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katen-ka-za [31]
4 years ago
13

-11 - 5a = 6(5a+4) ?? Totally having a brain fart

Mathematics
2 answers:
mamaluj [8]4 years ago
7 0

Answer: a=-1

Step-by-step explanation:

-11-5a=6(5a+4)

-11-5a=30a+24

-11-5a-30a=24  

-5a-30a=24+11

-35a=35            

a=-1                 

lions [1.4K]4 years ago
4 0
-11-5a=6(5a+4) .... Distribute the 6 to 5a and 4
-11-5a=30a+24 .... Subtract 30a from both sides
-11-5a-30a=24  .... Add 11 from both sides
-5a-30a=24+11 .... Add like terms
-35a=35            .... Divide -35a from both sides
a=-1                  .... Final answer
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What is 40% of 980.
bekas [8.4K]

Answer:

392

Step-by-step explanation:

40% of 980 = 0.4 × 980 = 392

8 0
3 years ago
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The width of a human hair is 2 x 10-5 meters. The width of a piece of sand is 1.5 x 10¹ meters.
Elena L [17]

The difference in the widths, in meters, of the human hair and the piece of sand is 1.4998*10^{-1} m.

It is given in the question that:-

Width of a human hair = 2*10^{-5} m

Width of a piece of sand = 1.5*10^{-1}m

We have to find the difference in the widths, in meters, of the human hair and the piece of sand.

We know that,

Difference between the widths = Width of a piece of sand - Width of a human hair

Hence, we can write,

Difference between the widths =  2*10^{-5} m - 1.5*10^{-1}m

We can write,

1.5*10^{-1}=15000*10^{-5}

Hence,

Difference between the widths =

15000*10^{-5} - 2*10^{-5}= 14998*10^{-5} = 1.4998*10^{-1} m

To learn more about Width, here:-

brainly.com/question/17156323

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8 0
2 years ago
Which of the following are identities? Check all that apply.
Aneli [31]

Answer:

b

Step-by-step explanation:

thats funny i just did that

5 0
3 years ago
What ratios are equivalent to 10:16? What Apply
ASHA 777 [7]

Answer:

The answer is option 1 and 3.

Step-by-step explanation:

Firstly, you have to find the simplest form of the ratio by dividing the common numbers :

10:16 =  \frac{10}{16}  =  \frac{5 \times 2}{8}  =  \frac{5}{8}

Given that the simplest ratio is 5:8. Next, you have to simplify all the options given and which is equivalent to 5:8 :

Option 1,

30 \: to \: 48 = 30:48 =  \frac{30}{48}  =  \frac{5 \times 6}{8 \times 6}  = \frac{5}{8}  = 5:8 \: (correct)

Option 2,

25:35 =  \frac{25}{35}  =  \frac{5 \times 5}{7 \times 5}  =  \frac{5}{7}  = 5:7 \: (incorrect)

Option 3,

\frac{40}{64}  =  \frac{5 \times 8}{8 \times 8}  =  \frac{5}{8}  = 5:8 \: (correct)

Option 4,

8:32 =  \frac{8}{32}  =  \frac{1 \times 8}{4 \times 8}  =  \frac{1}{4}  = 1:4\:  (incorrect)

Option 5,

5 \: to \: 15 =  \frac{5}{15}  =  \frac{1 \times 5}{3 \times 5}  =  \frac{1}{3}  = 1:3 \: (incorrect)

4 0
3 years ago
Consider the equation 5/3v +4 + 1/3v = 8. What is the resulting equation after the first step in the equation?
Fed [463]
I hope this helps you



5+1/3v=8-4



6/3v=4



2/v=4



v=2/4


v=1/2
4 0
3 years ago
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