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Answer:

21 glasses

Step-by-step explanation:

6 glasses in a bottle

3 x 6 = 18

3 glasses in half a bottle

18 + 3 = 21

Answer:

21 glasses

Step-by-step explanation:

let 'g' = glasses of water

create a proportion, glasses over bottles equals glasses over bottles

1 = g

1/6   7/2

cross-multiply:  1/6g = 7/2

cross-multiply:  2g = 42

g = 21

B = A–1, then A = B–1.​ This statement is true. The inverse of a matrix is unique, so if B is the inverse of A, then A must be the inverse of B.

An arrangement of integers in both columns and rows is known as a matrix. learns about matrices' components and dimensions and first presents them. A matrix is a rectangular grid with integers arranged in rows and columns.

The statements that are true about inverse matrices are:

Not all square matrices have inverses. A square matrix only has an inverse if its determinant is not equal to zero. If the determinant of a square matrix is zero, it is called a singular matrix and does not have an inverse.

If A and B are inverse matrices, then A and B must be square matrices. This is because only square matrices can have inverses.

The determinant of a singular matrix is equal to zero. This is because the determinant of a matrix is related to the linear independence of its columns or rows. A singular matrix has linearly dependent columns or rows, which means its determinant is zero.

If A and B are inverse matrices, then A + B = I. This is not necessarily true. In general, the sum of two inverse matrices is not necessarily the identity matrix.

If A and B are inverse matrices, then det(A) x det(B) = 1. This statement is almost true, but the correct statement is det(A) x det(B) = det(AB) = 1.

Any zero matrix does not have an inverse. This is because the determinant of a zero matrix is zero, and therefore it is singular and does not have an inverse.

If B = A–1, then A = B–1.​ This statement is true. The inverse of a matrix is unique, so if B is the inverse of A, then A must be the inverse of B.

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Answer: B,C,E,F,G

Step-by-step explanation:

Answer:

BC ≈ 19.4 cm

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos71° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{AB}{BC}[/tex] = [tex]\frac{6.3}{BC}[/tex] ( multiply both sides by BC )

BC × cos71° = 6.3 ( divide both sides by cos71° )

BC = [tex]\frac{6.3}{cos71}[/tex] ≈ 19.4 cm ( to 3 significant figures )

Answer:

Step-by-step explanation:

lets solve the inequality by adding like terms

-2x-5>0 ?

-2x>5

x>-5/2

Answer:

76 m

Step-by-step explanation:

If each side has a length of 19 m, then the perimeter is 19m*4 = 76 m

Answer:y=4 and the bottom is boundary point

Step-by-step explanation:

Answer:

y=4 and the bottom is boundary point

Step-by-step explanation:

Answer:

225.24099

Step-by-step explanation:

249.99(0.15) = 37.4985

249.99 - 37.4985 = 212.4915

212.4915(0.06) = 12.74949

212.4915 + 12.74949 = 225.24099

Answer:

92.5

Step-by-step explanation:

18.5

[tex] \frac{18.5}{100} \times 500 \\ \\ [/tex]

100 times 5 is 500

so 100 is cancelled and 500 becomes 5

therefore 18.5 times 5 is equal to 92.5

Answer:

92 1/2   or   92.5

Step-by-step explanation:

how to solve?

Put it into a percent proportion :D!

Percent proportion is is/of=%/100 or a/w=p/100

The a stands for "part"

and the w stands for "whole"

p stands for "percent"

Is/of=%/100 will help you figure it out if it's in a mathmatical sentence.

Since they did NOT give you what the "is" is, you put the variable "a"

a/   =

Next,

Since it said "of"

You put of underneath the unknown number "is" (a)

a/500=

Now put in the percent

a/500=18.5/100

Now cross multiply!

Then you should get 92.5!

HOPE THIS HELPS :DDD

Answer:

you would have 100 cats left

Answer: imma say A

Step-by-step explanation: sorry if wrong

Answer: P = 79 feet

Step-by-step explanation:

V = (l)(w)(h)

171,114 = (57)(38)(p)

171,114 = 2,166p —> multiply

79 = p —> divide both sides by 2,166

Answer:

Step-by-step explanation:

A=πr2=π·42≈50.26548in²

I hope it's help

Answer:

50.24

Step-by-step explanation: 1

C = 4 inches

4 in x 2 = 8

8 x 3.14 = 25.12

Step-by-step explanation: 2

C = 2 x 8 = 16

16 x 3.14 = 50.24

           ~Hope this helps!

