Helppppp plzzzzzzz!!!!!!!! 20+PTS and brainliest!!!!!!!!!!!!!!!

Answer: Fourth Choice. xy + 17x + 6

Step-by-step explanation:

Given

12xy + 20x - 9 - 11xy - 3x + 15

Put like terms together

=12xy - 11xy + 20x - 3x + 15 - 9

Combine like terms through addition/subtraction

=xy + 17x + 6

Hope this helps!! :)

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Answer:

Devon is 50 and Sydney is 25

Step-by-step explanation:

We know that d + s = 75 and that Devon is two times Sydney's age. This can be represented by 2s + s = 75 (keep in mind that 2s = d). Simplify the equation.

3s = 75

s = 25

Now we can substitute this in the original equation.

d + 25 = 75

d = 50

Best of Luck~

Answer: Sydney=25 Devon=50

Step-by-step explanation:

Sydney's age is represented by x and since Devon is 2 times older (his/her) age would be represented as 2x. So added together would be 3x. So 3x=75. 75/3=25. So x=25 meaning that Sydney is 25 and Devons age is 50 as 25x2=50.

Answer:

B

Step-by-step explanation:

f(g(x)) = 6(x-8)+12 = 6x-36

f(g(6)) = 36-36 = 0

Answer:

0

Step-by-step explanation:

i took test and got in right and the person above me explained it perfectly :)

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Answer:

  (a)  $3.72

Step-by-step explanation:

The interest is found using the formula ...

  I = Prt

where P is the principal invested at rate r for t years. 3 months is 1/4 year, so the interest is ...

  I = $425×0.035×1/4 ≈ $3.72

Yousef earns $3.72 after 3 months.

The value of product will be;

⇒ 16.926

To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

Given that;

The expression is,

⇒ 1.3 (- 3.1) (4.2)

Now,

Since, The expression is,

⇒ 1.3 (- 3.1) (4.2)

After product, we get;

⇒ 1.3 × (- 3.1) × (4.2)

⇒ 4.03 × 4.2

⇒ 16.926

Thus, The value is = 16.926

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Answer:

17.23

Step-by-step explanation:

Find the cost of the cupcakes

8* 1.59= 12.72

Find the cost of the pies

5*5.99 =29.95

Subtract the cost of the cupcakes from the pies

29.95-12.72=17.23

Answer:

Money spent more on pies than cupcakes = $17.23

Step-by-step explanation:

1 cupcake = $ 1.59

8 cupcakes = 8 * $ 1.59

8 cupcakes = $12.72

1 pie = $5.99

5 pies = 5 * $5.99

5 pies = $29.95

Money spent more on pies than cupcakes = Pies - Cupcakes

Money spent more on pies than cupcakes = $29.95 - $12.72

Money spent more on pies than cupcakes = $17.23

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

x = –2/3 or –20/9

Step-by-step explanation:

(9x+13)² = 49

Finding the square root of both sides

9x+13 = √49

9x+13 = ±7

Subtracting 13 from both sides

9x = 7 – 13 or 9x = -7 –13

9x = –6 or 9x = –20

Divide both sides by 9

x = –6/9 or x = –20/9

Simplifying

x = – 2/3 or x = –20/9

Answer:

Negative.

Step-by-step explanation:

Negative because there are an odd number of negatives.

For Example:

3 negatives:

- * - * -

= + * -

=  -

Step-by-step explanation:

1. the table on the left is a function, with the formula : y = x²

2. the table on the right is also a function, indicated by the values of the input are different each others

Answer:

y-y1=slope (x-x1)

where x1=-5, y1=-7 and the slope=2÷5

we substitute for x and y

y-(-7)=2÷5{x-(-5)}

y+7=2÷5(x+5)

y+7=(2x+10)÷5 cross multiply

5y+35=2x+10 collect like terms

5y=2x+10-35

5y=2x-25 ......ans

Answer:

Step-by-step explanation:

1. C

2. A

3. B

4. A

5. D

6. C

7. A

8. C

9. B

10. D

Answer:

x=4

Step-by-step explanation:

Simplifying

-1(7 + -4x) = 9

(7 * -1 + -4x * -1) = 9

(-7 + 4x) = 9

Solving

-7 + 4x = 9

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '7' to each side of the equation.

-7 + 7 + 4x = 9 + 7

Combine like terms: -7 + 7 = 0

0 + 4x = 9 + 7

4x = 9 + 7

Combine like terms: 9 + 7 = 16

4x = 16

Divide each side by '4'.

x = 4

Answer:

x = 4

Step-by-step explanation:

-(7 - 4x) = 9             (Given)

-7 + 4x = 9              (Distributed)

-7 + 4x + 7 = 9 + 7  (Add 7 on both sides)

4x = 16                    (Simplify)

4x/4 = 16/4             (Divide 4 on both sides)

x = 4                       (Simplify)

Answer:

1) (f+g ) x = (x²-4)+ (x+2) = x²+ x –2

2) (f - g ) x = (x²-4) – (x+2) = (x²-4)+ ( -x - 2) = x²–x–6

3) (f × g ) x = (x²-4)(x+2) = x³+2x²– 4x – 8

4) (f / g) x = (x²-4) / (x+2) = x – 2

5) ( f + g ) 4 = (x²-4)+ (x+2) = ((4²)-4)+ (4+2) = ( 16–4) + (6) = 12+6 = 18

I hope I helped you^_^

Answer:

=

−

1

2

Step-by-step explanation:

1

1

1

2

=

−

1

1

\frac{11x}{12}=-11

1211x​=−11

1

2

⋅

1

1

1

2

=

1

2

(

−

1

1

)

Answer:

Step-by-step explanation:

3y = 5x -1

y = (5/3)x - ⅓

Slope of line is 5/3.

