The rules which tell which calculations are done before others in an expression

Answers

Answer 1

Answer: BEDMAS

Brackets
exponents
division & multiplication }
addition & subtraction} -these 2 last ones can be done interchangably or from left to right

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Which algebraic expression is a polynomial?4x? - 3x + 2
6x2 + χ? - 5
8x2 + x
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Answers

$\text{A polynomial must have multiple terms in its expression}\n\n\text{That means we could eliminate the last answer choice automatically}\n\n\text{There are different types of polynomials, in which you could see that}\n\text{there is a trinomial in one of the answer choices}\n\n\text{Your best answer choice would be the 2nd one:}\,\,6x^2+x+5\n\n\text{This is because there are different terms and there are multiple of them}$

In which quadrants is the ordinate positive?

Answers

Answer:

Quadrants 1 and 2

Step-by-step explanation:

Answer:The first quadrant is positive

Step-by-step explanation:

Solve for q

- 3/4q = 12

q = ___

Answers

$\text{We know: } \n \boxed{(\ -3\ )/(\ 4\ )*q=12 } \n \n q=12: (\ -3\ )/(\ 4\ ) \n \n q=12* (\ 4\ )/(\ -3\ ) \n \n q= \frac{\ 48\ } {\ -3\ } \n \n q=-16 \n ********** \n \n \text{Check:}\n \n \boxed{ (-3)/(4)*-16=12 } \n \n (48)/(4) =12 \ TRUE$

$(-3)/(4q)=12$
Multiply by q to eliminate var in denominator
$( \not q*(3))/(4 \not q) =q*12$
$q= (-3)/(4) =q*12$
Common denominator is 4
$( \not 4(-3))/( \not 4) =4q*12$
$-3=4q*12$
$-3=48q$
Divide by 48
$q=( \not 3)/( \not 4 \not 8)$
$q=-16$
The answer is: $q=-16$

A ladybugs length measures 2 cm express this measurement in meters. explain your thinking. include an Equation with an exponent in your explanation

Answers

Answer:

Length of lady bug in meters is:

0.02

Step-by-step explanation:

A ladybugs length measures 2 cm.

We have to express this measurement in meters.

We know that 1 m=100 cm

1 cm= 1/100 m

=0.01 m

2 cm=2×0.01 m

=0.02 m

Hence, Length of lady bug in meters is:

0.02

The measurement $2\text{ centimetre}$ in meters is $\boxed{\bf 0.02\text{\bf\ metre}}$ .

Further explanation:

The centimetre and metre are the units of measurement to calculate the length of an object.

“Centi” is first introduced in metric system that means one hundredth of a unit.

Therefore, $1$ meter is $100\text{ cm}$ or we can say a centimetre is one-hundredth of a meter.

It can be mathematically expressed as follows:

$\boxed{1\text{ m}\rightarrow 100\text{ cm}}$

Procedure used:

Conversion from centimetre to metre.

1) First divide the unit (cm) by $100$ .

2) Now represent the resultant fraction into decimal form by moving the decimal two times to the left.

Given:

The length of ladybug is $2\text{ cm}$ .

Calculation:

Step 1:

The length of ladybug is $2\text{ cm}$ .

Use the above procedure to convert $2\text{ cm}$ into meters.

First divide the number $2$ by $100$ .

$\boxed{2\text{ cm}=(2)/(100)\text{ m}}$

Step 2:

Now follow the second step of the procedure.

The first digit on the right of decimal known as tenths or can say $(1)/(100)$ .

The second digit on the right of decimal known as hundredth or can say $(1)/(100)$ .

The resultant fraction $(2)/(100)$ can be convert into decimal form as follows:

$\boxed{(2)/(100)=0.02}$

Here, we shifted the decimal two times to the left in the digit $2$ .

Therefore, the unit of $2\text{ cm}$ in meters is $0.02\text{ m}$ .

Thus, the measurement $2\text{ centimetre}$ in meters is $\boxed{\bf 0.02\text{\bf\ metre}}$ .

Learn more:

1. Learn more about the representation of the graph brainly.com/question/2491745

2. Learn more about the graph of the quadratic function brainly.com/question/2334270

3. Learn more about graphed below of the function brainly.com/question/9590016

Answer details:

Grade: Junior school

Subject: Mathematics

Chapter: Units and measurement

Keywords: Measurement, unit, decimal, fractions, ones tens, tenth, hundredth, position, numbers, centimetres, meters, numbering system, denominator, conversion, rational number, whole numbers, left side, ladybug, length.

At a fundraiser, 8000 tickets are sold at $10 each for four prizes: a new car worth$30,000, a European vacation worth $9000, a home theater system worth $4000,

and a cash prize of $1000. You buy 1 ticket. What is the expected value of your

gain?

Answers

Final answer:

The expected value of buying one ticket in the fundraiser is calculated by multiplying the value of each prize by the probability of winning it and then summing the products. The expected value of a ticket is $5.5, which implies that an average gain or loss from buying a single ticket is $4.5 loss since each ticket cost $10.

Explanation:

The calculation of the expected value is straightforward and it involves multiplying the value of each possible outcome by its probability, and then adding these products together. So, let's start by identifying the outcomes:

Win a new car worth $30000 with a probability of 1 in 8000.
Win a vacation worth $9000 with a probability of 1 in 8000.
Win a home theater system worth $4000 with a probability of 1 in 8000.
Win a cash prize of $1000 with a probability of 1 in 8000.

Now we can calculate the expected amount you would get from buying 1 ticket:

(30000 * 1/8000) + (9000 * 1/8000) + (4000 * 1/8000) + (1000 * 1/8000) = $3.75 + $1.125 + $0.5 + $0.125 = $5.5

So the expected value of purchasing one ticket is $5.5. It's important to remember that this doesn't guarantee that you'll win because the actual result of buying one ticket is subject to chance.