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elena-s [515]
2 years ago
7

Helphelphelphelphelphelphelphelphelphelp

Mathematics
2 answers:
victus00 [196]2 years ago
8 0

Answer:

u=-6

Step-by-step explanation:

Ludmilka [50]2 years ago
5 0

Answer: u = -6

Step-by-step explanation:

first, we move the terms.

5u - 9u = 30 - 6

then, i collected the like terms and calculated them.

-4u = 24

then, i simply divided both sides.

u = -6

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Need now for study guide
likoan [24]

Answer:

17 cm.

Step-by-step explanation:

Because 12 cm + 5 cm. is 17  cm.

8 0
3 years ago
Complete the squar3
cricket20 [7]

9514 1404 393

Answer:

  1. 4
  2. -2
  3. 4
  4. 2
  5. -2±√2

Step-by-step explanation:

In order to fill the first blank, we need to look at the second line to see what the coefficient of x is.

  1. x² +<u> </u><u>4 </u>x +2 = 0

The constant is subtracted from both sides to get the second line.

  2. x² +4x = <u> -2 </u>

The value that is added on the third line is the square of half the x-coefficient: (4/2)² = 4

  3. x² +4x +<u> 4 </u> = -2 +4

On the fourth line, the left side is written as a square, and the right side is simplified. The square root is taken of both sides.

  4. √(x +2)² = ±√<u> 2 </u>

Finally, 2 is subtracted from both sides to find the values of x.

  5. x = <u> -2 ±√2 </u>

8 0
2 years ago
James works in a sporting goods store and earns $324 a week and 5% of his sales. One week James earned $432. What were his sales
Bogdan [553]

Answer:

His sales that week were $2,160.

Step-by-step explanation:

First, you have to subtract $324 from the amount he earned that week, to find the 5% he got from sales:

$432-$324=$108

Now, you know that he received $108 that represent 5% of his sales and you can use a rule of three to find the amount that represents 100% which would be his sales that week:

 5%   →    108

100% →      x

x=(100*108)/5=2160

According to this, the answer is that his sales that week were $2,160.

7 0
3 years ago
After a special medicine is introduced into a petri dish full of bacteria, the number of bacteria remaining in the dish decrease
Digiron [165]

Answer:

the answer is 5.5

5 0
3 years ago
Read 2 more answers
David rolls a number cube fifty times. The number 4 comes up twelve times. The number 3 comes up eight times. What is the experi
Maurinko [17]

Answer:

40%.

Step-by-step explanation:

Prob( Rolling a 4) = 12/50

Prob( Rolling a 3) = 8/50

When the combined probabilities contain  an 'OR' we Add the probability values:

Probability of a 3 or a 4  

= 12/50 + 8/50

= 20/50

= 2/5

= 40%.

5 0
3 years ago
Read 2 more answers
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