Find the multiplicative inverse of -13/19

Answer:

x= -1 y=3

Step-by-step explanation:

Answer:

x = -1

y = 3

Step-by-step explanation:

2x +y =1 3x -y= -6

Add the two equations together to eliminate y

2x +y =1

3x -y= -6

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

5x = -5

Divide by 5

5x/5 = -5/5

x = -1

2x+y = 1

2(-1) +y = 1

-2 +y =1

Add 2 to each side

y = 1+2

y =3

Answer:

Hi again, I'm here to answer!

The correct answers:

10. x = -7 2/3

11. x = 2

12. x = 3

Step-by-step explanation:

(x + 3)/2 = (x - 4)/5

(5x + 15)/10 = (2x - 8)/10

3x/10 = -23/10

x = -23/3

x = -7 2/3

(2x - 1)/3 = x/2

(4x - 2)/6 = 3x/6

x/6 = 2/6

x = 2

(3x + 1)/5 = 2x/3

(9x + 3)/15 = 10x/15

-x/15 = -3/15

x = 3

Hope this helped!

Answer:

A = 8

B = 6

C = 4

D = 7

Top = 29

Side = 20

Step-by-step explanation:

To get A on the bottom side row you divide 32 by 4 and get 8.

To get D, on the first side row, subtract A, 8, now it's 21, 21 divided by 3 is 7.

To get B, on the first top row, subtract A and D, now divide by 2 and you get 6.

To get C, on the third side row, subtract B and divide by 2 and you get 4.

9514 1404 393

Answer:

  n = 24

Step-by-step explanation:

Multiply the given equation by the product of denominators. Then subtract 6n and go from there.

  [tex]\dfrac{6}{n-6}=\dfrac{8}{n}\\\\6n=8(n-6)\qquad\text{rid of fractions}\\\\0=2n-48\qquad\text{subtract 6n, simplify}\\\\0=n-24\qquad\text{divide by 2}\\\\\boxed{24=n}\qquad\text{add 24}[/tex]

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Alternate solution

Any proportion can be written 4 ways. If we write this one "sideways," we have ...

  6/8 = (n -6)/n

  1 -1/4 = 1 -6/n . . . . . expand in parallel fashion

  6/n = 1/4 . . . . . . . . subtract 1, multiply by -1

  n = 24 . . . . . . . . . multiply by 4n

__

Another alternate solution (can be done mentally)

The above "sideways" proportion can be reduced to ...

  3/4 = (n -6)/n

The difference between values on the left is 1 unit. On the right, the difference between values is 6. (The numerator is 6 less than the denominator.) The denominator on the left (4) is 4 times the difference, so the denominator on the right (n) will likewise be 4 times the difference: n = 4·6 = 24. Check: 3/4 = 18/24.

Answer:

6 cm. and 14 cm.

Step-by-step explanation:

3x2=6

7x2=14

Answer:

2³x3²

Step-by-step explanation:

(2³x3⁶)/3⁴

2³x3⁶^-4

= 2³x3²

Answer:

Henry had 12 cans of Xtreme diet soda, if he drinks 2 sodas each hour and ends up with 8 cans at the end of the day, how many hours did he drink?

Step-by-step explanation:

12-2h=y

y=8 and your final amount

h = hrs and your variable

12 is your constant! he only has 12 cans, which cannot change

2 is your coefficient, but you can change it to whatever you want

If you need clarification let me know!

Answer:

An equation with -8 as the slope.

Step-by-step explanation:

I can't see your choices but you need to look for an equation in which the slope is -8. A line with an opposite reciprocal slope is needed in order to be perpendicular to the line y = 1/8x + 3. The opposite reciprocal of 1/8 is -8.

Answer:

x-5

x-2

Step-by-step explanation:

Questions 1:

√(x²-10x+25)

x²-10x+25= (x-5)²

√(x-5)²= x-5

question 2:

x²-4x+4= (x-2)²

√(x-2)²= x-2

Answer:

Answer: A

Step-by-step explanation:

X comes first then Y. so go right 2 since its positive, then go up 5 since its also a positive. then you get your answer

Step-by-step explanation:

A 2 (x horizontal line), 5 (y vertical line)

Answer:9 6/20

Step-by-step explanation:

add numerator and find lcf on denominator add whole number

Answer: 9 6/20

Hope that helps :)

Answer:

She buys 5 boxes of popcorn and 6 boxes of candy

Step-by-step explanation:

this is because 5 times 4.00 is 20$ and 2.50 times 6 is 15$

15 + 20 is 35

so your answer is 5 boxes of popcorn and 6 boxes of candy

hope this helped :D

Answer:

B

Step-by-step explanation:

If she spent 35$ and got 1 more candy and popcorn that only leaves a single option

Answer:

D. It is not linear because it does not have a constant rate of change.

Step-by-step explanation:

Given

See attachment for graph

Required

Linear or not? and why

Linear functions have constant slopes (i.e. constant rates of change)

The attached function is a curve, and curves do not have constant slope.

Hence, we can conclude that the function is not linear because it does not have a constant slope.