      ~Hocus Pocus

Answer B stands For Base and h stands for Height

it's C because the floor area is 120 square feet and the walls are 8 feet so if you multiply 120 × 8 you get 960.

Answer:

370

13+10+30+100+100+100+7=370

Answer:

151

Step-by-step explanation:

38+45+2(34)=151

Answer:

3/5

Step-by-step explanation:

SOHCAHTOA

Cos- adjacent/hypotenuse

adjacent side: 3

hypotenuse: 5

adj/hyp: 3/5

Answer:

option 4 should be the correct answer

Answer:

38/1.50x4=101.33...

Step-by-step explanation:

Answer:

The answer is 8

Step-by-step explanation:

Answer:

3.5x + 2.50y = 1237.50

425 = x + y

Step-by-step explanation:

number of adult tickets: x

number of student tickets: y

3.5x + 2.50y = 1237.50

( value of adult ticket [3.50]* number of adult tickets [x]) + (value of student ticket [2.50] * number of student tickets [y]) = total value (1237.50)

425 = x + y

(number of adult tickets [x]) + (number of student tickets [y]) = total (425)

Answer:

25 acres

Step-by-step explanation:

25 acres  hope this helps

[tex] \boxed{ \sf{Area \: = 57 \: {cm}^{2} }}[/tex]

[tex] \boxed{ \sf{Perimeter = 34 \: cm}}[/tex]

See workings in the attached picture !

Hope I helped ! ツ

Have a wonderful day / night ! ♡

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Answer:

b, the y-intercept, is 1

Step-by-step explanation:

Compare the given y = 4x + 1 to

                                y = mx + b

We see immediately that b, the y-intercept, is 1.

Answer:

[tex](x-y)=\sqrt{5}[/tex]

Step-by-step explanation:

[tex]We\ are\ given\ that:\\x^2-y^2=15\\x+y=3 \sqrt{5}\\Now,\\We\ know\ that,\\If\ x\ and\ y\ are\ two\ real\ numbers,\\Then:\\(x+y)(x-y)=x^2-y^2\\Here,\\Substituting\ (x+y)=3\sqrt{5}\ in\ the\ LHS\ and\ (x^2-y^2)=15\ in\ the\ RHS,\\(x+y)(x-y)=x^2-y^2\\3\sqrt{5} (x-y)= 15\\Hence,\\(x-y)=\frac{15}{3\sqrt{5} } \\(x-y)=\frac{5*3}{3\sqrt{5} }\\(x-y)=\frac{5}{\sqrt{5} } [Cancelling\ 3\ from\ the\ numerator\ and\ denominator]\\(x-y)=\frac{\sqrt{5}*\sqrt{5} }{\sqrt{5} }\\(x-y)=\sqrt{5}[/tex]

Answer:

y - 7 = m(x + 3)

Step-by-step explanation:

Apply the point-slope formula:  y - k = m(x - h)

Then we have y - 7 = m(x + 3)

Step-by-step explanation:

[tex] \tt{ 1. \: \: 4 \frac{1}{9} + 1 \frac{1}{2}}[/tex]

⇢ [tex] \tt{ \frac{37}{9} + \frac{3}{2} }[/tex]

⇢ [tex] \tt{ \frac{37 \times 2 + 3 \times 9}{18} }[/tex]

⇢ [tex] \tt{ \frac{74 + 27}{18} }[/tex]

⇢ [tex] \tt{ \frac{101}{18}} [/tex]

⇢ [tex] \boxed{ \tt{5 \frac{11}{18}} }[/tex]

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

[tex] \tt{ \: 2. \: \: 4 \frac{1}{2} \div \frac{3}{5}}[/tex]

⇢ [tex] \tt{ \frac{9}{2} \times \frac{5}{3}} [/tex]

⇢ [tex] \tt{ \frac{9 \times 5}{2 \times 3}} [/tex]

⇢ [tex] \tt{ \frac{45}{6}} [/tex]

⇢ [tex] \boxed{ \tt{7 \frac{3}{6}} }[/tex]

Hope I helped ! ♡

Have a wonderful day / night ! ツ

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Answer:

3x^2(x+5)

Step-by-step explanation:

Answer:

Step-by-step explanation:

You want to reverse the algebra and solve for y. First you want to subtract the 'a' to both sides.

x - a = -2by^2

Divide by -1 on both sides

-x + a = 2by^2

Divide by 2b on both sides

(-x + a)/2b = y^2

Take the square root of both sides

[tex]\sqrt{(-x+a)/2b}=y[/tex]

Answer:

x=24

Step-by-step explanation:

tell me if you want the steps

Answer:

x=24

Step-by-step explanation: