Carlos made a scale model of his house. The actual width is 30 feet, and the actual length is 45 feet.

URGENT! 40 POINTS! PLEASE HELP!

umka2103 [35]

Answer:

(a) $8 x(5 x-6)=40 x^{2}-48 x$

(c) $\begin{aligned}(x-3)(5 x-6) &=5 x^{2}-21 x+18\end{aligned}$

Step-by-step explanation:

(a) To find verify the answer we need to multiplying the equation $8 x(5 x-6)$

$8 x(5 x-6)=40 x^{2}-48 x$

Thus, this statement is true.

(b) To find verify the answer we need to multiplying the equation $-4 x\left(2 x^{2}+1\right)$

$-4 x\left(2 x^{2}+1\right)=-8 x^{3}-4 x$

Hence, the given statement is false.

(c) To find verify the answer we need to multiplying the equation $(x-3)(5 x-6)$

$\begin{aligned}(x-3)(5 x-6) &=5 x^{2}-6 x-15 x+18 \\&=5 x^{2}-21 x+18\end{aligned}$

Hence, the given statement is true.

(d) To find verify the answer we need to multiplying the equation $(2 x+3)\left(x^{2}+3 x-5\right)$

$\begin{aligned}=(2 x+3)\left(x^{2}+3 x-5\right) &=2 x^{3}+6 x^{2}-10 x+3 x^{2}+9 x-15 \\&=2 x^{3}+9 x^{2}-x-15\end{aligned}$

Hence, the given statement is false.

4 0

2 years ago

Read 2 more answers

At the store for every 6 books sold there were 5 movies sold. What is the ratio of books sold to movies sold?

tatyana61 [14]

Answer:

6,5

Step-by-step explanation:

6 + 5 = 11

6 to 5

6,5

3 0

2 years ago

Help plz know what you are doing!!!!!

andre [41]

Hey!
1. scalene
2. isosoles
7. scalene
8. scalene
5. isosoles
6. isosoles
7. scalene
8. equilateral

5 0

2 years ago

Fran is training for a cycle race. In the first week, she cycles 195 miles. In the second week, she manages 243 miles. To the ne

AleksAgata [21]

Answer:

24.6%

Step-by-step explanation:

243-195=48

48/195=x/100

48 × 100

4800/195= 24.6%

4 0

1 year ago

Please help please please

dezoksy [38]

Look at the picture.

Corresponding angles:

∠1 and ∠5

∠2 and ∠6

∠3 and ∠7

∠4 and ∠8

<h3>Therefore your answer is ∠1 and ∠5</h3>

4 0

2 years ago