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3 years ago

A square has a length of 2x+7 find a simplified expression that represents area

Mathematics

1 answer:

Ivan3 years ago

5 0

Answer:

area = (2x+7)squared

Step-by-step explanation:

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the price of a sandwich is $4.50 more than the price of a smoothie is d dollars what does the expression

aleksandrvk [35]

So the smoothie would be d+4.50
When it says $4.50 MORE than, it would be adding it to d or the original amount! I hope this helps!

4 0

3 years ago

A scientist need 10 liters of a 20% acid solution for an experiment, but she only has a 5% soliution and a 40% solution. To the

Stolb23 [73]

Answer:

5.7 liters of 5% solution and 4.3 liters of 40% solution is needed to be mixed to get 10 liters of a 20% acid solution

Step-by-step explanation:

Let

x = Amount of 5% solution needed

(10 - x) = Amount of 40% solution needed

Equation:

5% of x + 40% of (10-x) = 20% of 10

0.05x + 0.40(10-x) = 0.20 * 10

Open parenthesis

0.05x + 4.0 - 0.40x = 0.20 * 10

Collect like terms

4.0 - 0.35x = 2.0

Add 0.35x to both sides of the equation

4.0 = 2.0 + 0.35x

Subtract 2.0 from both sides of the equation

2.0 = 0.35x

Divide both sides by 0.35

2.0 / 0.35 =x

5.7 = x

5.7 liter of the 5% solution is needed

Next is to find the amount of 40% solution needed

(10 - x) = Amount of 40% solution used

Amount of 40% solution used = 10 - 5.7

= 4.3

4.3 liters of 40% solution is needed

6 0

3 years ago

The graphs of f(x)=2x+4 and g(x)=10−4x intersect at (1, 6) . What is the solution of the equation 2x+4=10−4x ? Enter you

Yuliya22 [10]

Answer:

$x=1$

Step-by-step explanation:

we have

$f(x)=2x+4$ -----> equation A

$g(x)=10-4x$ ----> equation B

we know that

The solution of the system of equations is the point $(1,6)$

The solution of the equation $2x+4=10-4x$ is equal to the x-coordinate of the solution of the system of equations

therefore

The solution is $x=1$

7 0

4 years ago

Jonathan sells 5 packs of Gatorade for $20. If someone bought 15 packs of Gatorade how much money did Johnathan get?

Rudik [331]

Answer:

none cuz dude to thirsty jk

7 0

3 years ago

If f(x) =6x, find f(4)

nasty-shy [4]

So, we are dealing with function notation.

F(x) can be thought of as Y= if it's easier.

So f(4) is what is the output value if X = 4. So we just plug 4 into the function wherever we see x.

$f(x)=6x\\f(4)=6(4)\\f(4)=24$

8 0

3 years ago