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melisa1 [442]
3 years ago
6

7+4u=70-3u What is U

Mathematics
2 answers:
ruslelena [56]3 years ago
5 0
7+4u=70-3u \\ 7+4u+3u=70-3u+3u \\ 7+7u=70 \\ 7-7+7u=70-7 \\ 7u=63 \\ 7u/7=63/7 \\ u=9
u=9 is your answer.
Hope this helps!
Sergio039 [100]3 years ago
3 0
7+4u= 70-3u
add 3u to both sides
7+7u=70
subtract 7 from both sides
  7u=63
divide both sides by 7
   u= 9

hope this helps

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120 - 40 divided by 4 x 6 write 2 steps and then answer and i will give u brainliest
astra-53 [7]

Answer:

your answer is 10/3 (fraction)

Step-by-step explanation:

120-40=80

4 x 6=24

80/24=

  1. first divide both sides by four and get 20/6
  2. then divide by 2 to get 10/3 (fraction form)
5 0
3 years ago
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Minimum and maximum value of 2n^2+5n-25=0
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Equations don't have minimum or maximum, functions do.

Function y=2n^2+5n-25 has minimum -28.125, has no maximum.
8 0
2 years ago
Jenny used plastic cone shaped cups to serve punch. The cups were 6 inches in diameter and inches tall. What was the volume of e
Volgvan

Answer:

47.14 in³

Step-by-step explanation:

Here is the complete question

Jenny used plastic cone shaped cups to serve punch. The cups were 6 inches in diameter and 5 inches tall. What was the volume of each cup?

Volume of a cone = \frac{1}{3}πr²h

π = 22/7

Radius = diameter / 2 = 6 /2 = 3 inches

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5 0
2 years ago
How many solutions does the system have? \begin{cases} 5y =15x-40 \\\\ y = 3x-8 \end{cases} ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ ​ 5y=15x−40 y=3x−8 ​ C
Ksenya-84 [330]

Answer:

(C) Infinitely many solutions

Step-by-step explanation:

Converting the lines into the from ax+by+c=0

5y=15x-40\\\Rightarrow 15x-5y-40=0

y=3x-8\\\Rightarrow 3x-y-8=0

\dfrac{a_1}{a_2}=\dfrac{15}{3}=5

\dfrac{b_1}{b_2}=\dfrac{-5}{-1}=5

\dfrac{c_1}{c_2}=\dfrac{-40}{-8}=5

So, \dfrac{a_1}{a_2}=\dfrac{b_1}{b_2}=\dfrac{c_1}{c_2}.

Hence, these lines have infinitely many solutions.

3 0
2 years ago
Is 4 18/12 equal to 5 6/12?
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Answer:

Yes, 4 18/12 is equal to 5 6/12.

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Given that

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11/2 = 11/2

Yes both are equal.

7 0
3 years ago
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