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3 years ago

2) Escreva a expressão algébrica que representa cada uma das seguintes condições:

Mathematics

1 answer:

Bess [88]3 years ago

3 0

Answer:

a) 3y + x

b) a ^ 2 -2b

c) t ^ 4 + m / 2

d) xy - x ^ 2-y ^ 2

Step-by-step explanation:

a) o triplo de um número y adicionado a um número x ______ 3y + x ________

b) a diferença entre o quadrado do número a e o dobro do número b ______ a ^ 2 -2b _____

c) quadruplicar o número t aumentado pela metade o número m _______ t ^ 4 + m / 2 _____

d) a diferença entre o produto do produto do número x e o número y e o quadrado do número

The____xy - x ^ 2-y ^ 2 _____

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A kite flying in the air has a 78-string attached to it, and the string is pulled taut. The angle of elevation of the kite is 52

Basile [38]

Answer:

sine 52 degrees = height / 78

height = 78 * sine 52

height = 78 * 0.78801

height = 61.46478 feet

rounded to nearest tenth 61.5 feet

Step-by-step explanation:

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3 years ago

Which system of linear equations will have the same solution as that of the given system of linear equations

Ksenya-84 [330]

Answer:

Option 1 is correct.

Step-by-step explanation:

Given two linear equations to us are ,

$\qquad 3x + 7y = 10 \\\\ \qquad x + y = 2$

And we have to find which system of linear equations have same answer .

On considering option (1) which is ,

$\qquad 3x + 7y = 10 \\\\ \qquad 2x + 2y = 4$

On taking the second equation in this ,

$=> 2x + 2y = 4 \\\\=> 2( x + y ) = 4 \\\\=> x+y =\dfrac{4}{2}}\\\\\boxed{\red{\bf => x + y = 2 } }$

This is same as the second one given in the Question . And the first one is already same .

Hence option (1) is correct . 

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3 years ago

Simplify. −7 + {12 + 3[30 − 5(1 + 4)]}

Igoryamba

Answer:

-7+(12+3(30-5(1+4)= 20

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3 years ago

What is the vertex of the graph of g(x)=|x-9|+3

mart [117]

Look at h(x) = |x-9|. The vertex of this absolute value function graph is at (9,0).

Sometimes it helps to work on a simpler problem first, which is why I've introduced h(x) = |x-9|.

The vertex of g(x)=|x-9|+3 is 0+3, or 3; we translate the entire graph of g(x)=|x-9| upward by 3 units. Thus, the vertex of g(x) is (9,3).

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3 years ago

13(6 –x) –4(3x+12)=0

gayaneshka [121]

Answer:

Step-by-step explanation:

Multiply the first bracket by 13

Multiply the second bracket by -4

13(6-x)-4(3x+12)=0

78-13x-12x-48=0

30-25x=0

-25x+30-30=0-30

-25x=-30

Divide by -25 for -25x and-30

x=30/25 reducing: 6/5= 1 1/5

Answer can be 30/25 or 6/5 or 1 1/5

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4 years ago