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andrey2020 [161]
3 years ago
9

3xy - 4y when y = 2 and x = 5​

Mathematics
2 answers:
tia_tia [17]3 years ago
7 0

Answer:

22

Step-by-step explanation:

kupik [55]3 years ago
4 0
The answer is 22!! :) mark me as brainliest please so I can help more people ?!
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How do I find the missing
Vsevolod [243]

Answer:

x = 11.4783

Step-by-step explanation:

cos∅ = adjacent / hypotenuse

Since we are dealing with right triangles, we can use trig to help us solve missing values:

cos28° = x/13

13cos28° = x

x = 11.4783

4 0
3 years ago
Helpppp...Round to the nearest hundredth
love history [14]

Answer:

37.68

Step-by-step explanation:

volume= πr²h/3

= 3.14x3²x4/3

=3.14x3x4

= 3.14x12

=37.68

3 0
3 years ago
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If the temperature at which a certain compound melts is a random variable with mean value 120 ???? ???? and standard deviation 2
bogdanovich [222]
Answer:
Temperature is measured in units of temperature.
In SI units,  it is K (degrees Kelvin).
In CGS units, it is °C (degrees Celsius)
In English units, it is °F (degrees Fahrenheit)

Therefore the mean and standard deviation will be measured in the selected units for temperature.
6 0
4 years ago
Melons cost $20 pet Crate, and apples cost $8 per create. an order comes in for a total of 48 crates for $420. what was the numb
Alika [10]

Answer:

The number of melon was 3 and the number of apples was 45.

Step-by-step explanation:

1. Melons cost $20 per crate and apples cost $8 per create. If the total was 48 crates for $420, you can make the following system of equations, where x is the number of melons and y is the number of apples:

\left \{ {{x+y=48} \atop {20x+8y=420}} \right.

2. By applying the Method of substitution, you can solve for y in the first equation and substitute it into the second one to find x. Then, you can substitute the value of x into the first equation to find y:

y=48-x

20x+8(48-x)=420\\20x+384-8x=420\\12x=36\\x=3

3+y=48\\y=45


4 0
4 years ago
Find the value of x
Grace [21]

Answer:

1.2 degrees

Step-by-step explanation:

6 0
3 years ago
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