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3 years ago

Solve this equation 3x + 1 = 10

Mathematics

1 answer:

slava [35]3 years ago

7 0

Steps:
1. Subtract 1 from both sides
2. 3x=9
3. Divide both sides by 3
4. Your answer is
X=3

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3 years ago

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Answer:

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Step-by-step explanation:

$y = - 2x$

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3 years ago

Amy is 9 years older than her brother john. their combined age is 23. write an expression to represent johns age (use x)

dedylja [7]

Let x the age of John
Amy's age = x + 9
from question, we get,
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3 years ago

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Answer:

Step-by-step explanation:

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7 0

3 years ago

Read 2 more answers

A scientist had 3 1/2 liters of vinegar. He poured 2/3 of the vinegar into beaker. He then used 3/5 of the vinegar in the beaker

valentinak56 [21]

Answer:

A)2100 ml

Step-by-step explanation:

Given total vinegar is 3 1/2 liters and the used vinegar is 3/5 of the vinegar in the beaker:

#First calculate the amount of vinegar not poured in the beaker:

$V_o=V_t-V_b\\\\=3\frac{1}{2}(1-\frac{2}{3})\\\\=1\frac{1}{6}$

#Calculate amount of vinegar used in experiment:

$V_b=\frac{2}{3}V_t=\frac{2}{3}(3\frac{1}{2})=2\frac{1}{3}\\\\V_u=\frac{3}{5}V_b=\frac{3}{5}\times 2\frac{1}{3}=1\frac{2}{5}$

#The unused vinegar is therefore calculated by subtracting the used vinegar from the total at the start of the experiment:

$V_r=V_t-V_u\\\\=3\frac{1}{2}-1\frac{2}5}\\\\=2\frac{1}{10}\times 1000\ ml\\\\=2100\ ml$

Hence, the unused vinegar is 2100 ml

8 0

3 years ago