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EleoNora [17]
3 years ago
9

Evaluate 4 times a number q plus 25 when q=2

Mathematics
2 answers:
irinina [24]3 years ago
3 0
4q+25
when q=2
4(2)+25
8+25=33
wlad13 [49]3 years ago
3 0
<span>4 times a number q plus 25 
</span>→ 4q+25

As q has the value of 2, we replace the variable.
→ 4(2) + 25

Evaluate the equation
<span>→ 8+25=33</span>

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Answer:

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so, 100 units are 0.2 liters in this example.

that means that 65/100 × 0.2 = 0.13 liters are acid.

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we get a 50% concentration, when we have the same amount of water and acid in the solution (acid is only half of 50% of the solution).

the account of acid remains the same, as we are only adding water.

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4 0
3 years ago
The first term of an AP is -7 and the ratio of the eight term to the third term is 7:1 calculate the common difference
alukav5142 [94]

Answer:

the common difference is 6.

Step-by-step explanation:

Given;

first term of an AP, a = -7

let the common difference = d

The third term is written as;

T₃ = a + 2d

The eight term is written as;

T₈ = a + 7d

The ratio of the eight term to third term = 7:1

\frac{T_8}{T_3} = \frac{7}{1} = \frac{a+ 7d}{a + 2d} \\\\7 =  \frac{a+ 7d}{a + 2d}\\\\Recall, a = -7\\\\7 =   \frac{-7+ 7d}{-7 + 2d}\\\\7(-7 + 2d) = -7+ 7d\\\\-49 + 14d = -7 + 7d\\\\14d -7d = -7 + 49\\\\7d = 42\\\\d = \frac{42}{7} \\\\d = 6

Therefore, the common difference is 6.

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Alisiya [41]

Answer:

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Step-by-step explanation:

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cos32° = \frac{adjacent}{hypotenuse} = \frac{y}{18} ( multiply both sides by 18 )

18 × cos32° = y , then

y ≈ 15.3 ( to the nearest tenth )

5 0
2 years ago
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