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3 years ago

8

The plane is horizontal, what describes the shape of the cross section?

2 answers:

kenny6666 [7]3 years ago

8 0

Answer: Trapezoid!

Hope this helped alot!

Crazy boy [7]3 years ago

7 0

Answer:

Triangle

Step-by-step explanation:

A square pyramid has 4 sides that are triangles and a square base.

A plane that contains the vertex (top of the pyramid) and is perfectly vertical, must contain the vertex, the lines formed by the intersection of the plane with the left and right triangles, and the line formed by the intersection of the plane with the square. So the figure must be a triangle.

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The sum of two numbers is 58. If their difference is 28, find both numbers

Alina [70]

Answer:

the numbers are 43 and 15

Step-by-step explanation:

Let the numbers are x and y

x+y=58

x-y=28

from that two equations,

2x=86

x=43

substitute x value in any equation we will get ,

y=15

7 0

2 years ago

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Solve 3n+5>9+n Answer?

Vedmedyk [2.9K]

Answer:

inequality 3n+5>9+n, subtract 5 from both sides to get 3n>4+n, now subtract n from both sides to get 2n>4 and divide both sides by 2 to get n>2 :)

Step-by-step explanation:

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2 years ago

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Kevin earns $6.75 an hour. At this rate how much does he earn in40 hours?

Elenna [48]

Answer:

$270

Step-by-step explanation:

Simply take the per hour rate and multiply it by the number of hours.

6.75 X 40 = 270

3 0

2 years ago

A blank CD can hold 70 minutes of music. So far you have burned 25 minutes of music onto the CD. You estimate that each song las

zaharov [31]

Answer:

The possible numbers of songs that you can burn onto the CD is 11.

Step-by-step explanation:

The total storage capacity of CD = 70 minutes

Storage already used = 25 minutes

Hence, The available storage = Total available storage - Used Storage

= 70 minutes - 25 minutes = 45 minutes

Hence, the CD has 45 minutes storage left.

Now, each song takes up 4 minutes of storage.

⇒ $\textrm{Total number of songs possible} = \frac{\textrm{Total storage left}}{\textrm{Time taken by each song}}$

= $\frac{45 minutes}{4minutes } = 11.25$

⇒The number of songs possible = 11.25 ≈ 11

Hence, the possible numbers of songs that you can burn onto the CD is 11.

4 0

3 years ago

work out the total area of triangle ABC. calculate the area of AC. sides are:8.2cm and 13.5cm and angle 81 degrees

umka2103 [35]

Answer:

54.67 cm²

Step-by-step explanation:

Given that the two sides of Δ ABC are 8.2 cm and 13.5 cm and the angle included by those sides is 81°.

Let, b = 8.2 cm and c = 13.5 cm and ∠ A = 81°

Hence, area of triangle ABC, Δ = $\frac{1}{2} bc \sin A$

⇒ Δ = $\frac{1}{2} bc \sin 81$

⇒ Δ = $\frac{8.2 \times 13.5 \times \sin 81}{2}$

⇒ Δ = 54.67 cm² (Answer)

7 0

3 years ago