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2 years ago

repost since nobody answered how would i answer this?

Mathematics

1 answer:

pshichka [43]2 years ago

7 0

Answer:

b is not a function

Step-by-step explanation:

To be a function there must be a one to one correspondence.

Each x must only go to one y

b has an x that goes to two different y's

1 goes to 5 and 13. That makes it a relation not a function

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HELP ME PLEASE ASAP

lakkis [162]

So I have the same problem with you

8 0

2 years ago

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

Nate is 4 years older than 2 times his brother’s age. Write a rule that represents Nate’s age “n” as a function of his brother’s

IRINA_888 [86]

Answer:

n = 2b + 4

Step-by-step explanation:

4 years older = +4

2 times his brother = 2b

n= 2b+4

6 0

3 years ago

Homework help, please

Vinvika [58]

Start the line at 3 on the y-axis (vertical). then go down two boxes and to the right three & make a mark at that point. keep going down two and over three until the end of the graph. then just connect the marks.

4 0

2 years ago

Please help me. It’s geometry

Verizon [17]

Option 3:

m∠ABC = 66°

Solution:

Given $\overline {F A D} \| \overline {E H C}$ and ABH is a transversal line.

m∠FAB = 48° and m∠ECB = 18°

m∠ECB = m∠HCB = 18°

Property of parallel lines:

If two parallel lines cut by a transversal, then the alternate interior angles are equal.

m∠FAB = m∠BHC

48° = m∠BHC

m∠BHC = 48°

Exterior angle of a triangle theorem:

An exterior angle of a triangle is equal to the sum of the opposite interior angles.

m∠ABC = m∠BHC + m∠HCB

m∠ABC = 48° + 18°

m∠ABC = 66°

Option 3 is the correct answer.

4 0

3 years ago

*repost since nobody answered* how would i answer this?

repost since nobody answered how would i answer this?