3 years ago

Can someone tell me if I’m right?

Mathematics

1 answer:

mestny [16]3 years ago

8 0

You forgot to expand and simplify it... you only did step one, carry on your doing great 4 marks doesn’t come easy :)

You might be interested in

1. (3x3 + 3x2 - 4x + 5) + (x2 – 2x + x 4) |

KonstantinChe [14]

Answer:

$x^{2} + 3x^{3} + 4x^{2} - 6x + 5$

Step-by-step explanation:

first remove the parentheses

then add the like terms

lastly reorder the terms

6 0

3 years ago

Read 2 more answers

Evaluate. Write your answer as a whole number or as a simplified fraction. 12-².4³ = Submit

Delicious77 [7]

$12^{-2} \times 4^3\\\\=(4 \times 3)^{-2} \times 4^3\\\\=4^{-2} \times 4^3 \times 3^{-2}\\\\=4^{-2+3} \times 3^{-2}\\\\=4^1 \times \dfrac1{3^2}\\\\=\dfrac 49$

7 0

2 years ago

An experiment consists of rolling two fair number cubes. What is the probability that the sum of the two numbers will be >3

liraira [26]

Answer: $\bold{\dfrac{5}{12}}$

Step-by-step explanation:

greater than 3 means the sum is either 4, 5, or 6.

There are 15 permutations that meet the criteria:

(1, 3), (1, 4), (1, 5), (1,6)

(2, 2), (2, 3), (2, 4), (2, 5), (2,6)

(3, 1), (3, 2), (3, 3), (3, 4), (3, 5), (3,6)

(4, 1), (4, 2), (4, 3), (4, 4), (4, 5), (4,6)

(5, 1), (5, 2), (5, 3), (5, 4), (5, 5), (5,6)

(6, 1), (6, 2), (6, 3), (6, 4), (6, 5), (6,6)

There are 6²= 36 total permutations for 2 dice.

$Probability=\dfrac{\#\ of\ permutations> 3}{total\ \#\ of\ permutations}\\\\.\qquad \qquad =\dfrac{15}{36}\\\\.\qquad \qquad =\dfrac{5}{12}\\\\$

3 0

3 years ago

In a game, you draw a card with three consecutive numbers on it. You can choose one of the numbers and find the sum of its prime

Angelina_Jolie [31]

So sum the prime factors up

25=5*5, 5+5=10
26=2*13, 2+13=15
27=3*3*3, 3+3+3=9

15>10>9

26 is biggest

pick 26

3 0

3 years ago

Read 2 more answers

Please help!!! I will give brainlist thank you!!!

makkiz [27]

Good evening ,

Answer:

The graph is a line

Step-by-step explanation:

Look at the photo below for the details.

4 0

3 years ago