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3 years ago

Evaluate: 8 – 4(5) + 12. Work and explanation please!

Mathematics

2 answers:

goldfiish [28.3K]3 years ago

8 0

8-4(5)+12
8-20+12
20-20
0

Hope this helps :)

gogolik [260]3 years ago

3 0

8-4(5)+12
8-20+12
-12+12
0
That should be your answer

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Find (if possible) the complement and the supplement of each angle. (if not possible, enter impossible.) (a) π 10 complement rad

blagie [28]

In this question, we have to find the complement and supplement of the given angles .

Complementary angles are those angles whose sum is 90 degree and supplementary angles are those angles whose sum is 180 degree.

So to find the complement and supplement angles, we need to subtract the given angles from pi/2 and pi respectively .

$\frac{ \pi}{10}
\\
complement \ angle = \frac{ \pi}{2} - \frac{ \pi}{10} \\ = \frac{4 \pi}{10} = \frac{ 2 \pi}{5}
\\
Supplement \ angle = \pi - \frac{ \pi}{10} = \frac{9 \pi}{10}$

$\frac{9 \pi}{10}
\\
Complement \ angle = \frac{ \pi}{2} - \frac{9 \pi}{10} = \frac{-4 \pi}{10} = -\frac{2 \pi}{5}
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Supplement \ angle = \pi - \frac{9 \pi}{10} = \frac{ \pi}{10}$

4 0

3 years ago

A shopkeeper marks his goods at 40% above cost (the price he pays for the goods) and then offers a 25% discount.if a jacket cost

Pachacha [2.7K]

Answer:

A shopkeeper marks:

$200 * 1.4 = $280

Step-by-step explanation:

With a discount of 25%:

$280 * 0.75 = $210

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2 years ago

Find x if 2^x=8^3x-8

Anon25 [30]

Step-by-step explanation:

First we have to same the bases.

As we know 8=2^3.

Replace 8 with 2^3.

Like this .

2^3x=2^3(2x+1).

Now 3x=3(2x+1) distribute 3 by the Barker.

3x=6x+3.

6x+3=3x.

6x-3x=-3.

3x=-3.

X=-1.

5 0

2 years ago

PLz help thank you<br> i will mark Brainliest<br> if right answer

Naddik [55]

Answer:

122

Step-by-step explanation:

for y 11*11 = 121

for x, it's just 1 since 1*1 = 1

and add 121+1

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3 years ago

3x/8-1=5/8<br> How do I start to find out the answer to this equation?

Lapatulllka [165]

(3x) •(8) =(8-1) •(5) multiply the numerator of the 1st fraction by the denominator of the second fraction.

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3 years ago