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3 years ago

I WILL GIVE BRAINLIEST TO WHOEVER IS CORRECT

Mathematics

2 answers:

Nina [5.8K]3 years ago

8 0

The answer is the 3rd option. The first change is a rotation then a reflection.

Masteriza [31]3 years ago

5 0

(x,y) -->(-x, -y) ....180 rotation either clockwise or counterclockwise

then from (x,y) _> (x, -y) ....reflect over x axis

Answer is the third option

ABC is congruent to A'B'C' because rules represent a rotation followed by a reflection which is a sequence of rigid motions

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Debbie finished her algebra test early so she decided to check each of her answers. After checking her answer to question #10, s

Ber [7]

Answer:

the first mistake was in step 2

Step-by-step explanation: she should not have moved the y to the other side first, she should have moved the other numbers to get one of the y's alone

6 0

3 years ago

Margaret drove to a business appointment at 80 mph. Her average speed on the return trip was 70 mph. The return trip took her 1/

Gnoma [55]

Margaret traveled 80 miles to the appointment.

Step-by-step explanation:

Given,

Speed while driving for appointment = 80 mph

Speed while coming back = 70 mph

Let,

x be the time taken for the trip

y be the distance covered

Distance = Speed*Time

y = 80x Eqn 1

Time taken in return trip = x+1/7

y = 70(x+1/7)

$y=70x+10$ Eqn 2

Putting value of y from Eqn 1 in Eqn 2

$80x=70x+10\\80x-70x=10\\10x=10$

Dividing both sides by 10

$\frac{10x}{10}=\frac{10}{10}$

x = 1 hour

Putting x = 1 in Eqn 1

$y=80(1) \\y=80$

Margaret traveled 80 miles to the appointment.

Keywords: linear equation, substitution method

Learn more about substitution method at:

#LearnwithBrainly

5 0

4 years ago

Simplify by finding the product of the polynomials below. Then Identify the degree of your answer. When typing your answer use t

nexus9112 [7]

Solution:

Given:

$(2x^2+2x+1)(4x-1)$

To get the product of the polynomial; we use the distributive property of multiplication.

$a(b+c)=ab+ac$

$\begin{gathered} (4x-1)(2x^2+2x+1) \\ 4x(2x^2+2x+1)-1(2x^2+2x+1) \\ =8x^3+8x^2+4x-2x^2-2x-1 \\ \text{Collecting similar terms together and simplifying further;} \\ =8x^3+8x^2-2x^2+4x-2x-1 \\ =8x^3+6x^2+2x-1 \end{gathered}$

Therefore, the product of the polynomials is;

$8x^3+6x^2+2x-1$

3 0

1 year ago

Nathan invests money in an account paying simple interest. He invests $180 and no money is added or removed from the investment.

sweet-ann [11.9K]

I think this question is technically asking
196.20 is what percent of 180, if so it would be 109%

https://www.percentagecal.com/answer/180-is-what-percent-of-196

5 0

3 years ago

Read 2 more answers

Please answer the question in the photo:

Vika [28.1K]

Answer:

$\fbox{8x+36}$

Step-by-step explanation:

1. Use the distributive property to write the problem without parentheses. The distributive property says that you can multiply a number next to parentheses by all the numbers inside parentheses. The picture below explains.

$4(2x+9)=\\\\(4*2x)+(4*9)=\\\\4(2x+9)= 8x+36$

Therefore, your answer is

$\fbox{8x+36}$

6 0

3 years ago