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STALIN [3.7K]
3 years ago
7

How do you simplify -7(5-12),7(-3-8),-6(-5+9),12(-8+2)?Show work!

Mathematics
2 answers:
Taya2010 [7]3 years ago
7 0
Times by the outside number than add/subtract 
tamaranim1 [39]3 years ago
6 0
First problem:
-7(5-12) Write the problem.
-7(-7) Subtract within parentheses.
49 Multiply, and due to both being negatives its a positive answer.

Second problem:
7(-3-8) Write the problem.
7(-11) Subtract within parentheses.
-77 Multiply, due to one being negative its a negative answer.

Third problem:
-6(-5+9) Write the problem.
-6(4) Add within parentheses.
-24 Multiply, due to one being negative its a negative answer.

Fourth problem:
12(-8+2) Write the problem.
12(-6) Add within parentheses.
-72 Multiply, due to one being negative its a negative answer.

I hope this helps you understand simplifying these sort of problems! :D
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Write the standard equation of the circle below.
Natasha_Volkova [10]

Answer:

(x - 3)² + (y - 2)² = 2

Step-by-step explanation:

Every negative symbol in parentheses give you the OPPOSITE terms of what they really are, so you will be moving 3 blocks <em>east</em><em> </em>up 2 blocks <em>north</em><em>.</em><em> </em>Then, we have to know the size of the radius on each side all around from the centre of the circle, which in this case is 2, not 4. Although R² is part of the formula, you do not square it because 2 is the square of 1,414213562:

2 ≈ 1,414213562²

If it was 4, 4 would be considered the square of 2.

I am joyous to assist you anytime.

5 0
3 years ago
Read 2 more answers
Ao cobrar uma falta em um jogo de futebol, uma jogador imprime à bola a uma velocidade de 43,2 km/h. Sabendo que a bola gasta 3
Yakvenalex [24]

Answer:

B

Step-by-step explanation:

Nesta questão, estamos interessados ​​em calcular a distância percorrida se um jogador correr a uma velocidade de 43,2 km / h por 3 segundos.

Matematicamente; a distância percorrida = velocidade * tempo

O problema que temos aqui é que nossas unidades não são consistentes.

A melhor maneira de fazer isso é ter unidades consistentes em metros por segundos e segundos, pois nossa resposta está em metros.

Portanto, a conversão que precisamos fazer aqui é converter 43,2 km / h em metros por segundo Matematicamente, sabemos que existem 1000 m em um quilômetro.

Da mesma forma, uma vez que 60 segundos fazem um minuto e 60 minutos fazem uma hora, o número de segundos em uma hora é 60 * 60 = 3.600 segundos

Assim, convertendo 43,2 km / h em m / s, temos; (43,2 * 1000) / 3600 = 12 m / s

Portanto, a distância percorrida em metros seria agora; velocidade em m / s * tempo em segundos = 12 m / s * 3 segundos = 36 m

5 0
4 years ago
HS: Algebra 2A [M] (Prescriptive) (GP)/ 5 Quadratic Functions
ipn [44]

Answer:

Linear, the linear term is -21x and the constant term is -20. Last option is the answer

Step-by-step explanation:

We are given the following function:

y = (x - 5)(5x + 4) - 5x^2

First we have to simplify y, before solving the question:

y = (x - 5)(5x + 4) - 5x

Applying the distributive property:

y = 5x^2 + 4x - 25x - 20 - 5x^2

y = 0x^2 - 21x - 20

y = -21x - 20

No quadratic term, so it is linear.

The linear term is -21x and the constant term is -20.

4 0
4 years ago
Write the point-slope form of the equation of the line that passes through the origin and has a slope of 2. Include your work in
EleoNora [17]

what are the coordinates?

can u provide a pic of a graph provided with the question?

7 0
4 years ago
Before his shopping spree, Nguyen owned
nignag [31]

first find the difference

24-3 =21

then the ratio is 3:21

5 0
3 years ago
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