what is 2x*x^2, just give answer

Answer:

-28a2 - 50ab + 50b2

Step-by-step explanation:

[7a-21a+10b]*[2a+5b]

[-14 + 10b]*[2a+5b]

Answer:

1

Step-by-step explanation:

What ever is in the parenthesis needs to be substituted into the equation

So,

3(-2)  + 7 =

-6 + 7

1

f(-2) = 1

Answer:

f(-2) = 1

Step-by-step explanation:

1. Replace x with -2

f(-2) = 3(-2) + 7

2. Multiply 3 by -2

f(-2) = -6 +7

3. Add -6 and 7

-6 + 7 = 1

f(-2) = 1

A) x=6

B) 50

Step-by-step explanation:

[tex]8x + 2 + 70 + 60 = 180[/tex]

[tex]8x = 180 - 132[/tex]

[tex]8x = 48[/tex]

[tex]x = 6[/tex]

~

[tex] \angle \: b = 8x + 2[/tex]

[tex]8(6) + 2[/tex]

[tex]50[/tex]

[tex] \angle \: b = 50[/tex]

~

Answer:

k=4

Step-by-step explanation:

Hope this helps!

Answer:

C.3

Step-by-step explanation:

SP and SR are tangent to circle Q.

-> SP = SR

-> 10x - 18 = 2x + 6

-> 10x - 2x = 18 + 6

-> 8x = 24

-> x = 24/8

-> x = 3

Answer:

C. 3

Step-by-step explanation:

Answer:

1 and 2 are vertical

3 and 4 adjacent

Answer:

B = 48°

b = 29.7

c = 39.1

Step-by-step explanation:

You have made a Mistake which is C = 102° Not 120°

So, Lets begin with the Problem

Since the Sum of Interior Angles of the Triangle = 180 °

Then A+B+C=180

Then 30+B+102=180

Then  B+132=180

Subtract 132 from Both sides

B = 180 - 132 = 48°

Applying Law of Sines

[tex]\frac{a}{sinA} =\frac{b}{sinB}=\frac{c}{sinC}[/tex]

by substituting

[tex]\frac{20}{sin30} =\frac{b}{sin48}=\frac{c}{sin102}[/tex]

Then   [tex]b=\frac{20sin48}{sin30} =29.7[/tex]

Then   [tex]c=\frac{20sin102}{sin30} =39.1[/tex]

Answer:

x=4

Step-by-step explanation:

both angles add up to 90* because it is a right angle

10x + 12x + 2 = 90

22x + 2 = 90

subtract 2 from both sides of the equation

22x = 88

divide both sides by 22

x = 4

Answer:

65°

step-by-step explanation:

solve for x:

116x - 1 = 114x + 1

116x - 114x = 1 + 1

2x = 2

x = 1

Find angle C:

m∠C + 116(1) - 1 = 180°

m∠C = 180° - 115

m∠C = 65°

Solution:

We know that:

This means that:

Step-1: Find the value of x.

[tex]116x - 1 = 114x + 1[/tex]

[tex]\rightarrow 116x - 114x = 1 + 1[/tex]

[tex]\rightarrow 2x = 2[/tex]

[tex]\rightarrow \bold{x = 1}[/tex]

Step-2: Solve for ∠C.

[tex](116x - 1) + (114x + 1) + \angle C + \angle C = 360\°[/tex]

[tex]\rightarrow (116x - 1) + (114x + 1) + \angle C + \angle E = 360\°[/tex]                           [∠C = ∠E]

[tex]\rightarrow 116x - 1 + 114x + 1 + 2\angle C = 360\°[/tex]                                  

[tex]\rightarrow 230x + 2\angle C = 360\°[/tex]                                        

[tex]\rightarrow 230(1) + 2\angle C = 360\°[/tex]                                                                 [x = 1]

[tex]\rightarrow 230 + 2\angle C = 360\°[/tex]                                                                          

[tex]\rightarrow 2\angle C = 360 - 230[/tex]

[tex]\rightarrow 2\angle C = 130[/tex]

[tex]\rightarrow \boxed{\bold{\angle C = \frac{130}{2} = 65\°}}[/tex]                                                      

Using proportions, it is found that about 175 trees are oak.

A proportion is a fraction of a total amount.

For the four samples, the proportions are: {0.3, 0.15, 0.26, 0.29}.

Hence, the mean proportion is given by:

M = (0.3 + 0.15 + 0.26 + 0.29)/4 = 0.25

Out of 700 trees:

700 x 0.25 = 175.

About 175 trees are oak.

