can someone please help me with this question it is a hard question for me to answer​

Answer: [tex]3x^2-x+3[/tex]

Step-by-step explanation:

[tex](4x^2-x+6)-(x^2+3)[/tex]

Distribute the negative sign. This basically changes all the signs inside the parentheses.

[tex]4x^2-x+6-x^2-3[/tex]

Combine like terms;

[tex]3x^2-x+3[/tex]

Answer:

-20

Step-by-step explanation:

Answer:

[tex] - 20[/tex]

Step-by-step explanation:

[tex] (+ 34) + ( - 48) + ( - 32) + ( +26) \\ 34 - 48 - 32 + 26 \\ = (- 20) [/tex]

Answer:

the square root of 300 is 17. 32

Step-by-step explanation:

[tex] \sqrt{300} =17.32 \times 17.32[/tex]

Answer:

17.32

Step-by-step explanation:

step by step

Answer:

6

Step-by-step explanation:

2/7 times 21 equals 6. Next time, don't ask as a brainly question and use calculator so you don't waste/lose your points.

Hope this helps!!! PLZ MARK BRAINLIEST!!!

Answer:

8 40/7 - 5 40/7 = (56 + 40)/7 - (35 + 40)/7 = 96/7 - 75/7 = 21/7 = 3

Hope this helps!

:)

Answer:

8 40/7 - 5 40/7 = (56 + 40)/7 - (35 + 40)/7 = 96/7 - 75/7 = 21/7 = 3

Hope this helps!

:)

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

3

Answer: i will put the answer as a comment but what are you rounding to

Step-by-step explanation:

Answer:

Depends on what you're round to. Read below.

Step-by-step explanation:

To the 100,000 place:

100,000

To the 10,000 place:

110,000

To the 1,000 place:

107,000

To the 100 place:

106,500

To the 10 place:

106,510

To the 1 place:

106,513

Answer:

Diameter Length: ( About ) 5.4 km; Option B

Step-by-step explanation:

~ Let us apply the Area of the Circle formula πr^2, where r ⇒ radius of the circle ~

1. We are given that the area of the circle is 22.9 km^2, so let us substitute that value into the area of the circle formula, solving for r ( radius ) ⇒ 22.9 = π * r^2 ⇒ r^2 = 22.9/π ⇒ r^2 = 7.28929639361.... ⇒

radius = ( About ) 2.7

2. The diameter would thus be 2 times that of the radius by definition, and thus is: 2.7 * 2 ⇒ ( About ) 5.4 km

Diameter Length: ( About ) 5.4 km

When a shape is rotated, it must be rotated through a point.

The rotation from [tex]ABCD[/tex] to [tex]A'B'C'D'[/tex] is (d) [tex]90^o[/tex]

To determine the angle of rotation from [tex]ABCD[/tex] to [tex]A'B'C'D'[/tex], we use the following steps

See attachment for illustration.

From the attached image;

Hence, the angle of rotation is D: 90

Read more about rotations at:

https://brainly.com/question/1571997

Step-by-step explanation:

-12.6x - 4.9x = -154

-17.5x = -154

17.5x = 154

x = 154/17.5

x = 8.8

#CMIIW

Answer:

k=13

Step-by-step explanation:

19 + 12k = –k − 20

19+20=39=13k

k=13

Answer: -3

Step-by-step explanation:

Let's solve your equation step-by-step.

19+12k=−k−20

Step 1: Simplify both sides of the equation.

19+12k=−k−20

19+12k=−k+−20

12k+19=−k−20

Step 2: Add k to both sides.

12k+19+k=−k−20+k

13k+19=−20

Step 3: Subtract 19 from both sides.

13k+19−19=−20−19

13k=−39

Step 4: Divide both sides by 13.

13k /13 =  −39/13

Answer: y= 1x - 6

Step-by-step explanation:

(6,0)   (-1,-7)

0-(-7)= 7

6-(-1)= 7

7/7= 1  so the slope is 1 and we just need to find the y-intercept and we will do that by using the formula y= mx +b

-7= 1(-1) + b

-7= -1 + b

+1   + 1

b= -6    so the y-intercept is -6.

Answer:

y= 1x - 6

Step-by-step explanation:

just got it right!!: )

Answer:

Option (1).

Step-by-step explanation:

Dimensions of two triangles have been given as 3.6, 5.4, 6 units and 3, 4.5, 5 units.

If triangle one is dilated to form triangle two, then the ratio of the sides will be

Ratio = [tex]\frac{\text{Side of triangle (1)}}{\text{Corresponding side of triangle (2)}}[/tex]

         = [tex]\frac{3.6}{3}[/tex]

Similarly, ratio of other two sides will be = [tex]\frac{5.4}{4.5}[/tex] and [tex]\frac{6}{5}[/tex]

Since the triangle (1) was dilated to form triangle (2), so both triangles will be similar and the ratios of their corresponding sides will be equal.

Therefore, Ratios of the sides = [tex]\frac{3.6}{3}=\frac{5.4}{4.5}=\frac{6}{5}[/tex]

Option (1) will be the answer.

Answer:

StartFraction 3.6 Over 3 EndFraction = StartFraction 5.4 Over 4.5 EndFraction = StartFraction 6 Over 5 EndFraction

Answer:

1 1/2 is equal to 1.5.

Step-by-step explanation:

1/2 converted is .5.

A half of 1 is .5 or 1/2.

Answer: 1 1/2 is equal to 1.5.

