The polynomial x3 4x2 â€"" 9x â€"" 36 has 4 terms. Use factoring by grouping to find the correct factorization. (x2 9)(x 4) (x2 â€"" 9)(x â€"" 4) (x2 9)(x â€"" 4) (x2 â€"" 9)(x 4).

Step-by-step explanation:

2x+3(3x+8)=13 y=3x+8

2x+9x+24=13 y=3(-1)+8

11x+24=13 y= -3+8 =8-3

11x=13-24 y=5

11x/11= -11/11

x= -1

Answer:

12.5 minutes

Step-by-step explanation:

it takes 5 minutes to cool 10 degrees

after ten minutes it would be 20 degrees less

then after 2.5 minutes it would be 5 degrees less

so it would take you 12.5 minutes to get 25 degrees less

We know that in 5 minutes, the temperature of the hot chocolate decreased by 10 degrees. We also know that the temperature is fixed at 70 degrees. Now, using the info given, let's solve!

Therefore, my little brother will have to wait for 12.5 minutes to drink his hot chocolate.

Hoped this helped.

[tex]BrainiacUser1357[/tex]

Answer:

7) r = -4

8) n = 1

9) x = 2

Step-by-step explanation:

Problem 7

Here, we have the equation 5 + 3r + 6 = -1. It looks like we need to solve for r, so let's go ahead and start by adding the constants 5 and 6.

5 + 3r + 6 = -1

3r + 11 = -1

Next, let's remove 11 from both sides to isolate r.

3r = -12

Finally, we can divide both sides by 3 to find the value of r.

r = -4

Problem 8

In this equation, it looks like we have to solve for n: -n + 2 + 3n = 4. So, let's start by combining like terms (-n and 3n).

-n + 3n + 2 = 4

2n + 2 = 4

Next, we can remove 2 from both sides to isolate r.

2n = 2

And finally, we can divide both sides by 2.

n = 1

Problem 5

This equation is a little trickier since we have a fraction. To remove this fraction, we can multiply both sides by 4.

(-6 + x)/4 = -1

4 × (-6 + x)/4 = 4 × -1

4/4 × (-6 + x)/1 = -4

-6 + x = -4

Finally, let's add 6 to both sides.

x = 2

Answer  

Step-by-step explanation:

In millions of people, since 1950

Answer:

whats the question??  lol

Step-by-step explanation:

Answer:

y-1=-4(x+5)

Step-by-step explanation:

y-y1=m(x-x1)

y-1=-4(x-(-5))

y-1=-4(x+5)

Answer: y - 1 = -4(x + 5)

Step-by-step explanation:

      The point-slope formula is y - [tex]y_1[/tex] = m(x - [tex]x_1[/tex]) where m is the slope and ( [tex]x_1[/tex], [tex]y_1[/tex]) is a point on the graph.

      Using the formula, we will plug in our known values to write our equation.

y - [tex]y_1[/tex] = m(x - [tex]x_1[/tex])

y - (1) = (-4)(x - (-5))

y - 1 = -4(x + 5)

        However, in the picture the slope is [tex]\frac{1}{4}[/tex], so we would write it as;

                      y - 1 = [tex]\frac{1}{4}[/tex](x + 5)

Answer: I might have done some of the math wrong but I think this is the answer.

Step-by-step explanation:

Jose would be able to save $16,400 including the $2,000 and he will need $166,000 in financial aid.

Answer:

34

Step-by-step explanation:

4(8.5) = 34

Answer:

b

Step-by-step explanation:

hope it helped u take a look at the picture u attached

Answer:

4/3 litres of water is enough to water 2/5 of the plants

Assuming the number of plants in the house is an unknown variable, take the value as x.

Thus, 4/3 litres is enough to water 2x plants in the house.

x = 4/3 ÷ 2

  = 2/3 litres

Amount of water for all the plants = 5x = 5 × 2/3

                                                                = 10/3 litres

Thus, 10/3 litres of water is necessary to water all the plants in the house.

