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levacccp [35]
3 years ago
8

2. Given that a = 7, b = 5 and c = 5. Find the square root of 3a + 2b + c

Mathematics
1 answer:
ollegr [7]3 years ago
5 0

Step-by-step explanation:

3a + 2b + c  =  3(7) + 2(5) + 5 \\  = 21 + 10 + 5 \\  = 36 \\  \sqrt{3a + 2b + c}  =  \sqrt{36}  \\  = 6

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I need some help with the question
vagabundo [1.1K]

To solve this you first need to turn your mixed numbers into improper fractions. to do this for 9 \frac{4}{5} you multiply the denominator (5) by the whole number (9) to get 45 and then add that to the numerator (4) to get your new fraction \frac{49}{5}.

You repeat this process with 3\frac{1}{2} to get \frac{7}{2}.

Now that you have two fractions you can multiply by the opposite reciprocal. To do this you flip the second fraction and change the division sign to a multiplication sign like so \frac{49}{5} * \frac{2}{7}

Then, you just multiply the fractions by multiplying the numerators to get 98 and multiplying the denominators to get 35.

Now, to simplify \frac{98}{35} * \frac{2}{7} you first divide both the numerator and denominator by 7 to get \frac{14}{5} * \frac{2}{7}.

Finally, you can take 10 out of the numerator to make 2\frac{4}{5} * \frac{2}{7}

8 0
4 years ago
Solve for e<br><br> 9e+4=−5e+14+13e
Naddik [55]
You would combine like this:
17e=18
Then divide off the sides
17e/17e 18/17e which cross out the 17 e which leaves you with 1.1
5 0
3 years ago
Read 2 more answers
In the school election James ran against Ben for secretary James received 75% of the votes if 240 students voted how many votes
scoray [572]

Answer: James did not received 60 votes.

Step-by-step explanation:

Given: In a school election,

Percentage of votes received by James = 75%

Percentage of voted hadn't received by James = 100% - 75% = 25%

If 240 students voted , the number of votes hadn't received by James= 25% of 240

=\dfrac{25}{100}\times 240\\\\=\dfrac14\times240\\\\=60

Hence, James did not received 60 votes.

3 0
3 years ago
Find the value -(-15)=
spin [16.1K]
The negative in front has a variable of one since there can't just be a negative and so a negative times a negative is a positive so it's 15
7 0
3 years ago
Help please!!!! find the determinant of K
-BARSIC- [3]
The answer is k = 0 and for some reason this has to be 20 characters
6 0
4 years ago
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