More can be learned about proportions at https://brainly.com/question/24372153

Answer:

On average, 2 out of 10 adults visited the museum most frequently

Step-by-step explanation:

Rotation involves moving the rectangle ABCD around a fixed point

The length of side A'B' is 4 units, if AB was 4 units

From the question, we have the following transformations

Both transformations are rigid transformations, and they do not change the length of the shape

Hence, the length of side A'B' is 4 units, if AB was 4 units

Read more about transformation at:

https://brainly.com/question/4289712

Answer:

Solving steps:

18) 16a²b - 8abc + 4ab²c²

=> 4ab(4a - 2c + bc²)

19) 3x³ + 3x² - 3x

=> 3x(x² + x - 1)

20) 2abx² + 3abx³ - 4abx[tex] {}^{4} [/tex]

=> abx²(2 + 3x - 4x²)

Answer:

y=2.89

explanation

square root of 24=square root of (6)^2+(y-8)^2

4.89=6+y-8

4.89-2=y

2.89=y

Answer:

3.6g

Step-by-step explanation:

the protein thats in 125g of yoghurt is 4.5g

the protein thats in 1g of yoghurt is 4.5/125

the protein thats in 100g of yoghurt is

4.5/125 x 100

0.036 x 100

3.6g

Answer:

Step-by-step explanation:

Answer:

y=2x-1

Step-by-step explanation:

Since it is parallel to y=2x-5, they have the same slope of 2.

Now you're going to plug the point and slope into the following equation: y-(y value of point) = slope ×(x-(x value of point))

y-5= 2 (x-3)

Now you simplify:

y-5=2x -6

y=2x-1

Answer:

x=1

Step-by-step explanation:

3x1+2=5

Answer:

I'm assuming you're trying to find x.

In this problem, x = 1

Step-by-step explanation:

3x + 2 = 5

    -2     -2    Subtract 2 from each side

3x = 3

3x/3 = 3/3    Divide each side by 3

x = 1

The computation of the angle given simply shows that the value of angle x is 109°.

From the information given, it can be noted that two numbers are given and there's a subtraction sign between the numbers given.

Therefore, in this scenario, one simply just has to subtract the numbers. Therefore, thus goes thus:

x = 304 - 115

x = 189

The value of x is 189°.

Learn more about angles on:

https://brainly.com/question/25770607

Answer:

54:45

6:5

this is the scale factor

Answer:

x=-3 im pretty sure

Step-by-step explanation:

so if y=4 and 4 is something plus 7, 7+-3=4 so im abut 98% its -3

Answer:

grafic 2

Step-by-step explanation:

Using the z-distribution, the 95% confidence interval is (0.1279, 0.1921), and it means that we are 95% sure that the proportion for the entire population is between these two values.

A confidence interval of proportions is given by:

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which:

In this problem:

Hence:

[tex]\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.16 - 1.96\sqrt{\frac{0.16(0.84)}{500}} = 0.1279[/tex]

[tex]\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.16 + 1.96\sqrt{\frac{0.16(0.84)}{500}} = 0.1921[/tex]

The 95% confidence interval for the true proportion of households that have experienced property damage due to crime is (0.1279, 0.1921), and it means that we are 95% sure that the proportion for the entire population is between these two values.

More can be learned about the z-distribution at https://brainly.com/question/25890103

Answer:

Part A: 18 cups

Part B: 56 biscuits

Part C: $0.16

Step-by-step explanation:

Part A

72 * 1/4 = 18

Part B

18 total cups/ 2 cups/biscuit = 9 cups able to be used (dk how else to explain it)

6 * 9 = 56 biscuits

Part C

$6.48/56 = $0.16

Answer:

x = 1.28t^2 > 5.5

Answer:

[tex]t\le \:7.04[/tex]

Step-by-step explanation:

[tex]1.28\ge \cfrac{t}{5.5}\:(\bold{Switch \: sides})[/tex]

[tex]\cfrac{t}{5.5}\le \:1.28[/tex]

[tex]\cfrac{5.5t}{5.5}\le \:1.28\cdot \:5.5\:(\bold{ Multiply\: both\:sides\:by\: 5.5})[/tex]

[tex]t\le \:7.04[/tex]

~

Answer: a) I believe it is 2 out of 8

b) 6 out of 8

c) 50/50 chance

d) 3 out of 8

Not 100% sure so please double-check.

Step-by-step explanation:

The pinwheel has a total of 8 places. There are only 2 purple squares, there are 4 evens and 4 odds, and there are 3 numbers less than 4, (1,2,3).