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
Butoxors [25]
3 years ago
5

The area of a trapezoid is 864 cm. It has a height of 24 cm, and the length

Mathematics
1 answer:
Bogdan [553]3 years ago
6 0

Answer:=42 cm

Step-by-step explanation:

Strap=(a+b)*h/2    ( where a and b are trapezoid' s  bases and h is a height)

So   864=(30+b)*24/2

30+b=864*2/24

30+b=864/12

30+b=72

b=72-30

b=42 cm

You might be interested in
Compare the line passing through the points (–2, –9) and (4, 6) to the line given by the equation y = 25x – 4.
elena-s [515]

Answer:

D. They have the same y-intercep

Step-by-step explanation:

Before the comparison will be efficient, let's determine the equation of the two points and the x intercept .

(–2, –9) and (4, 6)

Gradient= (6--9)/(4--2)

Gradient= (6+9)/(4+2)

Gradient= 15/6

Gradient= 5/2

Choosing (–2, –9)

The equation of the line

(Y+9)= 5/2(x+2)

2(y+9)= 5(x+2)

2y +18 = 5x +10

2y =5x -8

Y= 5/2x -4

Choosing (4, 6)

The equation of line

(Y-6)= 5/2(x-4)

2(y-6) = 5(x-4)

2y -12 = 5x -20

2y = 5x-8

Y= 5/2x -4

From the above solution it's clear that the only thing the both equation have in common to the given equation is -4 which is the y intercept

4 0
3 years ago
‼️GEOMETRY‼️
ella [17]

Answer:

A.) 1018 square inches

Step-by-step explanation:

The largest sphere will have a diameter equaling the length of the cube (see picture).

If the side length of the cube is 18 inches, the diameter of the sphere is also 18 inches. Use the surface area formula for a circle:

SA=4\pi r^2

For this formula, we need the radius of the sphere. Divide the diameter by 2:

\frac{18}{2}=9

The radius is 9 inches. Plug this into the equation:

SA=4\pi *9^2

Simplify the equation:

SA=4\pi *81\\\\SA=324\pi \\\\SA=1017.87

Round the result to the nearest whole number:

1017.87 → 1018

The surface area is 1,018 inches².

:Done

Picture:

In a 2D version, we can clearly see that if the circle fits snuggly inside of the square, the diameter of a sphere is the same as the length of a side of the cube.

6 0
2 years ago
in the morning , Emily studied 40 minutes for an exam. Later that evening, Emily studied for x more minutes. write an equation t
julia-pushkina [17]

Answer:

40 + x = y

Just use the variables given to make an equation.

3 0
3 years ago
Read 2 more answers
7x9=7x5+7x= <br> Please help i’m on a test
mariarad [96]
I can’t see the photo sorry
7 0
3 years ago
Rihanna must put a five dollar deposit down to buy a necklace. If P where presents the full price of the necklace which expressi
natta225 [31]

Answer:

<em>The expression is </em><em>P - 5</em>

Step-by-step explanation:

Rihanna already made a deposit of $5 to buy the necklace (given)

Full price of necklace = P

Let m = how much Rihanna has left to pay

Full price of necklace = amount paid + amount left to pay

= 5 + m

So we equate the two full necklace prices

5 + m = P

m = P - 5

Therefore, the amount Rihanna owes before tax = P - 5

6 0
3 years ago
Other questions:
  • James and his friends ordered (b) hamburgers that cost $4 each and (f) fruit cups that cost $3 each. What is an algebraic expres
    12·2 answers
  • I really need help with the question above! This is my second time asking. Am I right? If not please give me the correct answer
    14·1 answer
  • What is the value of xy/z if x=-2 and z=4
    14·1 answer
  • Write an equation in slope-intercept form for the line with slope -8 and y -intercept 9.
    5·1 answer
  • Find the surface area of the hemisphere
    6·1 answer
  • What is the anwser to 8h times $9/h and what is the ratio units
    13·1 answer
  • Two boys are throwing a baseball bat back and forth. The ball is 4ft above the ground when it leaves one child's hand with an up
    13·2 answers
  • How do you write 5.9 in expanded form
    9·2 answers
  • Amy glued purple ribbon around the edge of her circular mirror she used 63 inches of ribbon this was just enough to go once arou
    7·2 answers
  • Question 7 Evaluate 2y + 3(y - 5) when y = 10 57 35
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!