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castortr0y [4]
3 years ago
7

Donald has x twenty-dollar bills and 1 ten-dollar bill. How much money does Donald have?

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
4 0

Answer:

10 +(20x)

Step-by-step explanation:

Donald has number of twenty-dollar bills = x

He has ten-dollar bill = 1

Total amount of bills = 10 +(20x)

The amount of the bill that Donald have is 10 + (20x)

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The length of a​ standard-sized rectangular rug is 2 feet longer than the width. Let x be the width. Which of the following quad
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Answer:

B

Step-by-step explanation:

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3 years ago
A car is a vehicle with four wheels.
Alchen [17]
Answer:

If a vehicle does not have 4 wheels, it is not a car.

Dont forget to give brainliest and thanks
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Use the identity (x+y)(x−y)=x2−y2 to find the difference of two numbers if the sum of the numbers is 12 and the difference of th
Natalka [10]

Answer:

The difference of two numbers using identity (x+y)(x-y)=x^2-y^2 is 4.

Step-by-step explanation:

Given:  The sum of the numbers is 12 and the difference of the squares of the numbers is 48.

To find the difference of two numbers using identity (x+y)(x-y)=x^2-y^2

Let the two numbers be a and b, then

Given that the sum of the numbers is 12

that is a + b = 12 .........(1)

Also, given the difference of the squares of the numbers is 48.

that is a^2-b^2=48     ..........(2)

Using given identity  (x+y)(x-y)=x^2-y^2

We have (a+b)(a-b)=a^2-b^2

Substitute the known values, we have,

12(a-b)=48

Divide both side 12 , we have,

(a-b)=4

Thus, the difference of two numbers using identity (x+y)(x-y)=x^2-y^2 is 4.

8 0
3 years ago
Read 2 more answers
The incorrect work of a student to solve an equation 2(y + 6) = 4y is shown below.
Lina20 [59]

Answer:

<h3>⇒ A. 2 should be distributed as 2y + 12, y = 6</h3>

Step-by-step explanation:

Here are the steps to solve this equation:

<u>Given:</u>

First step: 2(y+6)-4y

Use the distributive property.

<u>Distributive property:</u>

<h3>⇒ A(B+C)=AB+AC</h3>

2(y+6)

2*y=2y

2*6=12

2y+12

Isolate the term of y from one side of the equations.

2y+12=4y

Subtract by 12 from both sides.

2y+12-12=4y-12

Solve.

2y=4y-12

Then, you subtract by 4y from both sides.

2y-4y=4y-12-4y

Solve.

2y-4y=-2y

-2y=-12

Divide by -2 from both sides.

\sf{\dfrac{-2y}{-2}=\dfrac{-12}{-2}}

Solve.

Divide the numbers from left to right.

<u>Solutions:</u>

-12/-2=6

\Longrightarrow: \boxed{\sf{y=6}}

  • <u>Therefore, the correct answer is A. "2 should be distributed as 2y+12, y=6".</u>

I hope this helps. Let me know if you have any questions.

4 0
2 years ago
What is the first step when graphing the equation <br> y=-4x+1
Lady bird [3.3K]
The first step would be to plot the y-intercept, which in this case would be 1.
5 0
2 years ago
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