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Lapatulllka [165]
2 years ago
8

Hello brainly can you tell me what 50-21=

Mathematics
1 answer:
Roman55 [17]2 years ago
4 0

Answer:50-21=29

Step-by-step explanation: calculate if u can

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DanielleElmas [232]

if we divide 38 by 19, we get 2, and if we divide 95 by 19 we get 5. therefore   \bf 1\frac{38}{95}\implies 1\frac{2}{5}

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6y + 15 = A (2y +B)
Black_prince [1.1K]

Step-by-step explanation:

C. A =3 , B = 5

6y + 15 = 3 ( 2y + 5 )

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P + 0.20p as an equivalent expression
andreev551 [17]

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An equivalent expression to p - 0.20p is 0.8p Hope this helps :)

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Convert 8 milliliters to fluid ounces use 1 mL =0.034
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Para recortar algumas figuras geométricas, um aluno utilizou uma cartolina com 1mx0,8m. Sabendo que ele recortou 2 triângulos, a
Gnom [1K]

Answer:

7190 cm²

Step-by-step explanation:

Para recortar algumas figuras geométricas, um aluno utilizou uma cartolina de 1 m x 0,8m.

Passo 1

Determine a área de todo o papelão

= Temos dimensões = 1mx0,8m

Área = Comprimento × Largura

= 0,8m²

Nós convertemos para cm²

1 m² = 10.000 cm²

0,8m² = x cm²

Multiplicação cruzada

0,8m² × 10.000 cm² / 1 m²

= 8000 cm²

Passo 2

Sabendo que recortou 2 triângulos, ambos com 20cm de base e 30cm de altura

Encontramos a área de um triângulo

= 1/2 × base × altura

= 1/2 × 20 × 30

= 300cm²

Ele cortou 2 triângulos Portanto, o são dos dois triângulos = 300cm² × 2

= 600cm²

etapa 3

Ele também cortou 2 trapézios ambos com bases de 10cm e 20cm e altura de 7cm.

A área de um trapézio =

1/2 (a + b) h

= 1/2 (10cm + 20cm) × 7cm

= 1/2 × 30 × 7

= 105 cm²

Ele cortou dois trapézios, portanto

A área dos dois trapézios do corte = 105cm² × 2

= 210 cm²

Passo 4

A área total do papelão que foi cortado = 600cm² + 210cm²

= 810 cm²

Etapa 5

Determine em cm² quanto de papelão sobrou.

Isso é calculado como:

Área total do papelão - Área total que foi cortada

= 8000 cm² - 810 cm²

= 7190 cm²

5 0
3 years ago
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