1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Burka [1]
2 years ago
14

30 points!! Help please!! Will give Brainliest!!!

Mathematics
1 answer:
Leto [7]2 years ago
3 0

Answer:

B

Step-by-step explanation:

Area of a trapezoid = (1/2)*(base1+base2)*height

Area = (1/2)*(15+7)*height

DC is 7 which means EF is also 7.

AB = 15

AB - EF = AE + FB = 8

And AE = FB we know that AE is 8/2 = 4

We were given AD = 5. We have a 3-4-5 right triangle and therefore DE is 4. The height of the trapezoid is 3 ft.

Area = 1/2 (15+7)*(3)

Area = (1/2)*22*3

Area = 11 * 3

Area = 33 ft^2

Your answer is B

You might be interested in
Use the image below to answer the following question. Find the value of sin x® and cos yº What relationship do the ratios of sin
Flauer [41]

Answer:

sin(x) and cos(y) are equal and have ratio of 1 : 1

First find the missing hypotenuse using Pythagoras theorem:

a² + b² = c²

12² + 5² = c²

c = √144+25

c = 13

using sine rule:

sin(x) = \dfrac{opposite}{hypotenuse}

sin(x) = \dfrac{5}{13}

using cosine rule:

cos(y) = \dfrac{adjacent}{hypotenuse}

cos(y) = \dfrac{5}{13}

4 0
2 years ago
Read 2 more answers
What is a solution to the equation 3 / m + 3 - M / 3 - M equals m^2 + 9 / m^2-9?​
Mnenie [13.5K]

Answer: Last option.

Step-by-step explanation:

 Given the equation:

\frac{3}{m+3}-\frac{m}{3-m}=\frac{m^2+9}{m^2-9}

Follow these steps to solve it:

- Subtract the fractions on the left side of the equation:

\frac{3(3-m)-m(m+3)}{(m+3)(3-m)}=\frac{m^2+9}{m^2-9}\\\\\frac{9-3m-m^2-3m}{(m+3)(3-m)}=\frac{m^2+9}{m^2-9}\\\\\frac{-m^2-6m+9}{(m+3)(3-m)}=\frac{m^2+9}{m^2-9}

- Using the Difference of squares formula (a^2-b^2=(a+b)(a-b)) we can simplify the denominator of the right side of the equation:

\frac{-m^2-6m+9}{(m+3)(3-m)}=\frac{m^2+9}{(m+3)(m-3)}

- Multiply both sides of the equation by (m+3)(3-m) and simplify:

\frac{(-m^2-6m+9)(m+3)(3-m)}{(m+3)(3-m)}=\frac{(m^2+9)(m+3)(3-m)}{(m+3)(m-3)}\\\\-m^2-6m+9=\frac{(m^2+9)(3-m)}{(m-3)}

- Multiply both sides by m-3:

(-m^2-6m+9)(m-3)=\frac{(m^2+9)(3-m)(m-3)}{(m-3)}\\\\(-m^2-6m+9)(m-3)=(m^2+9)(3-m)

- Apply Distributive property and simplify:

(-m^2-6m+9)(m-3)=(m^2+9)(3-m)\\\\-m^3-6m^2+9m+3m^2+18m-27=3m^2+27-m^3-9m\\\\-m^3-3m^2+27m-27+m^3-3m^2+9m-27=0\\\\-6m^2+36m-54=0

- Divide both sides of the equation by -6:

\frac{-6m^2+36m-54}{-6}=\frac{0}{-6}\\\\m^2-6m+9=0

- Factor the equation and solve for "m":

(m-3)^2=0\\\\m=3

In order to verify it, you must substitute m=3 into the equation and solve it:

\frac{3}{3+3}-\frac{3}{3-3}=\frac{3^2+9}{3^2-9}\\\\\frac{3}{6}-\frac{3}{0}=\frac{18}{0}

<em>NO SOLUTION</em>

7 0
3 years ago
The area of a cell phone is 12 inches squared. What is the length of the missing side?
zzz [600]

Answer:

12

Step-by-step explanation:

8 0
3 years ago
Choose all the factors of 8. (Check all that apply.)
Oxana [17]

Answer:

Factors of 8 are 2,4 and 8.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
A batting cage charges a flat fee of $5 to practice and then $1.50 per bucket of balls.
ahrayia [7]

Answer:

im pretty sure its B, i hope it helps

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • Select all of the appropriate descriptions for the object below.СAT​
    10·1 answer
  • Consider this expression. -4x to the second power 2x - 5 (1 + x) What expression is equivalent to the given expression? blank x
    15·1 answer
  • A motorist is driving across the country at a steady speed at 54.5 miles per hour. In the 17th hour, the odometer on her car rea
    10·1 answer
  • Solve this dont post irrelavent answers ​
    8·1 answer
  • Al simplificar esta expresion logaritmica, cual es la forma mas simple? ​
    9·1 answer
  • If 5 pounds of broccoli cost is $12 then how much will 7 pounds of broccoli cost?
    7·2 answers
  • An advertising executive wants to determine if a new billboard placed in a city caused sales of her product to increase. To do t
    12·1 answer
  • the length of a rectangle is 6 meters more than its width. if the area of the rectangle is 135 square meters, find its dimension
    12·1 answer
  • HELPPPPPP PLEASEEEEEEE
    10·1 answer
  • Marcia used 1 1 3 yards of fabric to make 2 3 of a costume. How many yards of fabric will she need to make five costumes?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!