Answer:

11

Step-by-step explanation:

59*2= 118

118+75= 193

360-193=167

167+20=187

187/17 = 11

Answer:

c

Step-by-step explanation:

sjrbdjcktwnxjyjebssb3jsixjtebhwwu

Answer:

b = 2a

Step-by-step explanation:

Translation 5 units up is correct

Answer:

Perimeter = AB + AC + BC = 26.55 units

Step-by-step explanation:

The perimeter of a triangle is the sum of lengths of all sides.

Here we have a right triangle, right-angled at C

angle B = 46°

AB = 11

We continue to calculate

AC = (11)sin(46°) = 7.91

BC = (11)cos(46°) = 7.64

Perimeter = AB + AC + BC = 26.55 units

Answer:

The question seems incomplete, but this statement would be true for all x below 3 (you can put any number less than 3 in it and get a true statement)

Let the number missed = x

They made 6 times that amount which would be 6x

The total of missed and made is 308:

X + 6x = 308

Combine like terms

7x = 308

Divide both sides by 7

X = 44

They missed 44

Answer:

Step-by-step explanation:

take 60 degree as reference angle

using cos rule

cos 60=adjacent/hypotenuse

1/2=80/x(do cross multiplication)

80*2=x

160=x

Answer:

x = 160

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos60° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{CD}{CE}[/tex] = [tex]\frac{80}{x}[/tex] ( multiply both sides by x )

x × cos60° = 80 ( divide both sides by cos60° )

x = [tex]\frac{80}{cos60}[/tex] = 160

Answer:

1234567890-=

Step-by-step explanation:1234567890-

Answer:

hello

Step-by-step explanation:

-7t-1=20

-7t=20+1

-7t=21

t=21÷(-7)

t=-3

-7×(-3)-1=20

have a great dayyyy

Answer:

A

Step-by-step explanation:

-13m = -12

m = 12/13 = 0.92

step one it says Jasmine ran 22 km is approximately equal to 1.6 km in which measurement is closest to the number of miles Jasmine ran the correct answer is C

Answer:

Step-by-step explanation:

[tex]\frac{x+6}{x+7}-\frac{x+1}{x+2}=\frac{(x+6)*(x+2)}{(x+7)*(x+2)}-\frac{(x+1)(x+7)}{(x+2)(x+7)}\\\\[/tex]

USE FOIL method

(x +6)(x + 2) = x*x + x*2 +6*x +2*6

                  =x² + 2x + 6x + 12    {Combine like terms}

                  = x² + 8x + 12

(x+ 7)(x + 2) = x*x+ x*2 +7*x + 7*2

                  = x² +2x+ 7x + 14

                 = x² + 9x + 14

(x+1)*(x +7) = x*x + x *7 + 1*x + 1*7

                =x² + 7x +x + 7

                =x² + 8x + 7

[tex]\frac{x+6}{x+7}-\frac{x+1}{x+2}=\frac{(x+6)*(x+2)}{(x+7)*(x+2)}-\frac{(x+1)(x+7)}{(x+2)(x+7)}\\\\\\ =\frac{(x+6)*(x+2) - [(x+1)(x+7)]}{(x+2)(x+7)}\\\\\\= \frac{x^{2}+8x+12 -[x^{2}+8x+7]}{x^{2}+9x+14}\\\\\\=\frac{x^{2}+8x+12-x^{2}-8x-7}{x^{2}+9x+14}\\\\=\frac{5}{x^{2}+9x+14}\\\\\\\\\frac{x+6}{x+7}-\frac{x+1}{x+2}=\frac{1}{3x+1}\\\\\frac{5}{x^{2}+9x+14}=\frac{1}{3x+1}\\\\[/tex]

Cross multiply,

5*(3x+1) = x² + 9x + 14

5*3x + 5*1 = x² + 9x + 14

15x + 5 = x² + 9x + 14

x² + 9x + 14 - 5x - 5 = 0

x² + 9x - 5x + 14 - 5 = 0

Combine like terms

x² + 4x  + 9 = 0

a = 1 ; b = 4 ; c = 9

D = b² - 4ac

  = 4² - 4*1*9

  = 16 - 36

  = -20

  = 20i²    {i² = -1}

√D = √20i² = [tex]\sqrt{2*2*5*i*i}=2i\sqrt{5}[/tex]

[tex]x = \frac{-b+\sqrt{D}}{2a} \ or \frac{-b-\sqrt{D}}{2a}\\\\\\x= \frac{-4+2i\sqrt{5}}{2} \ or \frac{-4-2i\sqrt{5}}{2}\\\\x = \frac{2*(-2+i\sqrt{5})}{2} \ or \frac{2*(-2-i\sqrt{5}}{2}\\\\x = -2 +i\sqrt{5} \ or -2-i\sqrt{5}[/tex]

Answer:

8 x 8 = 64

64 x 6 = 384 ft^2 is your answer.

Answer:

384 Sq ft

Step-by-step explanation:

multipliy 8 by 8 to get the area of one side. then because it is a cube, and all the side lengths are the same, you can just multipliy the area of one face by the amount of faces total.

8×8=64

64×6=384

384 ft²

or

384 Sq ft

Answer:

10

Step-by-step explanation:

5(3r - 10)

Let r = 4

5(3*4 - 10)

5( 12 - 10)

5 (2)

10

Answer:

10

Step-by-step explanation:

5(3r-10)

5(3(4)-10)

so forget the 5 and solve inside first

3*4= 12

12-10= 2

now bring the 5 back and multiply

5*2= 10