Answer:

B  (the second number line)

Step-by-step explanation:

[tex]\sqrt{49}[/tex] = 7, so [tex]\sqrt{47}[/tex] would be close to 7

Answer: 17) 150°C 18) 17 minutes

Step-by-step explanation:

x represents time in minutes and y represents temperature in Celsius

17) y=10x+30

y=10(12)+30

y=120+30

y=150 - Therefore, the water temperature will be 150°C after 12 minutes

18) 200=10x+30

10x+30=200

10x+30-30=200-30

10x=170

x=17  - Therefore, the water temperature will reach 200°C after 17 minutes

Answer:

40%

Step-by-step explanation:

increased amount = 28 - 20 = 8

to get the percentage we have to divide the increased amount by original amount which will be 8/20 = 0.4

0.4 is 40%

The percentage increase is given as:

= [ (Final value - Initial value) / Initial value] x 100

The percentage increase in the number of individual packages is 40%

The percentage is calculated by dividing the required value by the total value and multiplying by 100.

Example:

Required percentage value = a

total value = b

Percentage = a/b x 100

We have,

Number of initial individuals packages = 20

Number of final individuals packages = 28

The percentage increase is given as:

= [ (Final value - Initial value) / Initial value] x 100

The percentage increase in the number of individual packages:

= [(28 - 20) / 20] x 100

= (8/20) x 100

= 40%

We can cross-check:

100% = 20 packages

140% = 140/100 x 20 packages

140% = 28 packages.

Thus,

The percentage increase in the number of individual packages is 40%

Learn more about percentages here:

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Answer: 9.75

Step-by-step explanation: i just added

Answer:

less

Step-by-step explanation:

Answer:

you need to divide all number

Answer:

The number is 42.

Hope you could get an idea from here.

Doubt clarification - use comment section.

Answer:

Given (-4,4),(0,2),(2,1),(4,-1)

Only any two points are on the same line.

Step-by-step explanation:

You could do a lot of calculations, write the equations for the points in the line. These would be very good. But, you could also just look at the points on a graph. See image.

Repost if there are different points in the original problem.

Answer:

there are 6.45 or 6.5 square cm in one square inch

Step-by-step explanation:

Answer: (3 , 7)

Step-by-step explanation: When rotating a point 180 degrees counterclockwise about the origin our point A(x,y) becomes A'(-x,-y). So all we do is make both x and y negative. Since x and y are already negative, they become positive due to the double negative rule.

Answer:

y = 65 degree

x = 50 degree

Step-by-step explanation:

I believe that’s right

The two angles in the isosceles triangle are 50 and 65 degrees .

An isosceles triangle has two equal sides and two equal angles.

Consider that the one angles in the triangle is x degrees and the bottom angle is 65 degrees.

Then we have:

65  = y

(The sum of all angles in a triangle is 180 degrees.)

Then Simplifying the equation:

65 + 65 + x = 1802

x = 180 - 65 - 65

x = 50 degrees

Therefore, the two angles in the isosceles triangle are 50 and 65 degrees .

Learn more about angles here;

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Answer:

answer is x=15

AM=18

AB=4

1=2

2=10

3=20

Answer:

For question a the answer is option  b at 50$

For question b the answer is 50 miles and option a is less

Step-by-step explanation:

Answer:

Step-by-step explanation:

let price of Orange=x

price of Apple=2x

x+2x=20

3x=20

x=20/3

cost of Apple=2x=2×20/3=40/3=$13 1/3

Answer: 3.14159

Step-by-step explanation:

Answer:

0.04444444444

Step-by-step explanation:

[tex]\\ \rm\rightarrowtail 4/9-4/10[/tex]

[tex]\\ \rm\rightarrowtail \dfrac{40-36}{90}[/tex]

[tex]\\ \rm\rightarrowtail 4/90[/tex]

[tex]\\ \rm\rightarrowtail 2/45[/tex]

Answer: your answer would be 2

Step-by-step explanation:

Answer:

√366

Step-by-step explanation:

a^2 + b^2 = c^2

5 + 361 = 366

√366