Mathematics High School

Find an expression for the area of the rectangle. Write your answer in standard form.​

Find An Expression For The Area Of The Rectangle. Write Your Answer In Standard Form.

Answers

Answer 1

Answer:

B. 8x² + 18x - 5

Step-by-step explanation:

(2x + 5)(4x - 1)

Use the distributive property to multiply 2x + 5 by 4x - 1.

8x² - 2x + 5(4x) + 5(-1)

8x² - 2x + 20x - 5

Combine 20x and -2x to get 18x.

8x² + 18x - 5

The expression for the area of the rectangle is 8x² + 18x - 5, which is B.

Related Questions


A square has a diagonal with the length of 8V7 inches. What is the length of the
sides?

Answers

Answer:

approximately 13.9 inches

Step-by-step explanation:

That's 8√6, not 8V7.

The four sides are of the same length (x).  According to the Pythagorean Theorem, x² + x² = (diagonal length)² = (8√6)², or

2x² = 64(6) = 384

Dividing both sides by 2, we get:

x² = 192, or x² = 4(48).  Then the side length is x = √16√12, or

x = 4√4√3 = 8√3.  This is approximately 13.9 inches.

Write the standard equation of a circle with center $\left(-3,\ 4\right)$ and radius $1$ .

Answers

Answer:

(x + 3)² + (y – 4)² = 1

Step-by-step explanation:

(x – h)² + (y – k)² = r².

Where (h, k) is the center of the circle, and r is the radius of the circle.

The square root of 105 would lie between which two consecutive integers?

Answers

Answer:

the square root of 105 lies between 10 and 11

Step-by-step explanation:

Which perfect squares "box" 105 in?  10^2 = 100 and 11^2 = 121.

The square roots of 100 and 121 are 10 and 11.  

Thus, the square root of 105 lies between 10 and 11.

Please help!!!!!!!!!!!!!!!!

Answers

Answer:

23

Step-by-step explanation:

90-47=43 (90 bc right angle)

2x-3=43

+3

2x=46

÷2

x=23

The answer is 23. I hope this helps

Check out the image

Answers

Answer:

oop, okay

Step-by-step explanation:

Answer:

twitter should work

go on it but also other websites so when you go to delete your history (ctrl h on chrome) it'll match up

example: go on twitter at 2:25 but also some other websites and switch back until 2:26 go back on and then other websites

Step-by-step explanation:

What is the ∣−9.4∣= [value1]

Answers

Answer:

9.4

Step-by-step explanation:

Does anyone know the answer to this?

Answers

Answer:

80°

Step-by-step explanation:

both triangles are scalene triangle and the have equal properties

angles in triangles sum up to 180°

30°+70° +D=180°

D=180-100=80°

Select the correct answer. Simplify the polynomial expression. 3x(-2+7)-5(x -1)(4x-3)
A. -26x2 + 56x - 15
B. 14x2 - 14 + 15x
C. -26x2 + 21x - 15
D. 2x2 + 14x - 2

Answers

Answer:

-20x^2 + 56x - 15

Step-by-step explanation:

3x(−2+7)−5(x−1)(4x−3)

Add −2 and 7 to get 5.

3x×5−5(x−1)(4x−3)

Multiply 3 and 5 to get 15.

15x−5(x−1)(4x−3)

Use the distributive property to multiply −5 by x−1.

15x+(−5x+5)(4x−3)

Apply the distributive property by multiplying each term of −5x+5 by each term of 4x−3.

15x−20x^2+15x+20x−15

Combine 15x and 20x to get 35x.

15x−20x^2+35x−15

Combine 15x and 35x to get 50x.

50x−20x^2−15

Swap terms.

-20x^2 + 56x - 15

HELPPPPPPPPPPPPPPPPME PLS

Answers

Answer:

b=1 a=-3

Step-by-step explanation:

This penny will double every day for the next 30 days. What is the answer? Can someone tell me at least how to set up the doubling equation for this doubling math excercise?​

Answers

Answer:

10737418.24

Step-by-step explanation:

The answer is 2^n

7 x 10-⁴ 3.5 X 10⁶ thank youuuuuuuuuuiuuuuu​

Answers

Answer:

−3430000

Step-by-step explanation:

Mark as brainllest

3430000 I thinkkkkkkkkk

A right triangle has a hypotenuse of 10 feet and a leg of 6 feet. What is the length of the other leg?

Answers

Answer:

The other length of the leg is 8 feet.

Step-by-step explanation:

To find the answer we have to find what 10 and 6 is squared.  10 x 10 = 100.  

6 x 6 = 36.  Now since we are trying to find the length of the other leg, we will subtract 100 from 36 and we get 64.  Then for the last step, we will figure out what number squared equals 64.  Because 8 x 8 = 64, 8 is our answer.

A computer company will sell its new tablet
computer for six hundred forty dollars and
sixty-five cents. How is this number written in
expanded notation?

Answers

Answer: J

Explanation: J is equivalent to $640.65

hope that helps if you have any questions let me know and if you could mark this as brainliest i would really appreciate it!!

Can you help me find the volume

Answers

V=210

Also, the equation to find this is V=lwh/3 or 5x9x14/3, which equals 210.

Also I would greatly appreciate brainliest if you could give it to me thank you and good luck.

Answer:

here is the formula

and at first calculate area of triangle then use this formulA

Raul made 4 cups of fruit salad. one serving of fruit salad is 1/2 cup. how many serving of fruit of fruit salad did raul make?

