All categories

3 years ago

2 - [7+5 - (-4)] show work too, please

Mathematics

2 answers:

Bezzdna [24]3 years ago

7 0

We will use PEMDAS to solve this equation.

2-[7+5-(-4)]

2-[12-(-4)]

2-[16] You can remove the brackets at this point, if you want.

-14

Answer: -14

umka21 [38]3 years ago

5 0

Answer:

-14

Step-by-step explanation:

2- (7+5 - (-4)) ---- add 7 and 5

2 - (12 - (-4)) ----- subtract -4 from 12

2 - 16

= -14

You might be interested in

Special parallelograms

Elza [17]

The answer is 12 because the lines of the parrellel shape he’ll come across each other

7 0

3 years ago

Need help fast plz for my pre calc exam

bezimeni [28]

Answer:

<em>h = 8.54 units</em>

Step-by-step explanation:

<u>The Law of Cosines </u>

It relates the length of the sides of a triangle with one of its internal angles.

Let a,b, and c be the length of the sides of a given triangle, and x the included angle between sides a and b, then the following relation applies:

$c^2=a^2+b^2-2ab\cos x$

Since we know the values of all three side lengths, we solve the equation for x:

$\displaystyle \cos x=\frac{a^2+b^2-c^2}{2ab}$

For the triangle ABC in the image, a=10, b=15, c=13, thus:

$\displaystyle \cos A=\frac{10^2+15^2-13^2}{2*10*15}$

$\displaystyle \cos A=\frac{156}{300}$

$\displaystyle \cos A=0.52$

Thus, A = 58.67°

For the right triangle of height h and hypotenuse 10, we use the sine ratio:

$\displaystyle \sin 58.67^\circ=\frac{h}{10}$

Solving for h:

$h = 10\sin 58.67^\circ$

h = 8.54 units

6 0

3 years ago

Factor −1/9 out of −1/9x−3.

Zanzabum

Answer:

-1/9 (x+27)

Step-by-step explanation:

Divide the whole expression by -1/9.

-1/9x becomes x

-3 becomes + 27

3 0

3 years ago

If X=60, Y=25, and Z=65, what is the tangent of

LekaFEV [45]

Tangent is opposite/adjacent so it would 60/25 which simplifies to 12/5

8 0

3 years ago

Read 2 more answers

Help needed ASAP will give brainliest and 5 STARS RATE

KATRIN_1 [288]

Answer:

The correct choice is D.

4 0

3 years ago