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joja [24]
2 years ago
5

Can someone help with this problem

Mathematics
2 answers:
Maksim231197 [3]2 years ago
7 0

Step-by-step explanation:

x+35+25=180

x+60 =180

x = 120.

y+x =18

WARRIOR [948]2 years ago
4 0
35+25=60
y=60


If you add the opposite side values of the triangle (not the one touching the y), you get the value of y). 35+25=y
This works because y+x= 180 and the three angles of a triangle add to 180.
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If in quadrilateral ABCD, AB = DC and BC = DA, then diagonals AC and BD Select one:
Varvara68 [4.7K]

Answer:

<em>It's </em><em>B</em><em>, the diagonals bisect each other</em>

Step-by-step explanation:

If they were equal, it would have to be a rectangle. If they were perpendicular, it would have to be a sqaure.

5 0
2 years ago
Carlos has 32 envelopes and wants to deliver 3 envelopes to each class. How many classrooms will he visit?
statuscvo [17]

10 classrooms

With 2 left over.

It's a simple question, make sure that you know that the key is 32/3, and because it's not fully divisible use the whole number (10)

8 0
3 years ago
Three hundred three and two hundredths
inessss [21]

303.02

Three hundred three=303

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3 0
2 years ago
A regular octagonal pyramid. Each side of the base is 6 cm long. it has a height of 10cm. Find the surface area of the pyramid​
attashe74 [19]

9514 1404 393

Answer:

  470.16 cm²

Step-by-step explanation:

The apothem of the base is used for two purposes: to find the area of the base, and to find the slant height of each face.

The apothem of the base for side length s is ...

  s/2 = a·tan(π/8)

  a = s/(2·tan(π/8)) ≈ 7.24 cm

The slant height of a triangular face is found using the Pythagorean theorem. The apothem of the base and the height are legs of the right triangle whose hypotenuse is the slant height. For slant height x, we have ...

  x² = 10² + a² = 100 +52.46

  x ≈ √152.46 ≈ 12.35

__

The area of the 8 triangular faces will be ...

  A = 1/2Px . . . . where P is the perimeter of the pyramid

The area of the base will be ...

  A = 1/2Pa

So, the total surface area is ...

  A = 1/2P(a + x) = (1/2)(8)(6 cm)(7.24 +12.35 cm) ≈ 470.16 cm²

8 0
3 years ago
Read 2 more answers
The following graph shows the relationship between cost and revenue for a manufacturer of lab coats.
nataly862011 [7]

Answer:

Option a.

I and III

Step-by-step explanation:

Observing the graph

For n=400 coats

The cost is about $2,200

and

The revenue is less than $1,400

Substitute the value of n=400 in each equation to find the solution

I Cost 1.5(400)+1,600=$2,200 ----> is ok

II Cost 4.5(400)+1,600=$3,400 ----> is not ok ( is greater than $2,200)

III Revenue 3.25(400)=$1,300 ----> is ok ( is less than $1,400)

IV Revenue 5.75(400)=$2,300 ----> is not ok ( is greater than $1,400)

therefore

The solution is I and III

6 0
3 years ago
Read 2 more answers
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