Answers

Answer:

Raul made 8 servings of fruit salad

Step-by-step explanation:

Here, we want to get the number of servings made by Raul

From the question;

1 serving = 1/2 cup

x servings = 4 cups

Thus;

4 * 1 = x * 1/2

x = 4/(1/2)

x = 8 servings

The function Mx)=x^3-3x^2+ 2x rises as x grows very small.
A. True
O B. False

Answers

It’ll be false

The phrasing "x grows very small" is the same as saying "x gets more negative". So it starts off with x = -1, then goes to x = -2, then to x = -3, etc etc
Visually x is moving to the left
As you move to the left along this curve, you'll eventually go downhill at some point and keep going downhill. So overall, y is getting more negative as well. This means the function is falling as you move to the left.
----------
We can see this numerically. If x = 0, then y = 0 after plugging it into y = x^3-3x^2+2x
Then plug x = -1 into that same equation and you should get y = -6
Plug x = -2 into that equation and you should get y = -24
The progression from y = 0 to y = -6 to y = -24 shows y getting more larger in the negative direction.
I think it’s is false answer false

The experimental probability that the bus will arrive after 8:19 is

Answers

Answer:

i wish i can help but good luck

Step-by-step explanation:

solve 2 in 3 (x-4)
HURRY

Answers

Answer:

-6

Step-by-step explanation:

Answer:

-6is the correct answer

Step-by-step explanation:

hope this helps

I need help with this problem- please help me ;w;

NO BOTS

Answers

Answer:

A) Perimeter: 210

   Area: 2,516

B) Area

C) Perimeter

Hope this helps ya :3

Which one is the correct one

Answers

Step-by-step explanation:

Sum of opposite angles are supplementary,

x + 60 + 3x = 180

4x + 60 = 180

4x = 180 - 60

4x = 120

x = 120 / 4

x = 30

round the number 15.39624 to 2 decimal places​

Answers

15.40 becauwe 6 makes 9to 0 and it makes 3 to 4

Rounding 15.3924 is gonna give you 15.40

Simply combining like terms:21b-32+7b-20b​

Answers

Answer:

21b-32+7b-20b​

7b-32

Step-by-step explanation:

If using the method of completing the square to solve the quadratic
equation x2 + 5x – 1= 0, which number would have to be added to "complete the square"?

Answers

Answer:

25/4 or 6.25

Step-by-step explanation:

Given that the general equation of  a quadratic equation is given as ax^2 + bx + c = 0, to complete the square, we subtract c from both sides of the equation and add the square of (b/2a) to both sides.Hence given x^2-5x-19=0, to complete the square, we add (-5/2)^2 to both sides following the illustration given.This is 25/4 or 6.24

HELP ASAPPPPPPPPPPPP

Answers

Answer:

x = 140°

Step-by-step explanation:

x is a supplementary angle to 40°. This means that when added together equals 180°

x = 180° - 40° = 140°

Answer:

Step-by-step explanation:

Since I can't see slide 2   I don't know what pattern they want you to see, but, I do know that  when you have a line with an angle... the other side , here that is the 'X'   will always be  180 - 40 =  X      

X is easy to solve that way. it's , ofc 140  :D  

A 20-ounce soft drink costs $1.80. A 12-ounce soft drink costs $1.32.

Answers

Answer:

rfgvsdgsgvbd fs e gbaebg g

Step-by-step explanation:

the 20oz soft drink is cheaper because you pay 9 cents per ounce and you pay 11 cents per ounce for the 12 oz can
you can find this by diving 1.80/20 and 1.32/12

How many solutions does this equation have -3 + 2h = 2h
-No solution
-One solution
-Infinitely many solutions

Answers

Answer:

no solution

Step-by-step explanation:

-3+2h=2h

-3=2h-2h

-3=0

Answer:

This equation has no solutions

Step-by-step explanation:

.
In the hands of someone with harmful intentions, how can analogies prove to be dangerous tools?
A)Analogies can create long-lasting confusion that prevents people from making decisions.
B)Analogies make significant connections seem far less powerful than they actually are.
C)Analogies meant to persuade or influence people are often disguised as explanations.
D)Analogies, even weak and misleading ones, can be powerful tools of persuasion.

Answers

Answer:

I believe, its D.

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

The cost of fencing a circle shaped garden is $15 per foot if the radius of the garden is 7 feet find the total cost of fencing The Garden to the nearest dollar

Answers

Answer:

$2310

Step-by-step explanation:

Total cost of fencing = area of fence x cost of fencing per feet

Area of a circle = nr^2

n = 22/7

r = radius = 7

Area = 22/7 x 7^2 = 154

154 x 15 = 2310

Write an equation for this relationship.

Answers

Answer:

y=18.5x

Step-by-step explanation:

74-55.5=18.50

92.50-74=18.50

111-92.5=18.50

(3,55.50)

y=18.5x +b

55.50=18.5(3)+b

55.50=55.50+b

b=0

Please help! Im begging!​

Answers

Alright, so we know that there are 7 days a week with 24 hours per day.

24x7= 168 hours a week.

Convert the problem to an equation using the percentage formula: P% * X = Y.

Let's take the 40% that is Sleep and use it in the percentage formula with the 168 hours.

40%x168= roughly 67 hours.

Hope this helped!

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