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Lina20 [59]
2 years ago
11

Write and solve an equation to find the number: The sum of three times a number and 12 is 45.

Mathematics
2 answers:
pashok25 [27]2 years ago
4 0

Answer:

Step-by-step explanation:

Equation

3x +12 = 45                  Subtract 12 from both sides

Solution

3x + 12 - 12 = 45 - 12

3x  = 33                       Divide by 3

3x/3 = 33/3

x = 11

Mamont248 [21]2 years ago
3 0

Step-by-step explanation:

3x+12=45

3x=45-12

3x=33

3x/3=33/3

x=11

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Poppy felix and Alex sell 700 raffle tickets between them.
prohojiy [21]
First 700-25=675

Poppy= 2F (F as in Felix, since she sells twice as much)
Alex = (Now equals 2F as well, cus we already took away the 25)
And well.... Felix is just felix so add that all up

F+F+F+F+F=5F

675/5=135!
Now according to that 135 is how many felix sold

Felix=135
Poppy=270
Alex=295
7 0
3 years ago
В субботу музейный комплекс «Старый Орхей» посетили 3 группы по 30 туристов ,а в воскресенье —5 групп по 30 туристов.Сколько все
cricket20 [7]
Во-первых, вы должны умножить 3 и 30. Это дает 90. Затем умножить 5 и 30. Это дает 150. Наконец, сложите вместе, чтобы получить 240. 240 туристов.

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8 0
3 years ago
Un camion transporta aceite de oliva en un deposito con forma de cilindro de 1m de radio y 5m de altura . Si en cada viaje que r
goldfiish [28.3K]

Answer:

15.71 metros cúbicos de aceite transportará el depósito del camión.

Step-by-step explanation:

Un camión transporta aceite de oliva en un deposito con forma de cilindro de 1 m de radio y 5 m de altura.

Para calcular la cantidad de aceite que transportará se debe calcular el volumen del depósito, siendo con forma de cilindro. El volumen de dicha figura es calculada como V=π*r²*h, donde r es el radio y h es la altura.

En este caso, el volumen del depósito cilíndrico es:

V=π*( 1 m)²*5 m

Resolviendo:

V=15,71 m³

<u><em>15.71 metros cúbicos de aceite transportará el depósito del camión.</em></u>

4 0
2 years ago
Intrigued by a 2013 study at the University of Nebraska that suggested marijuana smokers may be thinner than other adults, a gro
Reptile [31]

this question is incomplete, the complete question is:

1. is this model effective

2. what is the correlation coefficient for this data.

3. for a student with a bmi of 25, what is the predicted number of hours under the influence.

Step-by-step explanation:

1. first of all this model is not effective because we have r² as 0.134. this tells us that only 13.4 percent of the of the variations that exist in this data has been explained by the model

1. we get the correlation coefficient by

+-\sqrt{r^{2} }

the regression slope coefficient has a negative sign. this is what we would use in calculating the correlation coefficient.

-\sqrt{r^{2} }

= -√0.134

= -0.366

therefore the correlation coefficient is -0.366

2. to get the number of hours under the influence with a bmi of 25

the equation is

49.2-1.15bmi

= 49.2-1.15(25)

= 49.2-28.75

= 20.45

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What is the area of the triangle?
ad-work [718]

Answer:

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Step-by-step explanation:

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3 years ago
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