step explanation:

-5(x-1)>10, distribute the -5

-5x+5>10, subtract 5 from both sides

-5x>5, divide by -5

x<-1

(When you divide an inequality by a negative, the sign flips)

Answer:

[tex]c = 0.3m + 5[/tex]

define the variables:

c is the cost and m is minutes

It costs $14

Step-by-step explanation:

[tex]c = 0.3m + 5[/tex]

To solve for cost substitute 30 in for m

[tex]c = 0.3(30) + 5[/tex]

multiply

[tex]c = 9 + 5[/tex]

add

[tex]c = 14[/tex]

Answer:

Step-by-step explanation:

The first step will always be to break it down into steps.

Nathan lifted 13 boxes, each weighing 12 lb more than Steven's boxes. Steven lifted 15.

The total weight of Nathan's boxes would be the weight of 1 box times 13, because he lifts a total of 13 boxes.

S is the weight of Steven's boxes.

Steven's box + 12 lb = the weight of one of Nathan's boxes.

Then, you would multiply that number by 13 to get your answer.

Therefore, the first option is correct.

13(s + 12)

number of boxes Nathan lifted(Steven's weight + the extra pounds)

Hope this helped!

Answer:

13(s + 12)

Step-by-step explanation: