Can someone please help? i’ll make you a brainliest.

In to see the<br><br> 2x+y=20<br><br> 6x 5y = 12

Andre45 [30]

Answer:

1: x = 10 − $\frac{y}{2}$

y = 20 − 2 x

2: x = $\frac{25}{y}$

y = $\frac{25}{x}$

Step-by-step explanation:

6 0

3 years ago

6. The pressure exerted on the walls of a container by a gas enclosed within it is directly proportional to

d1i1m1o1n [39]

Answer: 5.18 pounds

Step-by-step explanation:

Given: The pressure exerted on the walls of a container by a gas enclosed within it is directly proportional to the temperature of the gas.

Let 'p' denote the pressure exerted on the walls and 't' denotes temperature of the gas.

Then the equation is given by :-

$p=ct$ , where c is the proportionality constant.

Also, the pressure is 6 pounds per square inch when the temperature is 440° F.

$\Rightarrow\ 6=440c\\\\\Rightarrow\ c=\dfrac{6}{440}=\dfrac{3}{220}$

Then, the final equation to calculate pressure becomes :-

$p=\dfrac{3}{220}t$

Now, the pressure exerted when the temperature of the gas is 380°F is given by :-

$p=\dfrac{3}{220}\times380=5.181818\approx5.18\text{ pounds}$

3 0

3 years ago

Three persons had dinner in a restaurant. The total bill came to $51.60.

SVETLANKA909090 [29]

Answer:

Each person tipped $4.30.

Step-by-step explanation:

We know that the total bill was $51.60. The three people paid a 25% tip, which was split evenly among them.

Since the tip is 25%, it will be 25% of the total. Hence:

$0.25(51.6) = \$ 12.9$

The total tip is $12.9.

And since it was evenly split among three people, each person tipped:

$\displaystyle \frac{12.9}{3}=\$ 4.30$

Each person tipped $4.30.

6 0

3 years ago

A type of green paint is made by mixing 2 cups of yellow with 3.5 cups of blue. Find a mixture that will make the different shad

MatroZZZ [7]

Answer:

Step-by-step explanation:

This question is a bit more up to you. The paint has to be a green that is more yellow, so as long as you add more yellow than blue, your answer should be correct! For example 3 cups of yellow to 1 cup of Blue, or 3.3 yellow to 2 cups of blue

5 0

3 years ago

Construct a polynomial function with the following properties: fifth degree, 2 is a zero of multiplicity 3, -2 is the only other

Darya [45]

Answer:

$f(x)=2(x-2)^{3}(x+2)^{2}$

Step-by-step explanation:

we know that

2 is a zero of multiplicity 3 of the polynomial

so

we have that

x=2 is a solution of the polynomial

A factor of the polynomial is

$(x-2)^{3}$ ----> is elevated to the cube because is a multiplicity 3

and the other solution is x=-2

since the polynomial is fifth degree, x=-2 must have a multiplicity 2

so

the other factor of the polynomial is

$(x+2)^{2}$ ----> is squared because is a multiplicity 2

therefore

The polynomial is equal to multiply the factors by the leading coefficient

so

$f(x)=2(x-2)^{3}(x+2)^{2}$

5 0

4 years ago