All categories

2 years ago

47 + (-13 + 7)- (-13 -6)

Mathematics

1 answer:

Andrei [34K]2 years ago

6 0

Answer:

Step-by-step explanation:

(-13 + 7) = -6

(-13 -6) = -19

-6 - -19 =13

47+13 =60

You might be interested in

To solve the equation 5sin(2x)=3cosx, you should rewrite it as___.

galina1969 [7]

Answer:

Step-by-step explanation:

We want to solve the equation:

$5\sin(2x)=3\cos(x)$

To do so, we can rewrite the equation.

Recall the double-angle for sine:

$\sin(2x)=2\sin(x)\cos(x)$

By substitution:

$5\left(2\sin(x)\cos(x)\right)=3\cos(x)$

Distribute:

$10\sin(x)\cos(x)=3\cos(x)$

We can subtract 3cos(x) from both sides:

$10\sin(x)\cos(x)-3\cos(x)=0$

And factor:

$\cos(x)\left(10\sin(x)-3\right)=0$

Hence, our answer is A.

*It is important to note that we should not divide both sides by cos(x) to acquire 10sin(x) = 3. This is because we need to find the values of x, and one or more may result in cos(x) = 0, and we cannot divide by 0. Hence, we should subtract and then factor.

5 0

2 years ago

Read 2 more answers

The area of a square is given by and the perimeter is given by , where s is the side length of the square. If the side length of

Thepotemich [5.8K]

The area of a square is always:

A=s^2 where s=side length, in this case:

A=4^2=16 in^2

The perimeter of a square is always:

P=4s, in this case:

P=4*4=16 in

6 0

3 years ago

Read 2 more answers

How do you write 2.92 trillion in scientific notation form

yaroslaw [1]

Answer:

2.92 × 10⁹

Step-by-step explanation:

im not exactly sure if im right but this is what i know, lmk if its wrong

7 0

2 years ago

Read 2 more answers