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3 years ago

Simplify 3 ∙ 2x. What is the coefficient? A)2 B)3 C)6 D)x

Mathematics

2 answers:

vivado [14]3 years ago

6 0

Coefficient is a number written before a variable. in this case that's one sum therefore the answer is 6

PSYCHO15rus [73]3 years ago

6 0

Answer:

The simplification of 3 . 2x is 6x and coefficient is 6 .

Option (C) is correct .

Step-by-step explanation:

As given

= 3 . 2x

This is also written as

= 3 × 2x

= 6x

Definition of coefficient

Any number which is multiply by variable is called coefficient .

Thus 6 is the coefficient .

Therefore the simplification of 3 . 2x is 6x and coefficient is 6 .

Option (C) is correct .

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In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on th

Serggg [28]

Answer:

The weighted average is of 69.94.

Step-by-step explanation:

Weighted average:

The weighed average is found multiplying each grade by its respective weight.

The grades, and weights are:

67 on the lab, with a weight of 23% = 0.23

69 on the first major test, with a weight is 21.5% = 0.215

85 on the second major test, with a weight is 21.5% = 0.215.

63 on the final exam, with a weight of 34% = 0.34.

Weighted average:

$A = 0.23*67 + 0.215*69 + 0.215*85 + 0.34*63 = 69.94$

The weighted average is of 69.94.

8 0

3 years ago

When 1 is subtracted from three- tenths of the number, the result is equal to one-fifth of a number. What is the number

Bas_tet [7]

Based on the given mathematical statement, it can be rewritten into a mathematical equation to simplify and to be solved easily. The statement, "When one is subtracted from three-tenths of a number" corresponds to the equation, 3x/10 - 1, that is assuming the number is represented by the variable x. This is equal to one-fifth of the number. In other words,
3x/10 - 1 = x/5
x = 10

8 0

2 years ago

Paul is saving for a down payment to buy a house. The account earns 13% interest compound quarterly, and he wants to have $15,00

Tatiana [17]

Answer:

The principal must be = $8991.88

Step-by-step explanation:

Formula for compound interest is:

$A = P(1 + \frac{r}{n})^{nt}$

Where A is the amount after 't' years.

P is the principal amount

n is the number of times interest is compounded each year.

r is the rate of interest.

Here, we are given that:

Amount, A = $15000

Rate of interest = 13 % compounded quarterly i.e. 4 times every year

Number of times, interest is compounded each year, n = 4

Time, t = 4 years.

To find, Principal P = ?

Putting all the given values in the formula to find P.

$15000 = P(1 + \frac{13}{400})^{4\times 4}\\\Rightarrow 15000 = P(1 + 0.0325)^{16}\\\Rightarrow 15000 = P(1.0325)^{16} \\\Rightarrow 15000 = P \times 1.66817253\\\Rightarrow P = \dfrac{15000}{1.66817253}\\\Rightarrow P \approx \$8991.88$