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madreJ [45]
2 years ago
14

Is it always true that multiplying a negative factor by a positive factor results in a negative? If yes, provide an example. If

no provide a counter-example. PLEASE ANSWER!
Mathematics
2 answers:
vredina [299]2 years ago
8 0

Answer:

yes

Step-by-step explanation:

-5x5= -25

-1x4= -4

9x-9= -81

no counter example except if u count -2x0=0

Fed [463]2 years ago
3 0

Answer:

yes because -3x4 would be negative 3 four times, reseulting in a negative number

Step-by-step explanation:

hope this helped

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0.4x - 1.2 = 0.15x + 0.8 ?????????
valentina_108 [34]

Answer:

x = 8

Step-by-step explanation:

0.4x - 1.2 = 0.15x + 0.8

0.4x - 1.2 + 1.2 = 0.4x

0.15x + 0.8 + 1.2 = 0.15x + 2

0.4x = 0.15x + 2

0.4x - 0.15x = 0.25x

0.15x + 2 - 0.15x = 2

0.25x = 2

0.25x / 0.25 = x

2 / 0.25 = 8

x = 8

7 0
3 years ago
What is the smallest integer $n$ such that $5n + 3 > -10$?
Nataliya [291]

Answer:

-2

Step-by-step explanation:

5n+3= -10

5n = -13

n = -13/5

= -2.6

question is integer

so answer is -2

8 0
3 years ago
En mi clase hay 30 alumnos. Hoy es el cumpleaños de Marta y regala 2 piruletas de fresa a cada chica y 1 de limón a cada chico.
Alenkasestr [34]

Answer:

La respuesta es solo dividir

Step-by-step explanation:

ara que sepas que hay 30 estudiantes y que se les dieron 49 lolipops a los estudiantes y 2 se los dieron a las niñas y 1 a los niños, todo lo que tienes que hacer es dividir

5 0
3 years ago
Read 2 more answers
It takes 40 minutes for eight people to paint four walls how many minutes does it takes 10 people to paint seven walls
sasho [114]
8r(40)=4

r=1/80  that is the rate for each person...

10rt=7  using r we found before

10(1/80)t=7

t/8=7

t=56 minutes.
8 0
3 years ago
Jack and Jill were buying water jugs jack bought 2 medium sized jugs and 3 large sized jugs for 150 dollars and Jill bought 4 me
Mademuasel [1]

Answer: the cost of one medium sized jug is $60

the cost of one large sized jug is $10

Step-by-step explanation:

Let x represent the cost of one medium sized jug.

Let y represent the cost of one large sized jug.

Jack bought 2 medium sized jugs and 3 large sized jugs for 150 dollars. This means that

2x + 3y = 150 - - - - - - - - - - - 1

Jill bought 4 medium jugs and 12 large jugs for 360 dollars. This means that

4x + 12y = 360 - - - - - - - - - - - 2

Multiplying equation 1 by 4 and equation 2 by 2, it becomes

8x + 12y = 600

8x + 24y = 720

Subtracting, it becomes

- 12y = - 120

y = - 120/ - 12

y = 10

Substituting y = 10 into equation 1, it becomes

2x + 3 × 10 = 150

2x + 30 = 150

2x = 150 - 30 = 120

x = 120/2 = 60

3 0
3 years ago
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