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docker41 [41]
3 years ago
13

10u + 7 = 8 ( 2u - 4 ) - 9

Mathematics
2 answers:
Flura [38]3 years ago
7 0

Answer:

8

Step-by-step explanation:

mr Goodwill [35]3 years ago
3 0
10u+7=8(2u-4)-9
10u+7=16u-32-9
10u+7=16u-41
6u=48 /:6
u=8
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Would the same methods work if both the numbers were positive? What if one of the numbers were positive and the other negative?
Mnenie [13.5K]
If you multiply a positive by a negative it’s negative same goes for dividing if it’s two negatives then the answer is positive hope this helped
5 0
4 years ago
Leon evaluated the expression (–4a – 6) + a2 for a = 8. (-4(8) - 6) + 82 (-32-6) + 82 (-38) + 82 (-38) + 16 –19 + 16 –3 Analyze
zhuklara [117]

Answer:

Option 3 is correct as  Leon multiplied 8 by 2 when he should have raised 8 to a power of 2.

Step-by-step explanation:

Given : Leon evaluated the expression (-4a-6)+a^2 for a=8

(-4(8) - 6) + 82 ,  (-32-6) + 82 , (-38) + 82 ,  (-38) + 16 –19 + 16 –3

Leon's work is not so proper , Option 3 is correct as  Leon multiplied 8 by 2 when he should have raised 8 to a power of 2.

Correct steps are :

Step 1 :    (-4a-6)+a^2

Step 2 : Put a=8 in the equation we get,

=(-4(8)-6)+8^2

=(-32-6)+8^2

=-38+8^2

=-38+64

=26  

Therefore, correct answer is 26.

7 0
3 years ago
Read 2 more answers
How could i find the value of this expression?​
Sladkaya [172]

Answer:

you plug in the numbers

Step-by-step explanation:

Please mark brainliest!!

4 0
3 years ago
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A company conducted a survey to see wether its new toothpaste was more popular with children or adults. Of the children surveyed
Sholpan [36]

Answer:

C

Step-by-step explanation:

To find the percent of adults who use toothpaste, we divide the number of adults who use toothpaste by the total adults.

0.08/0.75

The answer is about 11 percent, so C is the true statement.

3 0
3 years ago
Read 2 more answers
What does "Time (s)" represent in the graph?
vekshin1

Answer:

the independent variable

Step-by-step explanation:

tome is the independent variable

position is the dependent variable

6 0
3 years ago
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