How can you tell if a number is divisible by 3

Answers

Answer 1

Answer: If the sum of the digits of a number is divisible by 3.
621=6+2+1=9
9/3=3

Answer 2

Answer: if 3 can go into that number equally

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Simplify (3x + 5) + (2x - 9) - (4x + 3).x - 7-x - 7-9x - 19x - 1

Simplest form of the expression
3sqrt750+3sqrt2058-3sqrt48.

Answers

$3√(750)+3√(2058)-3√(48)\n=3√(30*25)+3√(42*49)-3√(3*16)\n=15√(30)+21√(42)-12√(3)$

K = 3e + 5 what is the value of k when e = -2

Answers

$K=3e+5 \n\n K=3*(-2)+5 \n\n K=-6+5 \n\n \boxed{K=-1}$

Here is the work:
$K = 3e + 5 \n K=3(-2)+5 \nK=-6+5\n K=-1$

What subjects other than math that use ratios

Answers

Chemistry uses ratios all the time in all of the chemical formulas.

Another subject that uses ratio would be "Statistics"

Select the expression that is equivalent to the polynomial given below. (4x + 3)(3x - 8)

a.) 12x2 - 23x - 24
b.) 12x2 + 41x + 24
c.) 12x2 - 23x + 24
d.) 12x2 - 41x - 24

which would be the best option?

Answers

Answer:

The correct option is c.

Step-by-step explanation:

The given expression is

$(4x+3)(3x-8)$

Using distributive property we get

$4x(3x-8)+3(3x-8)$

Again use distributive property.

$4x(3x)+4x(-8)+3(3x)+3(-8)$

$12x^2-32x+9x-24$

Combine like terms.

$12x^2-23x-24$

Therefore the correct option is c.

Answer:

Step-by-step explanation:

Which term is a measure of the reliability of a research study

Answers

Answer:

Step-by-step explanation:

Reliability in research. Reliability, like validity, is a way of assessing the quality of the measurement procedure used to collect data in a dissertation. In order for the results from a study to be considered valid, the measurement procedure must first be reliable.

A quadratic equation is written in four equivalent forms below. I. y = (x - 1)2 - 49 II. y = x2 - 2x - 48 III. y = (x + 6)(x - 8) IV. y = x(x - 2) - 48 Which of the forms shown above would be the most useful if attempting to find the x-intercepts of the quadratic equation?

Answers

The x-intercept also known as the root of a quadratic can be found by solving the equation with respect to x.

III is the most useful for finding the roots
you would simply equate each term to

So y= x + 6 AND y= x - 8
0= x + 6 0= x - 8
x= -6 x= 8

: . x-intercepts are x= -6 & x= 8

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reserved seats for the football game cost $4.00 each and the general admission tickets for $3.00 each. after the game was over, it was found that 1787 total tickets were sold and $5792 was made. find the number of each sold

Solve the equation 40=5(d - 2)-2(x - 9)= -24

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