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Aleksandr [31]
3 years ago
8

-3c^2 + 12cd-4d2 from 4c2 + 3cd + 2d2.​

Mathematics
1 answer:
madam [21]3 years ago
6 0

Answer:

828

Step-by-step explanation:

12

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A class of 222 students went on a field trip. They took 9 vehicles, some cars and some me buses. find the number of cars and the
dusya [7]

Answer:

There were 3 cars and 9 buses used for the field trip.

Step-by-step explanation:

Let the number of cars be x

and Number of buses be y.

Total number of vehicles used = 9

Hence,

x+y=9 \ \ \ \ equation \ 1

Also

Each Car carries students = 4

Each Bus carries students = 35

Total Students = 222

Hence,

4x+35y =222 \ \ \ \ equation \ 2

Now multiplying equation 1 by 4 we get;

4(x+y)= 4\times 9 \\4x+4y = 36 \ \ \ \ \ equation \ 3

Now Subtracting equation 3 from equation 2 we get;

4(x+y)= 4\times 9 \\[tex](4x+35y)-(4x+4y) =222-36\\4x+35y-4x-4y=186\\31y = 186\\y = \frac{186}{31} = 6

Now y = 6

∴ x + y = 9 (Given)

x + 6 = 9

x = 9 - 6

x = 3

Hence, There were 3 cars and 9 buses used for the field trip.

3 0
3 years ago
16x to the 3rd / y * 5 y to the second / xy
Rina8888 [55]

Answer:

Final answer is 80x^2.

Step-by-step explanation:

Given expression is \frac{16x^3}{y}\cdot\frac{5y^2}{xy}.

Now we need to simplify this expression as shown below:

\frac{16x^3}{y}\cdot\frac{5y^2}{xy}

=\frac{80x^3\cdot y^2}{y\cdot xy}

=\frac{80x^3\cdot y^2}{xy^2}

=\frac{80x^3}{x}

=80x^2

Hence final answer is 80x^2.

6 0
3 years ago
Suzie is going on vacation and will need to rent a car. She has narrowed it down to two choices. Miller Car Rental charges a $99
Kay [80]

Answer: she would have to drive the quick cars car 160 miles (Fee is included) for it to add up to the Miller car rental car.

Step-by-step explanation:

4 0
3 years ago
The balance of an investment account is $308 more than the balance 4 years ago. The current balance of the account is $4708. Wha
kifflom [539]

Answer:

$4,400

Step-by-step explanation:

Key: B stands for balance.

b+308=4708

b=4,708-308

b=$4,400

8 0
4 years ago
Complete the statement to describe the expression (a+b+c)(d+e+f)
kherson [118]

Answer:

The given expression consists of 2 factors, and each factor contains 3 terms.

Step-by-step explanation:

Given the expression (a+b+c)(d+e+f)

Factors are parts of  expression that are connected by multiplication. we are multiplying  (a+b+c) and (d+e+f) so we said  (a+b+c) and (d+e+f) are factors of the expression.

Hence, there are 2 factors in given expression.

A mathematical expression contains numbers, variables and operators joined by addition, subtraction, multiplication, and division. The parts of the expression that are connected with addition and subtraction are known as terms.

In each factor (a+b+c) and (d+e+f) three terms are connected by addition. Hence, there are 3 terms in both the factors.

7 0
3 years ago
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