Answer:

x = 105°

Step-by-step explanation:

The shape above is a regular hexagon and a regular octagon the both of them have the same interior angle through out. For a polygon to be regular all it interior angle are the same .

sum of interior angles of a polygon = (n - 2)180°

where

n = number of sides

Therefore,

sum of interior angle of a hexagon = (6 - 2)180

sum of interior angle of a hexagon = (4)180

sum of interior angle of a hexagon = 720

each angle of a regular hexagon = 720/6 = 120°

sum of interior angles of an octagon = (8- 2)180

sum of interior angles of an octagon = (6)180

sum of interior angles of an octagon = 1080

each angle of a regular octagon = 1080/8 = 135°

All the angle around a point add up to 360°. So if we take the interior angle from 360° we will get angle x

360 - (135° + 120°)

360 - 255

x = 105°

Answer:

105

Step-by-step explanation:

Answer:

Quad II's Symbols are (-, +)

Step-by-step explanation:

                                  |

   Quad 2                  |          Quad 1

                                  |

                                  |

_______________________________

                                  |

       Quad 3              |        Quad 4

                                  |

                                  |

Answer:

x² - 7x + 12

Step-by-step explanation:

(x - 3)(x - 4)       FOIL

x²- 4x - 3x + 12     Combine like terms

x² - 7x + 12

Answer:

1) Perpendicular

2) Parallel

3) Neither

4) Neither

Step-by-step explanation:

Answer:

1. Perpendicular

2. Parallel

3. Neither

4. Neither

Step-by-step explanation:

Perpendicular lines intersect at 90 degree angles

Parallel lines are lines that are straight and don't meet.

Answer:

x=-4

Step-by-step explanation:

[tex]\frac{1}{4} x - \frac{1}{8} = \frac{7}{8} + \frac{1}{2} x[/tex]

first group the like terms

[tex]\frac{1}{4} x - \frac{1}{2}x = 1[/tex]

as 1/8 plus 7/8 = 1

then add the x's together

[tex]-\frac{1}{4} x = 1[/tex]

and finally

x = -4

Answer:

You are using CAH which is adjacent/hypotenuse

Step-by-step explanation:

1.7101007166283435 is your answer

Answer:

1.710

Step-by-step explanation:

It got deleted before, idk why, but you are using CAH, so adjacent over hypotenuse. You would have to multiply cos(70) by 5 to get the answer.

Answer:

Technically there's an infinite number of equivalent fractions for 2/3 but to list a few 4/6, 6/9, 8/12, 12/18, 18/27.

Step-by-step explanation:

Hope this helps!

-MoCKEry

Answer:

the third one

Step-by-step explanation:

the hypotenuse cannot be gotten by subtracting the two shorter sides

Answer:

The answer is 24

Step-by-step explanation:

Add 18, 20, 24, 26, 32= 120

then divide by 5.

Answer:

The answer is 1/3

Step-by-step explanation:

Since there are 3 planes that arrive in a random order, there is a 1 in 3 chance that the plane from Chicago will arrive first. Hope this helps!

Answer:

The answer is 10

Step-by-step explanation:

Answer:

- Mr Cash's company business shows the maximum profit in 3 years after starting the business.

- The maximum profit = 23 thousand dollars = $23,000

- Anytime beyond 5.77 years will be too late to sell the business as the profit margins have entered negative values.

Step-by-step explanation:

Complete Correct Question

The profits of Mr. Cash’s company is represented by the equation

p(t)=-3t^2+18t-4,

where p(t) is the amount of profit in hundreds of thousands of dollars and t is the number of years of operation. He realizes his company is on the down turn and wishes to sell before he ends up in debt.

In what year of operation does Mr. Cash’s business show maximum profit? What is the maximum profit? What time will it be too late to sell business?

Solution

The profit function is given as

p(t) = -3t² + 18t - 4

p(t) = profit in thousand of dollars

t = time in years.

To find the year where the maximum profit is obtained, we use differentiation analysis to obtain the maximum of the profit function and the corresponding time where it occurs.

At the maximum of the profit function,

(dp/dt) = 0 and (d²p/dt²) < 0

p(t) = -3t² + 18t - 4

(dp/dt) = -6t + 18

At maximum profit

(dp/dt) = -6t + 18 = 0

6t = 18

t = (18/6) = 3 years.

(d²p/dt²) = -6 < 0

Hence, this value of t corresponds to the maximum value of the profit function.

The maximum profit is then obtained when t = 3

p(t) = -3t² + 18t - 4

p(3) = -3(3²) + 18(3) - 4 = 23 thousand dollars

The business will be late to sell when the profits from the business start to run into negative values. So, we obtain the time when the profit margins reaches 0.

p(t) = -3t² + 18t - 4 = 0

-3t² + 18t - 4 = 0

Solving the quadratic equation

t = 0.23 years or t = 5.77 years

Since the profits first start rising from the value at t=0 up till the maximum profit at t=3, 0.23 years isn't a realistic point to sell the business as this is part of the onset of profits, but beyond 5.77 years on the other hand represents when the business stops to bringing in profits and leads to losses.

Hope this Helps!!!

Answer:

yes, because if you input 5 for x it would be -8

and if u input -9 for y it is right as -8 is closer to 0 than -9

Answer:

3484m

Step-by-step explanation:

Perimeter of a rectangle= 2(L+B) where L= Length and B= Breadth

Length of the plot= 1215m

Breadth= 527m

∴ Perimeter of the plot= 2(1215m+527m)

                                       = 2(1742m)

                                       = 3484m

Hope this helps!!!

I'll go slow:

[tex]2\sqrt 7 - \sqrt{28}[/tex]

[tex]=2 \sqrt 7 - \sqrt{4 \cdot 7}[/tex]

[tex]=2 \sqrt 7 - \sqrt{4} \cdot \sqrt{7}[/tex]

[tex]=2 \sqrt7 - 2 \sqrt 7[/tex]

[tex]=0[/tex]

Answer: B  rational and equal to 0.