Can someone help me with those exercises please?

Mathematics

1 answer:

Ymorist [56]3 years ago

3 0

What exercises are you talking about?

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Need help please!!!!

Orlov [11]

Answer:

$\frac{m + n}{m - n } = \frac{ - 8 + 4}{ - 8 - 4}$

=-4/-12=1/3 is your answer

5 0

3 years ago

The steps below show the incomplete solution to find the value of x for the equation

mafiozo [28]

Step 1: 6x - 2x - 5 = -6 + 21
Step 2: 6x - 2x - 5 = 15
Step 3: 4x - 5 = 15

The next step would be to add 5 to both sides of the equation.
so Step 3: 4x - 5 = 15 .......add 5 to both sides would make
Step 4: 4x = 20

So after the next step you would have 4x = 20

Hope this helps! :)

7 0

3 years ago

Find the value of x.<br> Right triangle: Hypotenuse is 11, base is x, angle is 22 degrees.

kirill [66]

We know that the trigonometric identity that uses the adjacent side and the hypotenuse is cosine. We can set this up as:
$cos(22) = \frac{x}{11}$

We need to solve for x, so let's isolate it:
$x = 11cos(22) = 10.2$

So, x = 10.2 units

8 0

3 years ago

3kg a hit with a force of 9 Newton’s

Anna [14]

Step-by-step explanation:

(3000N) F–D = m a2. D= F–m a2. = 3000N– 1200kg × 0.75 m s-z.

3 0

3 years ago

Find 4(6a−5)−(9a+1).

stira [4]

Answer:

15a-21

Step-by-step explanation:

could be wrong though

4 0

3 years ago