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3 years ago

Hi what is answer plz

Mathematics

1 answer:

34kurt3 years ago

6 0

the answer is 12 lolllo

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(4x+1)(3x-7) yup it hurts

musickatia [10]

Answer:

12x^2-25x-7

Step-by-step explanation:

Multiply each term by its counterpart in the parenthesis.

4x*3x and 4x*-7

1*3x and 1*-7

This gives you 12x^2-4x*7+3x-7 when the like terms are combined.

Collect the like terms, which will give you 12x^2-25x-7

7 0

3 years ago

Read 2 more answers

Which expression can go in the blank to make the equation true? 60 – 31.2 + ? = 0 a. 60 – 31.2 b. -60 + (-31.2) c. 31.2 - 60 d.

Ne4ueva [31]

Answer:

Step-by-step explanation:

Given that

60 – 31.2 + ? = 0

$\Rightarrow ?=31.2-60$

This is the same as the expression in option (c) 31.2-60.

Hence, option (c) is correct.

6 0

3 years ago

How many different three-digit numbers can be written using digits from the set 5, 6, 7, 8, 9 without any repeating digits?

suter [353]

Answer: 60 different numbers can be formed

Step-by-step explanation:

Note that we have 5 different digits, and we must select 3 of them. They should not be repeated

The order of selection is important in this case, because the number 532 is not the same as the number 235.

So we have a permutations problem, where we have a set of n elements and we want to choose r from them.

Then we define the permutacion as:

$nPr=\frac{n!}{(n-r)!}$

In this case note that n=5 because there are 5 elements in the set.

r = 3 because we combine the elements to form three-digit numbers

Then:

$5P2=\frac{5!}{(5-3)!}$

$5P2=\frac{5!}{2!}$

$5P2=\frac{5*4*3*2!}{2!}$

$5P2=5*4*3$

$5P2=60$

4 0

3 years ago

ONLY ANSWER IF YOU KNOW, SHOW WORK

yulyashka [42]

Answer:

hello,

Step-by-step explanation:

$cos(3\theta)+cos(4\theta)\\\\=2*cos(\dfrac{4\theta+3\theta}{2} )*cos(\dfrac{4\theta-3\theta}{2} )\\\\\boxed{=2*cos(\dfrac{7\theta}{2} )*cos(\dfrac{\theta}{2} )}$

6 0

3 years ago

Can anyone give me the answer to this ? i’m really confused

Marat540 [252]

Answer:

Step-by-step explanation:

3 0

4 years ago