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katen-ka-za [31]
3 years ago
9

Write an equation use g, 21,7

Mathematics
1 answer:
algol [13]3 years ago
5 0

Answer: 7g=21

g=3

Step-by-step explanation:

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A chemist has 30% and 40% solutions of acid available. How many liters of each solution should be mixed to obtain 65 liters of 3
mars1129 [50]

Answer:

30 = 80 %

40= 20 %

Step-by-step explanation

I'm sorry for not writing how to do it but it's something like if 30 = 100 then if we had 40 occupying 20 percent of that acid then we will get 32 percent

5 0
3 years ago
If you roll two fair six-sided dice, what is the probability that both dice show an odd number?
OLEGan [10]

Answer:

1/4

Step-by-step explanation:

Both dice have odd numbers 1, 3, 5. The chances of getting an odd number on each number is 3/6

The probability of getting odd numbers on both is:

3/6 ⋅ 3/6 = 9/36 = 1/4

5 0
4 years ago
Read 2 more answers
Express $122 for 14 hours as a unit rate
FromTheMoon [43]

Answer:

8.70 dollars/per hour

Step-by-step explanation:

122 ÷ 14 ≈ 8.7

3 0
3 years ago
Find (f + g)(x) and its domain.
Nostrana [21]

Answer:

The domain of function( f+ g)(x) ( (-∞,∞))

Step-by-step explanation:

Given  ( f + g)x = f(x) +g(x)

The domain of function (f + g)(x)  is (-∞,∞)

<em>Example:-</em>

<em>f(x) = 2 x² + 3x and  g(x) =  4x² +3</em>

<em>(f + g)(x) = f(x) +g(x)</em>

<em>              =  2 x² + 3x + 4 x² + 3</em>

<em>             =  6x ² + 3 x + 3</em>

<em>The domain of  (f + g) (x)  is ( -∞,∞))</em>

3 0
3 years ago
The annual household cost of telephone service in the US increased at a relatively constant rate of $27.80 per year from 1981 to
Serjik [45]
B: 914-20(27.80)=X, multiply: 20(27.80)=556, 914-556=$358 :A.

C: 914-27.80=$886.20 :)
3 0
3 years ago
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