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saw5 [17]
2 years ago
6

Evaluate the expression when a=

Mathematics
1 answer:
Olin [163]2 years ago
3 0

Answer:

\frac{2}{15}

Step-by-step explanation:

Substitute the values for a and c into the expression

- 2c + a

= - 2× \frac{3}{10} + \frac{11}{15}

= - \frac{3}{5} + \frac{11}{15}

= - \frac{3(3)}{5(3)} + \frac{11}{15}

= - \frac{9}{15} + \frac{11}{15}

= \frac{2}{15}

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A bag contains 4 types of coins. - 2 Pennies - 2 Nickels - 2 Dimes - 4 Quarters A coin will be randomly selected from the bag. W
Viefleur [7K]

Answer:

0.4

Step-by-step explanation:

possible outcomes = 2+2+2+4=10

favourable = 4

4/10 = 2/5

2/5 = 0.4

7 0
3 years ago
What is the value of n ?
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n=10

Step-by-step explanation:

5n-20=3n

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What is the equivalent to 3/20 as a fraction
aalyn [17]
6/40 is equalvilant because all you have to do is double or simplify it by 2
5 0
2 years ago
Read 2 more answers
2. Use the following picture for this question:
Art [367]

Answer:

a.  24\sqrt{3}  and 41.6

b.  52.1

Step-by-step explanation:

a.

Considering the left side triangle the blue dotted side is the side "opposite" to the angle given and the side 24 is the side that is "adjacent" to the angle given. The trigonometric ratio tan relates opposite to adjacent. Also, let the blue dotted side be y.

<u>Note:</u> the exact value of tan 60 is \sqrt{3}

Thus, we can write Tan(60)=\frac{y}{24}\\y=24*Tan(60)\\y=24*\sqrt{3} \\y=24\sqrt{3}

Approximate value (rounded to nearest tenth):  24\sqrt{3} =41.6

b.

Considering the triangle to the right, the side "opposite" to the angle given (53 degrees) is 41.6 (just found in part (a)) and the side "hypotenuse" (side opposite to 90 degree angle) is x. The trigonometric ratio sine relates opposite and hypotenuse.

Thus we can write and solve:

Sin(53)=\frac{41.6}{x}\\x=\frac{41.6}{Sin(53)}=52.1

4 0
3 years ago
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