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mr Goodwill [35]
3 years ago
15

Simplify the expression. 7(x - 1) - 2(x + 1) + 3( x - 4) =

Mathematics
2 answers:
lawyer [7]3 years ago
8 0
7x-7-2x-2+3x-12=8x-21
  I think
KonstantinChe [14]3 years ago
3 0
8x-21 is the correct answer
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Help me I need the answer on paper help me now
ElenaW [278]

Answer:

x = 144

Step-by-step explanation:

Angle sum of heptagon = 900

5x + 90 + 90 = 900
5x + 180 = 900
5x + 180 - 180= 900 - 180
5x = 720
Divide both sides by 5
x = 144

6 0
2 years ago
A drawer contains 12 brown socks and 12 black socks, all unmatched. A man takes socks out at random in the dark. 21. Required in
avanturin [10]

Answer:

6  socks

Step-by-step explanation:

What we must do is calculate the probability of this happening, that he takes out two black socks in the first two taken out.

There are 12 black socks and in total they are 24, therefore the probability of drawing 1 is:

12/24

and now the probability of getting another one is 11 (there is one less outside) and in total they are 23:

11/23

the final probability is the multiplication of these events:

(12/24) * (11/23)

P = 0.24

Now, to know how many you should get, we multiply the probability by the total number of socks, that is:

0.24 * 24 = 5.76

So you must take out at least 6 socks for the above to happen.

6 0
4 years ago
Elizabith uses 23.25 ounces of granola and 10.5 ounces of raisins for 15 servings of tril mix if each serving contains the same
d1i1m1o1n [39]
1.55 ounces of granola and 0.7 ounces of raisins in each serving
5 0
3 years ago
f(x) = x^2 – 3x +18 What is the value of the discriminant of f? How many distinct real number zeros does ſ have?​
seraphim [82]

Answer:

0+=x^2-3x+18

Step-by-step explanation:

I'm smort- but if its wrong I apologize

4 0
3 years ago
A fruit seller purchased 20 kg of apples at Rs 80 per kg and sold them at Rs 85 per kg. find profit and profit percent​
viktelen [127]

Answer:

Profit = Rs 100

Profit %age = 6.25%

Step-by-step explanation:

Cost Price = Rs 80

Cost Price for 20 kg = Rs 1600

Selling Price = Rs 85

<u><em>Profit for 1 kg</em></u> = Rs 85 - Rs 80

=> Rs 5 (For 1 Kg)

<u><em>Profit for 20 kg:</em></u>

=> Rs 5*20

=> Rs 100

<u><em>Now Profit %age:</em></u>

=> \frac{100}{1600}* 100

=> 0.0625 * 100

=> 6.25%

7 0
3 years ago
Read 2 more answers
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