Slope of any parallel to the line is also 5/3.

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Answer:

  D. m∠C=63, b=28.1, c=25.1

Step-by-step explanation:

The angle sum relation tells you ...

  C = 180° -23° -94° = 63°

The law of sines tells you ...

  b/sin(B) = a/sin(A)

  b = sin(B)·a/sin(A) = sin(94°)·11/sin(23°) ≈ 28.084 ≈ 28.1

Similarly, ...

  c = sin(C)·11/sin(23°) = sin(63°)·28.15235 ≈ 25.084 ≈ 25.1

__

  C = 63, b = 28.1, c = 25.1

Answer:

Here's your answer: 6 units²

Answer:

4.00586

Step-by-step explanation:

yup. so ya.... 20 character reached I hope

Answer:

18 weeks

Step-by-step explanation:

14 songs / 7 weeks

2 songs per week

36 songs * 1 week/ 2 songs

36 /2 weeks

18 weeks

Answer:

X+Y= 8w²–7w +7

Step-by-step explanation:

X+Y= ( 7w²+4w-6 ) + (w²-11w+13)

X+Y= 8w²–7w +7

I hope I helped you^_^

Answer:

A = 4 units ^2

Step-by-step explanation:

The area of a triangle is

A = 1/2 bh where b is the length of the base and h is the height

A = 1/2 ( 4) (2)

A = 4 units ^2

Answer:

Answer : 4

Area of the triangle = 1/2 • b • h

2 × 2 = 4

.................

Answer: (1, -1) or x = 1, y = -1

Answer:

12)  3/5=534 students

13)  2151 kg

14)a)7.1 US$

   b)total=10.2 US$

Step-by-step explanation:

12)students who had lunch=2/5*890

                                            =356 students

 students who did not have lunch=5/5-2/5

                                                         =3/5*890

                                                        =534 students

14)a)4pens=180 cents

       2 books=5.3$

      total=7.1 US$

b)5 pens=225 cnets

   3 books=7.95 US$

  total=10.2 US$

10)ate=1 over 8

    remaining=8/8-1/8

                     =7/8

after six hours=7/8*2/5

                        =7 over 20

total ate=1/8+7/20

            =14+5 over 40

           =19 over 40

remaining=40 over 40 - 19 over 40

                =   21 over 40

to dog=21/40 *1/4

          =21 over 160

total=19 over 40 +21 over 160

        =152+21 over 160

         =173  over 160

Sorry I am stucked from here.

Answer:

Angle B=90 degrees

BA^C= 40 degrees

Step-by-step explanation:

Angle B=90 degrees (right angle =90 degrees)

90+50+BA^C=180

140+BA^C      =180

           BA^C=180-140

          BA^C= 40 degrees

Answer:

3 hours

Step-by-step explanation:

You find the LCM between 20 and 15, which is 5. This means that Kim and Tom are both biking at 5 miles per hour, meaning that to determine how much time Tom takes, you would do 15/5, which is 3 hours.

Time taken by Tom to get office is 3 hour

Given information:

Distance of office from Kim house = 20 km

Distance of office from Tom house = 15 km

Kim take 1 hour more

Find;

Time taken by Tom to get office

Computation:

Assume;

Time taken by Tom = a hour

So,

Time taken by Kim = (a + 1) hour

[tex]Speed = \frac{Distance}{Time}[/tex]

So,

[tex]\frac{20}{(a + 1)}=\frac{15}{a} \\\\20a = 15a + 15\\\\20a - 15a = 15\\\\5a = 15\\\\a = 3[/tex]

So,

Time taken by Tom = 3 hour

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Answer:

One of the factors is (x+ 2)

Step-by-step explanation:

[tex]6 {x}^{2} + 7x - 10 \\ = (6x - 5)(x + 2)[/tex]

another factor is (6x - 5)

Answer:

C

Step-by-step explanation:

is not a polynomial because it has a negative exponent.

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Answer:

 no

Step-by-step explanation:

Using only a straightedge, you cannot measure distance, so cannot ensure that any two distances are the same.

__

The points of interest are on the perpendicular bisector of AB, which can be constructed using a compass and straightedge. The straightedge alone is insufficient.

Answer:

7/16

Step-by-step explanation:

38 + 1/16 = 38.0625

38.0625 = 7/16