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Dima020 [189]
3 years ago
8

The base of a solid right pyramid is a square with an

Mathematics
1 answer:
melamori03 [73]3 years ago
7 0

Answer:

C

Step-by-step explanation:

Base area = n^2

V = (base area * height)/3 = (n^2 *(n-1)/3 = 1/3n^2(n-1)

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00B0J0DD:
Firdavs [7]

Answer: B.

Explanation and reasoning:

6 0
2 years ago
Un boligrafo cuesta 30 ptas mas que un lapiz. Un muchacho ha comprado 8 boligrafos y 15 lapices. En total le han costado 700 pta
Firdavs [7]

Por un sistema de ecuaciones, tiene-se que:

  • Cada lapiz cuesta 20 ptas.
  • Cada boligrafo cuesta 50 ptas.

-------------------------

  • Considera-se un sistema de ecuaciones, con cada boligrafo custando x y cada lapiz custando y.
  • <u>Boligrafo cuesta 30 mas que un lapiz</u>, o sea, x = 30 + y
  • <u>8 boligrafos y 15 lapices cuesta 700</u>, o sea, 8x + 15y = 700

-------------------------

  • Aplicando el <u>primer ecuación en la segunda, </u>tiene-se el cuesto de cada lapiz:

8x + 15y = 700

8(30 + y) + 15y = 700

240 + 8y + 15y = 700

23y = 460

y = \frac{460}{23}

y = 20

Cada lapiz cuesta 20 ptas.

-------------------------

Por fin, el cuesto de cada boligrafo es dado por:

x = 30 + y = 30 + 20 = 50

Cada boligrafo cuesta 50 ptas.

Un problema similar es dado en brainly.com/question/24637096

4 0
3 years ago
The value of x is 1. Find the value of each expression and type
krek1111 [17]

Answer:

can I get a hiaaa

How was the government able to make children go to residential school?

6 0
3 years ago
Imari spent half her weekly allowance playing mini-golf. To earn more money, her parents let her wash the car for $4. If she end
Lyrx [107]

Answer:

$16

Step-by-step explanation:

She spends half of her weekly allowance.

She earns $4.

12-4=8.

8 is half of what she originally had. 8 times two is 16, her weekly allowance

3 0
3 years ago
Read 2 more answers
Which expression is equivalent to −19y+13 ?
Vikki [24]
The first thing you should do in this case is to write the expression correctly:
 - (1/9) y + (1/3)
 Now, we take out common factor (1/9) obtaining:
 1/9 (-y + 3)
 Let's check:
 1/9 (-y + 3)
 -1/9y + 3/9
 -1/9y + 1/3
 OK
  Answer: 
 An expression equivalent is: 
 1/9 (-y + 3)

4 0
3 years ago
Read 2 more answers
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